On the stone-paved lanes of Songyang County that date back to ancient times,morning mist lingered as a faint fragrance of tea wafted from a century-old house.Inside,Yang Junjie,a tea maker born in the 1980s,worked def...On the stone-paved lanes of Songyang County that date back to ancient times,morning mist lingered as a faint fragrance of tea wafted from a century-old house.Inside,Yang Junjie,a tea maker born in the 1980s,worked deftly at the stove,his hands moving swiftly over the scorching iron wok as tender green tea leaves dance between his fingers.展开更多
Myanmar has a long teagrowing tradition,with 800,000 acres of plantations in both northern and southern Shan State.Its unspoiled environment offers a unique natural advantage,providing top-quality tea leaves for makin...Myanmar has a long teagrowing tradition,with 800,000 acres of plantations in both northern and southern Shan State.Its unspoiled environment offers a unique natural advantage,providing top-quality tea leaves for making premium milk tea.Yoke The’Myanmar Milk Tea,a signature product from Taw Win Kanbawza Mountain Company(Myanmar),is a flagship of the country’s tea culture and reflects its distinctive flavors and local charm.展开更多
Vine tea is documented in ancient Chinese books as having the function of promoting blood circulation.However,its effects and mechanisms remain unclear.The aim of this study was to comprehensively investigate the prot...Vine tea is documented in ancient Chinese books as having the function of promoting blood circulation.However,its effects and mechanisms remain unclear.The aim of this study was to comprehensively investigate the protective potential and mechanisms of vine tea in high-fat diet rat through a combination of in vivo and in vitro experiments.The efficacy of vine tea was evaluated using a high-fat diet rat model and an oxidized low-density lipoprotein-treated cell model,with physiological and biochemical indicators measured in rat serum and cell supernatants.Transcriptomics was utilized to investigate alterations mRNA expression following the administration of dihydromyricetin in cell model.Metabolomics and 16S rRNA sequencing was employed to examine changes in metabolites in the serum and changes in gut microbiota of high-fat diet rats after administering vine tea extract.Vine tea extract and dihydromyricetin can reduce elevated levels of lipids,including total cholesterol and triglycerides,following modeling.Transcriptomic data indicate that dihydromyricetin exerts its effects by regulating ferroptosis signaling pathways.Metabolomic analysis demonstrates that the administration of vine tea extract influences the vitamin K cycle and glutathione,thereby alleviating the progression of ferroptosis.Additionally,16S rRNA sequencing reveals that vine tea extract increases Lactobacillaceae in the gut microbiota,which subsequently affects the levels of lysophosphatidylcholine,a major phospholipid component of oxidized low-density lipoprotein in serum.Our results indicate that vine tea can regulate ferroptosis signaling pathways and increase Lactobacillaceae in the gut microbiota,thereby exhibiting cardiovascular protective effects in high-fat diet rats.展开更多
Understanding the molecular responses of tea leaves to mechanical stress is crucial for elucidating the mechanisms of post-harvest quality formation during oolong tea processing.This study employed an integrated multi...Understanding the molecular responses of tea leaves to mechanical stress is crucial for elucidating the mechanisms of post-harvest quality formation during oolong tea processing.This study employed an integrated multi-omics strategy to characterize the changes and interactions among metabolomic(MB),transcriptomic(TX),and proteomic(PT)profiles in mechanically stressed tea leaves.Mechanical stress initially activated damage-associated molecular patterns(DAMPs),including Ca^(2+)signaling,jasmonic acid signaling,and glutathione metabolism pathways.These processes subsequently induced quality-related metabolic pathways(QRMPs),particularly α-linolenic acid and phenylalanine metabolism.Upregulated expression of LOX,ADH1,and PAR genes,together with the increased abundance of their encoded proteins,respectively promoted the accumulation of jasmine lactone,benzyl alcohol,and 2-phenylethanol.These findings indicate that mechanical stress influences the metabolite biosynthesis in tea leaves through coordinated molecular responses.This study provides new insights into the molecular mechanisms underlying tea leaf responses to mechanical stress and a foundation for future investigations into how early molecular events may contribute to post-harvest metabolic changes during oolong tea processing.展开更多
Materials exhibiting broadband nonlinear optical responses are critically important for ultrafast photonics applications,particularly as saturable absorbers(SAs)that facilitate broadband optical pulse generation.In th...Materials exhibiting broadband nonlinear optical responses are critically important for ultrafast photonics applications,particularly as saturable absorbers(SAs)that facilitate broadband optical pulse generation.In this study,tea polyphenolpolyvinyl alcohol(TP-PVA)composite films are synthesized via a polymer embedding method and employed as SAs to initiate ultrafast pulse operation in fiber lasers.The TP-PVA SA film exhibits excellent broadband saturable absorption performance at wavelengths of 1.0μm,1.5μm,and 2.0μm,with modulation depths of 54.21%,41.41%,and 51.16%,respectively.Stable passively mode-locked pulses with pulse widths of 588 fs,419 fs,and 743 fs are generated in Yb-,Er-,and Tm-doped fiber lasers,respectively.This work confirms the effective performance of TP-PVA as a broadband SA,and establishes a foundation for the integration of novel and sustainable materials within ultrafast photonic systems.The approach paves the way for developing compact broadband ultrafast laser systems operating in the near-infrared spectral region.展开更多
Carbon dots(CDs),nanoscale carbon-based particles ubiquitously present in thermally processed foods such as toasted products,exhibit exceptional structural stability even after gastrointestinal digestion,a property th...Carbon dots(CDs),nanoscale carbon-based particles ubiquitously present in thermally processed foods such as toasted products,exhibit exceptional structural stability even after gastrointestinal digestion,a property that facilitates their systemic absorption and bioaccumulation.Their persistence in biological systems enables direct interactions with small bioactive molecules,potentially modulating the functional properties of dietary components.This study systematically evaluates the impact of CDs on the antioxidant efficacy of tea polyphenols(TPs),a class of natural antioxidants widely recognized for their health-promoting effects.The structure,antioxidant capacity,and in vitro cytological effects of the CDs-TPs complex were also investigated.Our results demonstrate that CDs and TPs form stable complexes mediated by non-covalent interactions,with hydrogen bonding identified as the dominant mechanism–specifically between the phenolic hydroxyl groups of TPs and fluorescent carbon-rich domains on CDs.These interactions induced a concentration-dependent enhancement in fluorescence intensity,with optimal binding efficiency observed at low CDs/TPs molar ratios(1:1 and 10:1).Structural analyses revealed that TP binding altered the tertiary conformation of CDs,exposing additional luminescent sites and modifying surface charge distribution.Transcriptomic profiling further demonstrated dose-dependent increases in differentially expressed genes under higher CDs/TPs ratios,which were predominantly enriched in oxidative stress response pathways.Mechanistic studies identified the FoxO signaling pathway as a central regulatory axis,with CDs-TPs complexes modulating the expression of antioxidant-related genes(e.g.,SOD2)and downstream effectors involved in redox homeostasis.These findings not only elucidate the structure-function interplay governing CDs-TPs interactions,but also highlight their dual role as modulators of antioxidant activity and potential therapeutic agents,establishing a foundation for developing CD-based composite materials in targeted antioxidant therapies.展开更多
Tea plant(Camellia sinensis(L.)O.Kuntze)is a cold-sensitive leaf-harvesting crop whose growth,yield,and processed tea quality are all inhibited by low temperatures.Therefore,identifying the regulatory genes involved i...Tea plant(Camellia sinensis(L.)O.Kuntze)is a cold-sensitive leaf-harvesting crop whose growth,yield,and processed tea quality are all inhibited by low temperatures.Therefore,identifying the regulatory genes involved in tea plant growth and freezing tolerance is crucial for genetic improvement.WRKY transcription factors regulate various plant processes,including growth and development,stress responses,and metabolite biosynthesis.However,the molecular network through which WRKY coordinates these pathways in tea plants remains unclear.In this study,we revealed that CsWRKY57L,a cold-inducible WRKY IIc subfamily member,positively regulated freezing tolerance by directly promoting flavonoid accumulation in tea plants.Transient suppression of CsWRKY57L weakened the freezing tolerance of tea plants by reducing flavonoid content and suppressing the C-repeat-binding factor(CBF)-cold-responsive(COR)gene pathway.In contrast,heterologous overexpression of CsWRKY57L in Arabidopsis had the opposite effect.Additionally,overexpression of CsWRKY57L inhibited reproductive development and accelerated senescence in Arabidopsis.Interaction analysis revealed that CsWRKY57L directly binds to the promoters of CsSWEET1a,CsSWEET15,and AtSWEET15,which encode sugar transporters essential for plant reproductive development,and inhibits their transcription.Overall,the study revealed a dual role of CsWRKY57L in promoting freezing tolerance via flavonoid biosynthesis and inhibiting reproductive development by regulating SWEETs expression.This study uncovers a novel mechanism whereby CsWRKY57L coordinately regulates both stress responses and growth in tea plants,providing a molecular basis for breeding low-temperature-tolerant varieties with restricted reproductive development.展开更多
The global incidence of breast cancer remains high and is increasing annually in some regions.Despite the variety of current treatments for breast cancer,the preventive and therapeutic effects are still limited due to...The global incidence of breast cancer remains high and is increasing annually in some regions.Despite the variety of current treatments for breast cancer,the preventive and therapeutic effects are still limited due to the highly heterogeneous nature and complex biological mechanisms of breast cancer.In recent years,tea consumption has emerged as a research focus due to its possible anti-cancer properties.Numerous preclinical studies have demonstrated that regular tea intake could potentially curb the progression of breast cancer by influencing various biological mechanisms,including signaling pathways,cell cycle regulation,and immune system responses,among others.Nonetheless,the findings from epidemiological studies show considerable variability,and the connection between tea drinking and both the risk and outlook for breast cancer is shaped by numerous elements.These include the specific type of tea consumed,the quantity consumed,individual genetic variations,and environmental influences.This article summarizes the current research findings and delves into the connection between tea consumption and the risk as well as the prognosis of breast cancer among different regional populations.Meanwhile,it expounds on the potential molecular biological mechanisms behind it.The aim is to offer a theoretical foundation for the personalized prevention and treatment of breast cancer.展开更多
In May 2025,the Fuding White Tea Culture System in southeast China’s Fujian Province was officially recognized by the UN Food and Agriculture Organization(FAO)as a Globally Important Agricultural Heritage System(GIAH...In May 2025,the Fuding White Tea Culture System in southeast China’s Fujian Province was officially recognized by the UN Food and Agriculture Organization(FAO)as a Globally Important Agricultural Heritage System(GIAHS).It mainly includes national-level superior varieties-Fuding Dabai Tea,Fuding Dahao Tea,and Fuding Cai Tea(group variety)which retains tradition and uses tea seeds for sexual reproduction-providing abundant germplasm resources for cultivating new tea varieties.展开更多
As the warm breeze sweeps over the peaks of the Himalayas,spring air fills the vast Qinghai-Xizang Plateau.Residents of Metok County,Nyingchi City,Xizang,are welcoming the"harvest season"busy picking tender ...As the warm breeze sweeps over the peaks of the Himalayas,spring air fills the vast Qinghai-Xizang Plateau.Residents of Metok County,Nyingchi City,Xizang,are welcoming the"harvest season"busy picking tender tea leaves and loquats.展开更多
Once a mining village,Jingshan in Hangzhou has reinvented itself over the past 20 years as a thriving model of green transformation.STROLLING through a village named Jingshan located in Hangzhou City,east China’s Zhe...Once a mining village,Jingshan in Hangzhou has reinvented itself over the past 20 years as a thriving model of green transformation.STROLLING through a village named Jingshan located in Hangzhou City,east China’s Zhejiang Province,one will notice the image of a“little tea farmer”wearing a bamboo hat and carrying a tea basket in many places.展开更多
Along the ancient Tea-Horse Road of thousands of miles between Sichuan and Xizang in Southwest China lies a centuries old courtyard.Commonly called the"Jiang Family Compound"or"Yu Xing Tea Store",t...Along the ancient Tea-Horse Road of thousands of miles between Sichuan and Xizang in Southwest China lies a centuries old courtyard.Commonly called the"Jiang Family Compound"or"Yu Xing Tea Store",this architecture situated in the old downtown area of Yingjing County in Ya'an City,Sichuan Province,was once the residence of the local tea merchants-the Jiang family.展开更多
[Objectives]To investigate the optimal preparation process for lemon-flavored solid instant tea.[Methods]The formulation process was optimized through a single-factor combined orthogonal test,utilizing large-leaf Pu&#...[Objectives]To investigate the optimal preparation process for lemon-flavored solid instant tea.[Methods]The formulation process was optimized through a single-factor combined orthogonal test,utilizing large-leaf Pu'er tea as the primary raw material and perfume lemon as the auxiliary ingredient.Sensory scores and the effectiveness of the spray drying process served as the key indicators for this investigation.[Results]The optimal formulation for lemon-flavored solid instant tea was established as follows:15 g of Pu'er tea,25 g of perfume lemon,a solid-liquid ratio of 1:20(g/mL),an extraction temperature of 90℃,an extraction duration of 30 min,and air inlet and outlet temperatures of 200℃and 80℃,respectively.This formulation produced the most favorable flavor profile for the perfume lemon-flavored solid instant tea,which was characterized by a stable texture and a sensory evaluation score of 91.97 points.[Conclusions]This study has the potential to enhance the development and utilization of large-leaf Pu'er tea and perfume lemon resources.展开更多
Based on the observation data of daily average temperature,daily rainfall and sunshine duration from 2005 to 2024 from the national basic meteorological station and regional meteorological station in Jingning,as well ...Based on the observation data of daily average temperature,daily rainfall and sunshine duration from 2005 to 2024 from the national basic meteorological station and regional meteorological station in Jingning,as well as the data of tea yield and growth period,the first picking date and quality of Huiming tea in Jingning were evaluated by the analysis of physical and chemical indicators and climate quality index of Huiming tea.The results show that in the past two decades,the first picking date of Huiming tea showed a significant advancing trend.Climate warming led to an increase in≥0℃active accumulated temperature,thus advancing the first picking date.The climate quality index of tea was"very excellent"in most years,and the physical and chemical indicators were at the special grade.Tea yield was significantly correlated with multiple meteorological factors,especially closely related to sunshine duration in early February and≥5℃active accumulated temperature from February to April.展开更多
Tea and herbal tea,as a combination of traditional medicine and modern health concepts,has been favored by more and more people due to its long-term efficacy and mechanism of action.Based on the introduction of the ba...Tea and herbal tea,as a combination of traditional medicine and modern health concepts,has been favored by more and more people due to its long-term efficacy and mechanism of action.Based on the introduction of the basic concept and development process of tea and medicinal tea,this article focuses on their health care functions and mechanisms,and analyzes the application effects of tea and medicinal tea in different diseases,to provide scientific basis and useful reference for their application and promotion in practice.展开更多
This study explores the reform and innovation of experimental and practical teaching for the Teochew Gongfu Tea course within the framework of intangible cultural heritage(ICH)education.Through the construction of a&q...This study explores the reform and innovation of experimental and practical teaching for the Teochew Gongfu Tea course within the framework of intangible cultural heritage(ICH)education.Through the construction of a"Three-Dimensional Synergy,Four-Competency Progression,and Five-Integration"model,the research aims to establish a comprehensive and sustainable system that integrates ICH inheritance,technical training,and innovation education.Drawing on Outcome-Based Education(OBE)and constructivism learning theory,the reform introduces multi-source collaboration,hybrid learning,and competence-oriented assessment mechanisms.Through case-based teaching and iterative feedback,the model effectively enhances students cultural cognition,technical proficiency,creative thinking,and professional development.The findings demonstrate that this model not only improves students practical performance and engagement but also deepens their understanding and appreciation of traditional culture,offering a replicable model for other ICH-related programs in higher education.展开更多
This paper focuses on the teaching of tea culture terminology translation against the backdrop of digital transformation in education.Based on the theory of pragmatic relevance,the research emphasizes shifting the foc...This paper focuses on the teaching of tea culture terminology translation against the backdrop of digital transformation in education.Based on the theory of pragmatic relevance,the research emphasizes shifting the focus of translation from static linguistic equivalence to more dynamic communicative effectiveness.This paper advocates the flexible application of various strategies.These include literal translation,free translation,transliteration with annotation,and adaptive translation based on the target audience’s cognitive context.The paper innovatively proposes digitally-enabled teaching implementation paths,including constructing modular online courses,building intelligent terminology case databases,conducting cloud-based workshops on translation,and implementing industry-academia collaborative project practices.These aim to reshape the teaching process utilizing digital technology,effectively cultivating higher vocational students’cultural communication abilities and practical translation skills,thereby providing high-quality language service talent support for the internationalization of Chinese tea culture.展开更多
The paper analyzes the English retranslation of The Classic on Tea from the perspective of cultural awareness and finds some misinterpretations and omissions of Chinese culture appeared in the translations of foreign ...The paper analyzes the English retranslation of The Classic on Tea from the perspective of cultural awareness and finds some misinterpretations and omissions of Chinese culture appeared in the translations of foreign scholars.Domestic translators have a deeper understanding of Chinese culture and their retranslations embody the increasing cultural awareness of the source language culture,mainly in seeking conceptual equivalence rather than lexical equivalence,choosing the most suitable translation according to the textual and cultural context,and focusing on cultural facsimile and readers’awareness.This study will help better spread the Chinese tea culture and help Chinese culture go global.展开更多
The main proteases(M^(pro)s)are hydrolases playing essential roles in the replication ofβ-coronaviruses including SARS-CoV-2.Herein,a highly efficient strategy was developed for discovering the M^(pro)inactivators fr...The main proteases(M^(pro)s)are hydrolases playing essential roles in the replication ofβ-coronaviruses including SARS-CoV-2.Herein,a highly efficient strategy was developed for discovering the M^(pro)inactivators from crude plant extract integrating target-based biochemical assay and chemoproteomic approaches.Firstly,Pu-erh tea was found to potently suppress SARS-CoV-2 M^(pro)in a time-dependent manner.Next,global chemical analysis coupling with peptide-modification profiling were used to identify the cysteine-modified constituents in Pu-erh tea.The results suggested that seven constituents in Pu-erh tea could modify SARSCoV-2 M^(pro),which turned out that epigallocatechin,gallocatechin and gallic acid were the most efficacious M^(pro)inactivators.Further investigations demonstrated that epigallocatechin and gallocatechin could inactivate S ARS-CoV-2 M^(pro)via blocking the formation of the homodimers.Collectively,this work proposed a novel and practical strategy for highly efficient discovery of time-dependent inhibitors of SARS-CoV-2 M^(pro)from plant extracts,while 3 constituents in Pu-erh tea have emerged as robust SARS-CoV-2 M^(pro)inactivators.展开更多
文摘On the stone-paved lanes of Songyang County that date back to ancient times,morning mist lingered as a faint fragrance of tea wafted from a century-old house.Inside,Yang Junjie,a tea maker born in the 1980s,worked deftly at the stove,his hands moving swiftly over the scorching iron wok as tender green tea leaves dance between his fingers.
文摘Myanmar has a long teagrowing tradition,with 800,000 acres of plantations in both northern and southern Shan State.Its unspoiled environment offers a unique natural advantage,providing top-quality tea leaves for making premium milk tea.Yoke The’Myanmar Milk Tea,a signature product from Taw Win Kanbawza Mountain Company(Myanmar),is a flagship of the country’s tea culture and reflects its distinctive flavors and local charm.
基金supported by Project of Zhangjiajie City’s Industry-Academia-Research Collaborative Innovation‘Open Project Leader’,Zhangjiajie City’s Project of Taking on Challenging Tasks by Responding to Calls for Solutions(JB20230530)Basic Research Funds Project for Central Universities of China(2023XCZX001,2020kfyXJJS120)Academician and Expert Workstations in Yunnan Province(202205AF150090).
文摘Vine tea is documented in ancient Chinese books as having the function of promoting blood circulation.However,its effects and mechanisms remain unclear.The aim of this study was to comprehensively investigate the protective potential and mechanisms of vine tea in high-fat diet rat through a combination of in vivo and in vitro experiments.The efficacy of vine tea was evaluated using a high-fat diet rat model and an oxidized low-density lipoprotein-treated cell model,with physiological and biochemical indicators measured in rat serum and cell supernatants.Transcriptomics was utilized to investigate alterations mRNA expression following the administration of dihydromyricetin in cell model.Metabolomics and 16S rRNA sequencing was employed to examine changes in metabolites in the serum and changes in gut microbiota of high-fat diet rats after administering vine tea extract.Vine tea extract and dihydromyricetin can reduce elevated levels of lipids,including total cholesterol and triglycerides,following modeling.Transcriptomic data indicate that dihydromyricetin exerts its effects by regulating ferroptosis signaling pathways.Metabolomic analysis demonstrates that the administration of vine tea extract influences the vitamin K cycle and glutathione,thereby alleviating the progression of ferroptosis.Additionally,16S rRNA sequencing reveals that vine tea extract increases Lactobacillaceae in the gut microbiota,which subsequently affects the levels of lysophosphatidylcholine,a major phospholipid component of oxidized low-density lipoprotein in serum.Our results indicate that vine tea can regulate ferroptosis signaling pathways and increase Lactobacillaceae in the gut microbiota,thereby exhibiting cardiovascular protective effects in high-fat diet rats.
基金supported by the National Key Research and Development Program of China(2022YFD2101101)the Earmarked Fund for CARS-19+2 种基金the National Natural Science Foundation of China(32402634)the Modern Agricultural(Tea)Industry Technology System of Fujian Province,China(2025 No.593)the Special Fund for Science and Technology Innovation of Fujian Zhang Tianfu Tea Development Foundation,China(FJZTF01)。
文摘Understanding the molecular responses of tea leaves to mechanical stress is crucial for elucidating the mechanisms of post-harvest quality formation during oolong tea processing.This study employed an integrated multi-omics strategy to characterize the changes and interactions among metabolomic(MB),transcriptomic(TX),and proteomic(PT)profiles in mechanically stressed tea leaves.Mechanical stress initially activated damage-associated molecular patterns(DAMPs),including Ca^(2+)signaling,jasmonic acid signaling,and glutathione metabolism pathways.These processes subsequently induced quality-related metabolic pathways(QRMPs),particularly α-linolenic acid and phenylalanine metabolism.Upregulated expression of LOX,ADH1,and PAR genes,together with the increased abundance of their encoded proteins,respectively promoted the accumulation of jasmine lactone,benzyl alcohol,and 2-phenylethanol.These findings indicate that mechanical stress influences the metabolite biosynthesis in tea leaves through coordinated molecular responses.This study provides new insights into the molecular mechanisms underlying tea leaf responses to mechanical stress and a foundation for future investigations into how early molecular events may contribute to post-harvest metabolic changes during oolong tea processing.
基金supported by the Opening Foundation of Hubei Key Laboratory for New Textile Materials and Applications Research(Grant No.FZXCL202410)the Key Project of Science and Technology Research Program of Hubei Provincial Department of Education,China(Grant No.D20231704)+1 种基金Wuhan Textile University(Grant No.523058)the Foundation of Wuhan Textile University(Grant No.K24058)。
文摘Materials exhibiting broadband nonlinear optical responses are critically important for ultrafast photonics applications,particularly as saturable absorbers(SAs)that facilitate broadband optical pulse generation.In this study,tea polyphenolpolyvinyl alcohol(TP-PVA)composite films are synthesized via a polymer embedding method and employed as SAs to initiate ultrafast pulse operation in fiber lasers.The TP-PVA SA film exhibits excellent broadband saturable absorption performance at wavelengths of 1.0μm,1.5μm,and 2.0μm,with modulation depths of 54.21%,41.41%,and 51.16%,respectively.Stable passively mode-locked pulses with pulse widths of 588 fs,419 fs,and 743 fs are generated in Yb-,Er-,and Tm-doped fiber lasers,respectively.This work confirms the effective performance of TP-PVA as a broadband SA,and establishes a foundation for the integration of novel and sustainable materials within ultrafast photonic systems.The approach paves the way for developing compact broadband ultrafast laser systems operating in the near-infrared spectral region.
基金supported by the National Key Research and Development Program of China(No.2024 YFD2401602)the National Natural Science Foundation of China(No.32302209)+4 种基金the Natural Science Foundation of Zhejiang Province(No.LQ24C200001)the Young Science and Technology Innovation Leading Talents of Ningbo City(No.2023QL038)the Natural Science Foundation of Ningbo(No.2023J104)the Zhejiang Provincial Department of Education General Project(Nos.Y202248913,Y202248913)the General Project of Education Department of Zhejiang Province(No.Y202353405)。
文摘Carbon dots(CDs),nanoscale carbon-based particles ubiquitously present in thermally processed foods such as toasted products,exhibit exceptional structural stability even after gastrointestinal digestion,a property that facilitates their systemic absorption and bioaccumulation.Their persistence in biological systems enables direct interactions with small bioactive molecules,potentially modulating the functional properties of dietary components.This study systematically evaluates the impact of CDs on the antioxidant efficacy of tea polyphenols(TPs),a class of natural antioxidants widely recognized for their health-promoting effects.The structure,antioxidant capacity,and in vitro cytological effects of the CDs-TPs complex were also investigated.Our results demonstrate that CDs and TPs form stable complexes mediated by non-covalent interactions,with hydrogen bonding identified as the dominant mechanism–specifically between the phenolic hydroxyl groups of TPs and fluorescent carbon-rich domains on CDs.These interactions induced a concentration-dependent enhancement in fluorescence intensity,with optimal binding efficiency observed at low CDs/TPs molar ratios(1:1 and 10:1).Structural analyses revealed that TP binding altered the tertiary conformation of CDs,exposing additional luminescent sites and modifying surface charge distribution.Transcriptomic profiling further demonstrated dose-dependent increases in differentially expressed genes under higher CDs/TPs ratios,which were predominantly enriched in oxidative stress response pathways.Mechanistic studies identified the FoxO signaling pathway as a central regulatory axis,with CDs-TPs complexes modulating the expression of antioxidant-related genes(e.g.,SOD2)and downstream effectors involved in redox homeostasis.These findings not only elucidate the structure-function interplay governing CDs-TPs interactions,but also highlight their dual role as modulators of antioxidant activity and potential therapeutic agents,establishing a foundation for developing CD-based composite materials in targeted antioxidant therapies.
基金supported by the National Natural Science Foundation of China(Grant Nos.32072630,32372774,and U22A20499)the earmarked fund for CARS(Grant No.CARS-19-01A).
文摘Tea plant(Camellia sinensis(L.)O.Kuntze)is a cold-sensitive leaf-harvesting crop whose growth,yield,and processed tea quality are all inhibited by low temperatures.Therefore,identifying the regulatory genes involved in tea plant growth and freezing tolerance is crucial for genetic improvement.WRKY transcription factors regulate various plant processes,including growth and development,stress responses,and metabolite biosynthesis.However,the molecular network through which WRKY coordinates these pathways in tea plants remains unclear.In this study,we revealed that CsWRKY57L,a cold-inducible WRKY IIc subfamily member,positively regulated freezing tolerance by directly promoting flavonoid accumulation in tea plants.Transient suppression of CsWRKY57L weakened the freezing tolerance of tea plants by reducing flavonoid content and suppressing the C-repeat-binding factor(CBF)-cold-responsive(COR)gene pathway.In contrast,heterologous overexpression of CsWRKY57L in Arabidopsis had the opposite effect.Additionally,overexpression of CsWRKY57L inhibited reproductive development and accelerated senescence in Arabidopsis.Interaction analysis revealed that CsWRKY57L directly binds to the promoters of CsSWEET1a,CsSWEET15,and AtSWEET15,which encode sugar transporters essential for plant reproductive development,and inhibits their transcription.Overall,the study revealed a dual role of CsWRKY57L in promoting freezing tolerance via flavonoid biosynthesis and inhibiting reproductive development by regulating SWEETs expression.This study uncovers a novel mechanism whereby CsWRKY57L coordinately regulates both stress responses and growth in tea plants,providing a molecular basis for breeding low-temperature-tolerant varieties with restricted reproductive development.
文摘The global incidence of breast cancer remains high and is increasing annually in some regions.Despite the variety of current treatments for breast cancer,the preventive and therapeutic effects are still limited due to the highly heterogeneous nature and complex biological mechanisms of breast cancer.In recent years,tea consumption has emerged as a research focus due to its possible anti-cancer properties.Numerous preclinical studies have demonstrated that regular tea intake could potentially curb the progression of breast cancer by influencing various biological mechanisms,including signaling pathways,cell cycle regulation,and immune system responses,among others.Nonetheless,the findings from epidemiological studies show considerable variability,and the connection between tea drinking and both the risk and outlook for breast cancer is shaped by numerous elements.These include the specific type of tea consumed,the quantity consumed,individual genetic variations,and environmental influences.This article summarizes the current research findings and delves into the connection between tea consumption and the risk as well as the prognosis of breast cancer among different regional populations.Meanwhile,it expounds on the potential molecular biological mechanisms behind it.The aim is to offer a theoretical foundation for the personalized prevention and treatment of breast cancer.
文摘In May 2025,the Fuding White Tea Culture System in southeast China’s Fujian Province was officially recognized by the UN Food and Agriculture Organization(FAO)as a Globally Important Agricultural Heritage System(GIAHS).It mainly includes national-level superior varieties-Fuding Dabai Tea,Fuding Dahao Tea,and Fuding Cai Tea(group variety)which retains tradition and uses tea seeds for sexual reproduction-providing abundant germplasm resources for cultivating new tea varieties.
文摘As the warm breeze sweeps over the peaks of the Himalayas,spring air fills the vast Qinghai-Xizang Plateau.Residents of Metok County,Nyingchi City,Xizang,are welcoming the"harvest season"busy picking tender tea leaves and loquats.
文摘Once a mining village,Jingshan in Hangzhou has reinvented itself over the past 20 years as a thriving model of green transformation.STROLLING through a village named Jingshan located in Hangzhou City,east China’s Zhejiang Province,one will notice the image of a“little tea farmer”wearing a bamboo hat and carrying a tea basket in many places.
文摘Along the ancient Tea-Horse Road of thousands of miles between Sichuan and Xizang in Southwest China lies a centuries old courtyard.Commonly called the"Jiang Family Compound"or"Yu Xing Tea Store",this architecture situated in the old downtown area of Yingjing County in Ya'an City,Sichuan Province,was once the residence of the local tea merchants-the Jiang family.
基金Supported by Basic Research Special Project of Yunnan Provincial Department of Science and Technology(202401AT070216)Scientific Research Fund of Yunnan Provincial Department of Education(2024J0512).
文摘[Objectives]To investigate the optimal preparation process for lemon-flavored solid instant tea.[Methods]The formulation process was optimized through a single-factor combined orthogonal test,utilizing large-leaf Pu'er tea as the primary raw material and perfume lemon as the auxiliary ingredient.Sensory scores and the effectiveness of the spray drying process served as the key indicators for this investigation.[Results]The optimal formulation for lemon-flavored solid instant tea was established as follows:15 g of Pu'er tea,25 g of perfume lemon,a solid-liquid ratio of 1:20(g/mL),an extraction temperature of 90℃,an extraction duration of 30 min,and air inlet and outlet temperatures of 200℃and 80℃,respectively.This formulation produced the most favorable flavor profile for the perfume lemon-flavored solid instant tea,which was characterized by a stable texture and a sensory evaluation score of 91.97 points.[Conclusions]This study has the potential to enhance the development and utilization of large-leaf Pu'er tea and perfume lemon resources.
基金Supported by the Science and Technology Planning Project of Jingning County(2024C1)General Project of Meteorological Science and Technology in Lishui City in 2024(202401YB).
文摘Based on the observation data of daily average temperature,daily rainfall and sunshine duration from 2005 to 2024 from the national basic meteorological station and regional meteorological station in Jingning,as well as the data of tea yield and growth period,the first picking date and quality of Huiming tea in Jingning were evaluated by the analysis of physical and chemical indicators and climate quality index of Huiming tea.The results show that in the past two decades,the first picking date of Huiming tea showed a significant advancing trend.Climate warming led to an increase in≥0℃active accumulated temperature,thus advancing the first picking date.The climate quality index of tea was"very excellent"in most years,and the physical and chemical indicators were at the special grade.Tea yield was significantly correlated with multiple meteorological factors,especially closely related to sunshine duration in early February and≥5℃active accumulated temperature from February to April.
基金Research on Characteristics and Rules of Folk Characteristic Medicinal Tea in Hetian area,University Level Key Project of Natural Science(Project No.:2024ZR-005)。
文摘Tea and herbal tea,as a combination of traditional medicine and modern health concepts,has been favored by more and more people due to its long-term efficacy and mechanism of action.Based on the introduction of the basic concept and development process of tea and medicinal tea,this article focuses on their health care functions and mechanisms,and analyzes the application effects of tea and medicinal tea in different diseases,to provide scientific basis and useful reference for their application and promotion in practice.
文摘This study explores the reform and innovation of experimental and practical teaching for the Teochew Gongfu Tea course within the framework of intangible cultural heritage(ICH)education.Through the construction of a"Three-Dimensional Synergy,Four-Competency Progression,and Five-Integration"model,the research aims to establish a comprehensive and sustainable system that integrates ICH inheritance,technical training,and innovation education.Drawing on Outcome-Based Education(OBE)and constructivism learning theory,the reform introduces multi-source collaboration,hybrid learning,and competence-oriented assessment mechanisms.Through case-based teaching and iterative feedback,the model effectively enhances students cultural cognition,technical proficiency,creative thinking,and professional development.The findings demonstrate that this model not only improves students practical performance and engagement but also deepens their understanding and appreciation of traditional culture,offering a replicable model for other ICH-related programs in higher education.
基金Special Project of Higher Education in the 2023,Educational Science Planning Project of the Leading Group Office of the Guangdong Provincial Educational Science Planning,“Research on the New Forms of Foreign Language Teaching in Guangdong Higher Vocational Colleges under the Background of Education Digitization”(Project No.:2023GXJK1052)。
文摘This paper focuses on the teaching of tea culture terminology translation against the backdrop of digital transformation in education.Based on the theory of pragmatic relevance,the research emphasizes shifting the focus of translation from static linguistic equivalence to more dynamic communicative effectiveness.This paper advocates the flexible application of various strategies.These include literal translation,free translation,transliteration with annotation,and adaptive translation based on the target audience’s cognitive context.The paper innovatively proposes digitally-enabled teaching implementation paths,including constructing modular online courses,building intelligent terminology case databases,conducting cloud-based workshops on translation,and implementing industry-academia collaborative project practices.These aim to reshape the teaching process utilizing digital technology,effectively cultivating higher vocational students’cultural communication abilities and practical translation skills,thereby providing high-quality language service talent support for the internationalization of Chinese tea culture.
基金USST Construction Project of English-taught Courses for International Students in 2024Key Course Construction Project in Universities of Shanghai in 2024USST Teaching Achievement Award(postgraduate)Cultivation Project in 2024.
文摘The paper analyzes the English retranslation of The Classic on Tea from the perspective of cultural awareness and finds some misinterpretations and omissions of Chinese culture appeared in the translations of foreign scholars.Domestic translators have a deeper understanding of Chinese culture and their retranslations embody the increasing cultural awareness of the source language culture,mainly in seeking conceptual equivalence rather than lexical equivalence,choosing the most suitable translation according to the textual and cultural context,and focusing on cultural facsimile and readers’awareness.This study will help better spread the Chinese tea culture and help Chinese culture go global.
基金the supporting of Shanghai Science and Technology Innovation Action Plans(21S21900600,20S21901500,20S21900900)supported by Shanghai Science and Technology Committee+5 种基金the NSF of China(82273897,81922070,81973286,82104281,82173798)the Innovation Team and Talents Cultivation Program of National Administration of Traditional Chinese Medicine(ZYYCXTDD-202004)the Three-year Action Plan for Shanghai TCM Development and Inheritance Program(ZY(2021-2023)-0401)Shanghai Municipal Health Commission’s TCM Research Project(2022CX005)Shanghai Municipal Science and Technology Major Project(ZD2021CY001)Excellent Doctoral Student Cultivation Projects in Key Fields(GJ2022012)。
文摘The main proteases(M^(pro)s)are hydrolases playing essential roles in the replication ofβ-coronaviruses including SARS-CoV-2.Herein,a highly efficient strategy was developed for discovering the M^(pro)inactivators from crude plant extract integrating target-based biochemical assay and chemoproteomic approaches.Firstly,Pu-erh tea was found to potently suppress SARS-CoV-2 M^(pro)in a time-dependent manner.Next,global chemical analysis coupling with peptide-modification profiling were used to identify the cysteine-modified constituents in Pu-erh tea.The results suggested that seven constituents in Pu-erh tea could modify SARSCoV-2 M^(pro),which turned out that epigallocatechin,gallocatechin and gallic acid were the most efficacious M^(pro)inactivators.Further investigations demonstrated that epigallocatechin and gallocatechin could inactivate S ARS-CoV-2 M^(pro)via blocking the formation of the homodimers.Collectively,this work proposed a novel and practical strategy for highly efficient discovery of time-dependent inhibitors of SARS-CoV-2 M^(pro)from plant extracts,while 3 constituents in Pu-erh tea have emerged as robust SARS-CoV-2 M^(pro)inactivators.
