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
An old stage,especially for traditional opera performances,stands in Jinglou,a town in Zhangshu,administered by Yichun,a city in East China's Jiangxi Province.Tea-picking opera-a performance genre,developed from f...An old stage,especially for traditional opera performances,stands in Jinglou,a town in Zhangshu,administered by Yichun,a city in East China's Jiangxi Province.Tea-picking opera-a performance genre,developed from folk dances and songs,and which depicts people’'s daily lives-is often performed on that stage,in the evening,by a troupe organized by Bai Genbao's family.The Bais including Bai Genbao's parents,wife and eldest daughter,have inherited and helped promote this performance art derived from tea gardens,for three generations.展开更多
Red honeybush tea(RHT)is a tea product developed from Cyclopia spp.which is endemic to South Africa.Aside refreshment,RHT has over the years been used traditionally in the treatment of various diseases including type ...Red honeybush tea(RHT)is a tea product developed from Cyclopia spp.which is endemic to South Africa.Aside refreshment,RHT has over the years been used traditionally in the treatment of various diseases including type 2 diabetes.This study investigated the in vivo antioxidant and anti-diabetic activity of RHT concentrated hot water extract in type 2 diabetes(T2D)model of rats.T2D was induced starting with feeding 10%fructose solution ad libitum for 2 weeks followed by a single intraperitoneal injection of streptozotocin(40 mg/kg body weight(BW)).Five weeks of treatment of RHT led to significant(P<0.05)elevation in serum insulin,pancreaticβ-cell function,HDL-C levels with concomitant decrease in AST,ALT,ALP,urea,CK-MB,fructosamine,total cholesterol,triglycerides,LDL-C,and insulin resistance in diabetic rats.RHT also signifi cantly(P<0.05)decreased MDA levels and enhanced level of GSH,activity of SOD,catalase,GR in most of organs(pancreas,liver,kidneys,and heart).Signifi cantly(P<0.05)improved morphological changes in the islets andβ-cells were observed in rats treated with RHT.The data of this study suggest that RHT demonstrates an outstanding antioxidant and anti-diabetic effects in STZ-induced T2D model of rats.展开更多
Cyclopia is a rare congenital brain malformation frequently associated with facial anomalies. It is characterized by the presence of a single eye with varying degrees of doubling of the intrinsic ocular structures loc...Cyclopia is a rare congenital brain malformation frequently associated with facial anomalies. It is characterized by the presence of a single eye with varying degrees of doubling of the intrinsic ocular structures located in the middle of the face. It is the most severe facial expression of holoprosencephaly. Its aetiology is still poorly understood, but several factors could play a role in its occurrence, including certain viruses contracted during pregnancy. Obstetrical ultrasound has made antenatal diagnosis and the search for associated malformations possible. This diagnosis must be made antenatally because the prognosis is poor, hence the decision to terminate the pregnancy. We report a case of cyclopia associated with ambiguity of the external genitalia, discovered intraoperatively in a patient with poor prenatal follow-up, in whom a coronavirus infection (COVID-19) had been diagnosed in early pregnancy.展开更多
Pyrrolizidine alkaloids(PAs)and their N-oxides(PANOs)are phytotoxins produced by various plant species and have been emerged as environmental pollutants.The sorption/desorption behaviors of PAs/PANOs in soil are cruci...Pyrrolizidine alkaloids(PAs)and their N-oxides(PANOs)are phytotoxins produced by various plant species and have been emerged as environmental pollutants.The sorption/desorption behaviors of PAs/PANOs in soil are crucial due to the horizontal transfer of these natural products from PA-producing plants to soil and subsequently absorbed by plant roots.This study firstly investigated the sorption/desorption behaviors of PAs/PANOs in tea plantation soils with distinct characteristics.Sorption amounts for seneciphylline(Sp)and seneciphylline-N-oxide(SpNO)in three acidic soils ranged from 2.9 to 5.9μg/g and 1.7 to 2.8μg/g,respectively.Desorption percentages for Sp and SpNO were from 22.2%to 30.5%and 36.1%to 43.9%.In the mixed PAs/PANOs systems,stronger sorption of PAs over PANOs was occurred in tested soils.Additionally,the Freundlich models more precisely described the sorption/desorption isotherms.Cation exchange capacity,sand content and total nitrogen were identified as major influencing factors by linear regression models.Overall,the soils exhibiting higher sorption capacities for compounds with greater hydrophobicity.PANOs were more likely to migrate within soils and be absorbed by tea plants.It contributes to the understanding of environmental fate of PAs/PANOs in tea plantations and provides basic data and clues for the development of PAs/PANOs reduction technology.展开更多
Transcutaneous electrical acupoint stimulation(TEAS)is a kind of physical therapy that use electric cur-rent through the electrodes placed on the surface of acupoints to produce clinical effects in the human body,whic...Transcutaneous electrical acupoint stimulation(TEAS)is a kind of physical therapy that use electric cur-rent through the electrodes placed on the surface of acupoints to produce clinical effects in the human body,which is characterized by less adverse reaction and convenient operation.It has been widely used in the treatment of various diseases.This review introduces six major clinical applications of TEAS,named analgesia,regulation of gastrointestinal function,improvement of reproductive function,enhancement of cognitive function,promotion of limb function recovery and relief of fatigue.Besides,TEAS has been ap-plied to the treatment of other chronic diseases such as hypertension and diabetes,achieving satisfactory clinical effects.However,two crucial challenges are encountered in the development of TEAS.One is the lack of standardization in the selection of parameters such as waveform,frequency,intensity and stimula-tion duration.The other is the limitation on the flexibility in the acupoint selection.This review analyzes key issues that need to be addressed in the current clinical application of TEAS,such as the selection of parameters and acupoints,and this review provides a certain reference value for optimizing regimens of TEAS and promoting its development and application.展开更多
Background:Ampelopsis grossedentata,vine tea,which is the tea alternative beverages in China.In vine tea processing,a large amount of broken tea is produced,which has low commercial value.Methods:This study investigat...Background:Ampelopsis grossedentata,vine tea,which is the tea alternative beverages in China.In vine tea processing,a large amount of broken tea is produced,which has low commercial value.Methods:This study investigates the influence of different extraction methods(room temperature water extraction,boiling water extraction,ultrasonic-assisted room temperature water extraction,and ultrasonic-assisted boiling water extraction,referred to as room temperature water extraction(RE),boiling water extraction(BE),ultrasonic assistance at room temperature water extraction(URE),and ultrasonic assistance in boiling water extraction(UBE))on the yield,dihydromyricetin(DMY)content,free amino acid composition,volatile aroma components,and antioxidant properties of vine tea extracts.Results:A notable influence of extraction temperature on the yield of vine tea extracts(P<0.05),with BE yielding the highest at 43.13±0.26%,higher than that of RE(34.29±0.81%).Ultrasound-assisted extraction significantly increased the DMY content of the extracts(P<0.05),whereas DMY content in the RE extracts was 59.94±1.70%,that of URE reached 66.14±2.78%.Analysis revealed 17 amino acids,with L-serine and aspartic acid being the most abundant in the extracts,nevertheless ultrasound-assisted extraction reduced total free amino acid content.Gas chromatography-mass spectrometry analysis demonstrated an increase in the diversity and quantity of compounds in the vine tea water extracts obtained through ultrasonic-assisted extraction.Specifically,69 and 68 volatile compounds were found in URE and UBE extracts,which were higher than the number found in RE and BE extracts.In vitro,antioxidant activity assessments revealed varying antioxidant capacities among different extraction methods,with RE exhibiting the highest DPPH scavenging rate,URE leading in ABTS•+free radical scavenging,and BE demonstrating superior ferric ion reducing antioxidant activity.Conclusion:The findings suggest that extraction methods significantly influence the chemical composition and antioxidant properties of vine tea extracts.Ultrasonic-assisted extraction proved instrumental in elevating the DMY content in vine tea extracts,thereby enriching its flavor profile while maintaining its antioxidant properties.展开更多
A rare sesquiterpene of hawkteasesquioid A(1),featuring a novel 5/6/5 tricyclic system containing a 6,5-spiroketal motif,was isolated from the bark of Litsea coreana Lévl.var.lanuginosa(hawk tea).The structure of...A rare sesquiterpene of hawkteasesquioid A(1),featuring a novel 5/6/5 tricyclic system containing a 6,5-spiroketal motif,was isolated from the bark of Litsea coreana Lévl.var.lanuginosa(hawk tea).The structure of this compound was elucidated based on the high-resolution electrospray ionization mass spectrometry(HRESIMS),one-dimensional(1D)and two-dimensional(2D)nuclear magnetic resonance(NMR)spectroscopy,and single-crystal X-ray diffraction data.The cytotoxicity of this compound was assessed on the A549,HT-29,and SW1990 cell lines.展开更多
Hibiscus sabdarrifa flowers are known the world over. In Cote d’Ivoire, they are commonly known as “bissap” and are of great interest to local people, who use them to make an eponymous herbal tea. This drink has po...Hibiscus sabdarrifa flowers are known the world over. In Cote d’Ivoire, they are commonly known as “bissap” and are of great interest to local people, who use them to make an eponymous herbal tea. This drink has potential medicinal and nutritional value (Khan et al., 2022). Nine (9) samples of dried flowers of the plant, packaged in 3 g sachets of a local Kuinafo brand, were used for physico-chemical analyses. Heavy metals, mineral salts, ash and moisture content were determined using methods adapted from the Association of Official Analytical Chemists (AOAC). The results showed the presence of heavy metals at levels whose intake should take into account the weight of the consumer in the case of mercury and arsenic (0.5 mg/Kg and 0.7 mg/Kg respectively). Apart from lead, whose level was not compliant (1.310 mg/Kg for a CSHPF standard of 0.5 mg/Kg), cadmium had a regulatory level (0.18 mg/Kg for a CSHPF standard of 0.20 mg/Kg). Nutrient intakes were significant (calcium, iron and potassium respectively at 1.79 g/100g;17.27 mg/100g and 1.76 g/100g of dried Hibiscus sabdarrifa flowers) and the moisture content suggested that the dried flowers were better preserved. The study of the physico-chemical characteristics of Hibiscus sabdarrifa flowers has enabled us to highlight the importance of quality control and the need to prevent any adverse effects on consumer health.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
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
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
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
[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
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
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
Based on the requirements of local high-quality economic development and addressing the critical task of transformation and upgrading in the tea industry,this paper systematically discusses the necessity and feasibili...Based on the requirements of local high-quality economic development and addressing the critical task of transformation and upgrading in the tea industry,this paper systematically discusses the necessity and feasibility of constructing an optimal industrialization operation system driven by the dual wheels of"branding+standardization".The article first clarifies the connotation of high-quality development and the synergistic mechanism between branding and standardization.It then analyzes the current situation and bottlenecks of China's tea industry development.Subsequently,it proposes a dual-wheel drive strategy where branding enhances value and standardization guarantees quality,and designs a systematic implementation plan involving industrial chain synergy optimization and integrated support from government,industry,academia,research,and application.On this basis,strategies and suggestions are proposed,encompassing the starting point,standard focal points,key effort areas,innovation points,and target achievement points.The aim is to promote the tea industry to break through homogeneous competition,achieve value ascent,and provide important industrial support for regional high-quality development through the construction of the aforementioned system.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An old stage,especially for traditional opera performances,stands in Jinglou,a town in Zhangshu,administered by Yichun,a city in East China's Jiangxi Province.Tea-picking opera-a performance genre,developed from folk dances and songs,and which depicts people’'s daily lives-is often performed on that stage,in the evening,by a troupe organized by Bai Genbao's family.The Bais including Bai Genbao's parents,wife and eldest daughter,have inherited and helped promote this performance art derived from tea gardens,for three generations.
基金supported by a competitive research grant from the Research Office,University of KwaZulu-Natal(UKZN),Durbanan incentive grant for rated researchers and a grant support for women and young researchers from the National Research Foundation(NRF),Pretoria,South Africa.
文摘Red honeybush tea(RHT)is a tea product developed from Cyclopia spp.which is endemic to South Africa.Aside refreshment,RHT has over the years been used traditionally in the treatment of various diseases including type 2 diabetes.This study investigated the in vivo antioxidant and anti-diabetic activity of RHT concentrated hot water extract in type 2 diabetes(T2D)model of rats.T2D was induced starting with feeding 10%fructose solution ad libitum for 2 weeks followed by a single intraperitoneal injection of streptozotocin(40 mg/kg body weight(BW)).Five weeks of treatment of RHT led to significant(P<0.05)elevation in serum insulin,pancreaticβ-cell function,HDL-C levels with concomitant decrease in AST,ALT,ALP,urea,CK-MB,fructosamine,total cholesterol,triglycerides,LDL-C,and insulin resistance in diabetic rats.RHT also signifi cantly(P<0.05)decreased MDA levels and enhanced level of GSH,activity of SOD,catalase,GR in most of organs(pancreas,liver,kidneys,and heart).Signifi cantly(P<0.05)improved morphological changes in the islets andβ-cells were observed in rats treated with RHT.The data of this study suggest that RHT demonstrates an outstanding antioxidant and anti-diabetic effects in STZ-induced T2D model of rats.
文摘Cyclopia is a rare congenital brain malformation frequently associated with facial anomalies. It is characterized by the presence of a single eye with varying degrees of doubling of the intrinsic ocular structures located in the middle of the face. It is the most severe facial expression of holoprosencephaly. Its aetiology is still poorly understood, but several factors could play a role in its occurrence, including certain viruses contracted during pregnancy. Obstetrical ultrasound has made antenatal diagnosis and the search for associated malformations possible. This diagnosis must be made antenatally because the prognosis is poor, hence the decision to terminate the pregnancy. We report a case of cyclopia associated with ambiguity of the external genitalia, discovered intraoperatively in a patient with poor prenatal follow-up, in whom a coronavirus infection (COVID-19) had been diagnosed in early pregnancy.
基金supported by the earmarked fund for the Modern Agro-Industry Technology Research System (No.CARS-19)the Innovative Research Team in Chinese Academy of Agricultural Sciences (No.CAAS ASTIP-2014-TRICAAS).
文摘Pyrrolizidine alkaloids(PAs)and their N-oxides(PANOs)are phytotoxins produced by various plant species and have been emerged as environmental pollutants.The sorption/desorption behaviors of PAs/PANOs in soil are crucial due to the horizontal transfer of these natural products from PA-producing plants to soil and subsequently absorbed by plant roots.This study firstly investigated the sorption/desorption behaviors of PAs/PANOs in tea plantation soils with distinct characteristics.Sorption amounts for seneciphylline(Sp)and seneciphylline-N-oxide(SpNO)in three acidic soils ranged from 2.9 to 5.9μg/g and 1.7 to 2.8μg/g,respectively.Desorption percentages for Sp and SpNO were from 22.2%to 30.5%and 36.1%to 43.9%.In the mixed PAs/PANOs systems,stronger sorption of PAs over PANOs was occurred in tested soils.Additionally,the Freundlich models more precisely described the sorption/desorption isotherms.Cation exchange capacity,sand content and total nitrogen were identified as major influencing factors by linear regression models.Overall,the soils exhibiting higher sorption capacities for compounds with greater hydrophobicity.PANOs were more likely to migrate within soils and be absorbed by tea plants.It contributes to the understanding of environmental fate of PAs/PANOs in tea plantations and provides basic data and clues for the development of PAs/PANOs reduction technology.
基金Supported by Shanghai 2020“Science and Technology Innovation Action Plan”Medical Innovation Research Special Program:20Y21902800Shanghai Municipal Health Commission Shanghai Three-Year Action Plan to Further Accelerate the Development of Traditional Chinese Medicine Inheritance and Innovation:ZY(2021-2023)−0302)+1 种基金Shanghai Key Specialty(Acupuncture)Construction Project:shslczdzk04701Shanghai 2024"Science and Technology Innovation Action Plan"star cultivation(Sail special):24YF2740600.
文摘Transcutaneous electrical acupoint stimulation(TEAS)is a kind of physical therapy that use electric cur-rent through the electrodes placed on the surface of acupoints to produce clinical effects in the human body,which is characterized by less adverse reaction and convenient operation.It has been widely used in the treatment of various diseases.This review introduces six major clinical applications of TEAS,named analgesia,regulation of gastrointestinal function,improvement of reproductive function,enhancement of cognitive function,promotion of limb function recovery and relief of fatigue.Besides,TEAS has been ap-plied to the treatment of other chronic diseases such as hypertension and diabetes,achieving satisfactory clinical effects.However,two crucial challenges are encountered in the development of TEAS.One is the lack of standardization in the selection of parameters such as waveform,frequency,intensity and stimula-tion duration.The other is the limitation on the flexibility in the acupoint selection.This review analyzes key issues that need to be addressed in the current clinical application of TEAS,such as the selection of parameters and acupoints,and this review provides a certain reference value for optimizing regimens of TEAS and promoting its development and application.
基金supported by the Key Research and Development Program of Hunan Province of China(No.2022NK2036)Xiangxi Prefecture Science and Technology Plan Project"School-Local Integration"Special Project(No.2022001)the scientific research project of Hunan Provincial Department of Education(No.22B0520).
文摘Background:Ampelopsis grossedentata,vine tea,which is the tea alternative beverages in China.In vine tea processing,a large amount of broken tea is produced,which has low commercial value.Methods:This study investigates the influence of different extraction methods(room temperature water extraction,boiling water extraction,ultrasonic-assisted room temperature water extraction,and ultrasonic-assisted boiling water extraction,referred to as room temperature water extraction(RE),boiling water extraction(BE),ultrasonic assistance at room temperature water extraction(URE),and ultrasonic assistance in boiling water extraction(UBE))on the yield,dihydromyricetin(DMY)content,free amino acid composition,volatile aroma components,and antioxidant properties of vine tea extracts.Results:A notable influence of extraction temperature on the yield of vine tea extracts(P<0.05),with BE yielding the highest at 43.13±0.26%,higher than that of RE(34.29±0.81%).Ultrasound-assisted extraction significantly increased the DMY content of the extracts(P<0.05),whereas DMY content in the RE extracts was 59.94±1.70%,that of URE reached 66.14±2.78%.Analysis revealed 17 amino acids,with L-serine and aspartic acid being the most abundant in the extracts,nevertheless ultrasound-assisted extraction reduced total free amino acid content.Gas chromatography-mass spectrometry analysis demonstrated an increase in the diversity and quantity of compounds in the vine tea water extracts obtained through ultrasonic-assisted extraction.Specifically,69 and 68 volatile compounds were found in URE and UBE extracts,which were higher than the number found in RE and BE extracts.In vitro,antioxidant activity assessments revealed varying antioxidant capacities among different extraction methods,with RE exhibiting the highest DPPH scavenging rate,URE leading in ABTS•+free radical scavenging,and BE demonstrating superior ferric ion reducing antioxidant activity.Conclusion:The findings suggest that extraction methods significantly influence the chemical composition and antioxidant properties of vine tea extracts.Ultrasonic-assisted extraction proved instrumental in elevating the DMY content in vine tea extracts,thereby enriching its flavor profile while maintaining its antioxidant properties.
文摘A rare sesquiterpene of hawkteasesquioid A(1),featuring a novel 5/6/5 tricyclic system containing a 6,5-spiroketal motif,was isolated from the bark of Litsea coreana Lévl.var.lanuginosa(hawk tea).The structure of this compound was elucidated based on the high-resolution electrospray ionization mass spectrometry(HRESIMS),one-dimensional(1D)and two-dimensional(2D)nuclear magnetic resonance(NMR)spectroscopy,and single-crystal X-ray diffraction data.The cytotoxicity of this compound was assessed on the A549,HT-29,and SW1990 cell lines.
文摘Hibiscus sabdarrifa flowers are known the world over. In Cote d’Ivoire, they are commonly known as “bissap” and are of great interest to local people, who use them to make an eponymous herbal tea. This drink has potential medicinal and nutritional value (Khan et al., 2022). Nine (9) samples of dried flowers of the plant, packaged in 3 g sachets of a local Kuinafo brand, were used for physico-chemical analyses. Heavy metals, mineral salts, ash and moisture content were determined using methods adapted from the Association of Official Analytical Chemists (AOAC). The results showed the presence of heavy metals at levels whose intake should take into account the weight of the consumer in the case of mercury and arsenic (0.5 mg/Kg and 0.7 mg/Kg respectively). Apart from lead, whose level was not compliant (1.310 mg/Kg for a CSHPF standard of 0.5 mg/Kg), cadmium had a regulatory level (0.18 mg/Kg for a CSHPF standard of 0.20 mg/Kg). Nutrient intakes were significant (calcium, iron and potassium respectively at 1.79 g/100g;17.27 mg/100g and 1.76 g/100g of dried Hibiscus sabdarrifa flowers) and the moisture content suggested that the dried flowers were better preserved. The study of the physico-chemical characteristics of Hibiscus sabdarrifa flowers has enabled us to highlight the importance of quality control and the need to prevent any adverse effects on consumer health.
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.
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.
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.
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.
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.
基金Supported by General Project of Philosophy and Social Sciences Research in Universities of Jiangsu Province,2024(2024SJYB1650).
文摘Based on the requirements of local high-quality economic development and addressing the critical task of transformation and upgrading in the tea industry,this paper systematically discusses the necessity and feasibility of constructing an optimal industrialization operation system driven by the dual wheels of"branding+standardization".The article first clarifies the connotation of high-quality development and the synergistic mechanism between branding and standardization.It then analyzes the current situation and bottlenecks of China's tea industry development.Subsequently,it proposes a dual-wheel drive strategy where branding enhances value and standardization guarantees quality,and designs a systematic implementation plan involving industrial chain synergy optimization and integrated support from government,industry,academia,research,and application.On this basis,strategies and suggestions are proposed,encompassing the starting point,standard focal points,key effort areas,innovation points,and target achievement points.The aim is to promote the tea industry to break through homogeneous competition,achieve value ascent,and provide important industrial support for regional high-quality development through the construction of the aforementioned system.
