Background Organic selenium(Se)has gained recognition in poultry nutrition as a feed additive to boost production and Se deposition in eggs and tissues,owing to its high bioavailability,efficient tissue accumulation a...Background Organic selenium(Se)has gained recognition in poultry nutrition as a feed additive to boost production and Se deposition in eggs and tissues,owing to its high bioavailability,efficient tissue accumulation and minimal toxicity.Selenium-enriched yeast(SeY)is a well-established source,while selenium-enriched lactobacilli(SeL),a newer alternative,offers the added benefits of probiotics.This study examined the effects of SeY and SeL on egg quality,antioxidant capacity,Se deposition,and gut health in laying hens.After a two-week pre-treatment with a Sedeficient diet(SeD),450 Hy-Line Brown laying hens(30-week-old)were assigned into five dietary groups with six replicates of 15 hens each.The groups included a SeD,SeD supplemented with 1.5 mg Se/kg from SeY(SeY15),or 1.5,3.0,and 6.0 mg Se/kg from SeL(SeL15,SeL30,SeL60).The feeding trial lasted for 12 weeks.Results SeY15 and SeL15 improved the feed-to-egg ratio(P<0.05)in the latter stages.Haugh units were significantly increased(P<0.05)in the SeY15 and SeL30 groups,while darker yolk color(P<0.05)was observed in the SeY15,SeL15,and SeL60 groups.All Se-supplemented diets increased Se content in whole eggs,albumen,and yolk(P<0.05),while SeL groups showed a dose-dependent effect.Antioxidant enzyme activities increased,and MDA content decreased in the serum(P<0.05),with SeY15 showing the highest GSH-Px levels(P<0.05).SeL60 increased serum alkaline phosphatase and aspartate transaminase,and distorted the liver architecture(P<0.05).Se-diets reduced concentrations of reactive oxygen species(ROS)in the ileum and liver(P<0.05).SeL15 improved the ileal villus height-tocrypt depth ratio(P<0.05).SeY15 and/or SeL15 up-regulated TXNRD1 and SEPHS1 mRNA while down-regulating SCLY expression in the liver.SeY15 altered ileal microbiota by increasing both beneficial and pathogenic bacteria,whereas SeL15 predominantly boosted beneficial bacteria.Conclusion SeL integrates the antioxidant properties of organic Se with the probiotic benefits on gut health,resulting in a performance-enhancing effect comparable to that of SeY.However,high SeL level(6.0 mg Se/kg)compromised productivity and metabolic functions while enhancing Se deposition.展开更多
The objective of this study was to verify the protective effect of Bifidobacterium longum(BL) and the synergistical effect of Selenium and BL on alcohol plus high fat diet(HFD) induced hepatic injury in mice. We also ...The objective of this study was to verify the protective effect of Bifidobacterium longum(BL) and the synergistical effect of Selenium and BL on alcohol plus high fat diet(HFD) induced hepatic injury in mice. We also want to explore the mechanism of Selenium-enriched Bifidobacterium longum(Se BL). C57 BL/6 mice were treated with alcohol plus HFD with or without different dosage of BL or Se BL for 4 weeks. Serum levels of ALT, AST, TC, TG, LDL-C, HDL-C, FFAs, TNF-α, IL-6 and IL-1β, hepatic MDA level, SOD activity, the m RNA levels of AMPK, PPAR-α and SREBP1 were invested. Se BL inhibited lipid accumulation in hepatocytes;reduced serum AST and ALT levels;improved dyslipidemia;decreased serum FFAs, TC, TG and LDL-C levels. Se BL also inhibited alcohol plus HFD-induced hepatocyte oxidative stress through decrease in hepatic MDA levels and increase in SOD activity. Se BL also regulated lipid metabolism related genes such as AMPK, PPAR-α and SREBP1. Although BL had similar effect as Se BL, Se BL is more effective than BL. Se BL protected mice from alcohol plus HFD-induced hepatic injury in mice because of its inhibitory effect on hepatocellular oxidative stress, lipogenesis and inflammation. Selenium enhanced the protective effect of BL.展开更多
High-salt diet is well recognized as a risk factor for hypertension,and dietary intervention plays a critical role in the prevention of hypertension.The current study investigated the effects of selenium-enriched gree...High-salt diet is well recognized as a risk factor for hypertension,and dietary intervention plays a critical role in the prevention of hypertension.The current study investigated the effects of selenium-enriched green tea(Se-GT)and ordinary green tea(GT)on prevention of hypertension of rats induced by high-salt diet,as well as their potential regulatory and mechanism.Our results showed that GT and Se-GT supplementations significantly prevented the increase of blood pressure(BP),activated the phosphoinosmde-3-kinase/protein kinase B(PI3K/Akt)signaling pathway,and regulated the gene expression related to BP,as well as improved the tissue damage like heart,liver,and kidneys.Besides,the key parameters associated with oxidative stress,inflammation and endothelial dysfunction were also altered by GT and Se-GT treatments.Importantly,GT or Se-GT administration adjusted the diversity and composition of the intestinal flora.Moreover,GT and Se-GT supplementations increased the abundance of beneficial bacteria and reduced the abundance of harmful or conditional pathogenic bacteria.More specifically,GT intake specifically and significantly enriched the relative abundance of Paraprevotella and Bacteroides,whereas Se-GT was characterized by specific and significant enrichment for Allobaculum and Bifidobacterium.Our results proved that dietary supplement of GT and Se-GT remarkably improved the vascular functions and effectively prevented tissue damage by regulation of intestinal flora,and thus preventing hypertension induced by high-salt diet.展开更多
As an important symbol of agricultural and sideline products in Ankang City,selenium-enriched tea affects the development of regional agricultural and sideline industries.In this paper,the development status and probl...As an important symbol of agricultural and sideline products in Ankang City,selenium-enriched tea affects the development of regional agricultural and sideline industries.In this paper,the development status and problems of the selenium-enriched tea products of Ankang were analyzed in terms of capital,technology,management and sales mode.This research is of positive significance to the development of selenium-enriched products and other agricultural and sideline products of health value,and plays a very important role in promoting the cultivation of village-level characteristic industries and the effective realization of targeted poverty alleviation.展开更多
[Objectives] The aims were to optimize the extraction process of selenoproteins from selenium-enriched rice in Guangxi and provide references for the intensive processing and comprehensive utilization of selenium prot...[Objectives] The aims were to optimize the extraction process of selenoproteins from selenium-enriched rice in Guangxi and provide references for the intensive processing and comprehensive utilization of selenium protein resources. [Methods]Selenium-enriched rice was used as materials to extract selenoproteins by phosphate buffer extraction method and to optimize the extraction process of selenoproteins by using the orthogonal experiment. Proteins and selenium content was measured by Coomassie Brilliant Blue G-250 reagent and AFS（ atomic fluorescence spectrometry） respectively. [Results] The most significant factor affecting extraction of rice Selenoproteins was extraction NaO H concentration,followed by the ratio of solid-liquid,temperature and then extraction time. The optimum extraction conditions of selenoproteins from rice were extraction temperature of 50 ℃,NaO H concentration of 0. 14 mol/L,extraction time of 5 h,and solid-liquid ratio of 1∶ 30. [Conclusions]The alkali extraction process optimized by orthogonal test could effectively improve the extraction rate of selenoproteins,and the optimized process parameters could be popularized and applied in practical production.展开更多
Selenium is an essential trace element for human health.Eating selenium-enriched eggs is conducive to easily and effectively solving the problem of selenium deficiency.In the production process of selenium-enriched eg...Selenium is an essential trace element for human health.Eating selenium-enriched eggs is conducive to easily and effectively solving the problem of selenium deficiency.In the production process of selenium-enriched eggs,different selenium sources,additive doses,feeding time,and the addition of other vitamins,trace elements,and methionine in the diet will influence the deposition of selenium in eggs.Through this review,it is intended to provide a reference for the practical,safe and economical production of selenium-enriched eggs.展开更多
Taking Scientific Outlook on Development as the guiding principle,this paper introduced the principles of innovation,coordination,green,openness and sharing. Based on gifted advantages of selenium-enriched soil and se...Taking Scientific Outlook on Development as the guiding principle,this paper introduced the principles of innovation,coordination,green,openness and sharing. Based on gifted advantages of selenium-enriched soil and selenium-enriched industry development in Guangxi,it discussed current practice,stressed green,ecological,characteristic demonstration,transformation and upgrading,and targeted poverty alleviation. Finally,it came up with perspective,practical,and operational strategies and recommendations for development of selenium-enriched industry,to provide reference for sustainable development of selenium-enriched functional industry in Guangxi.展开更多
In order to improve the added value of the main vegetable products in Qinghai Province,we researched the effect of soil selenium content on vegetable quality in selenium-enriched area of Qinghai. Through the analysis ...In order to improve the added value of the main vegetable products in Qinghai Province,we researched the effect of soil selenium content on vegetable quality in selenium-enriched area of Qinghai. Through the analysis of Qinghai selenium-enriched soil selenium content and5 kinds of main vegetables corresponds to the total selenium,part of the mineral elements and soluble sugar and VC content,the effects of soil selenium levels on selenium absorption and nourishment quality of vegetables were researched. The results showed that he Qinghai selenium-enriched soil selenium content in the range of 100. 00-563. 00 μg/kg,among them,the soil samples with sufficient selenium and rich selenium accounted for 76. 53% and 18. 88%,respectively. Soil selenium content of garlic sampling area was relatively high,and soil selenium content of sugar beet sampling area was relatively low. Vegetable selenium content was in the range of 11. 00-340. 94 μg/kg,the average content of total selenium content of garlic was up to 170. 40 μg/kg,and the average content of the total selenium content of radish is 73. 00 μg/kg.90. 63% of the vegetables in the region reached the level of sufficient selenium,and 70. 31% reached the level of selenium enrichment. The average content of Ca and Mg was higher than the national average. There was no significant correlation between selenium content of soil and vegetable and nutritional quality.展开更多
The cultivation technology of selenium-containing plant Pueraria thomsonii Benth was summarized from the producing area conditions,variety selection,field management and other aspects,which is of great significance fo...The cultivation technology of selenium-containing plant Pueraria thomsonii Benth was summarized from the producing area conditions,variety selection,field management and other aspects,which is of great significance for increasing the selenium concentration in humans or animals.展开更多
With the adjustment of the tropical and subtropical fruit industry organizations in southern China, the Hylocereus undatus(pitaya) industry is growing rapidly in subtropical Guangxi and other places. Guangxi is also t...With the adjustment of the tropical and subtropical fruit industry organizations in southern China, the Hylocereus undatus(pitaya) industry is growing rapidly in subtropical Guangxi and other places. Guangxi is also the largest natural selenium-rich region in the country, and selenium-enriched pitaya is increasingly sought after by the general public. This paper described in detail the selection of selenium-enriched pitaya production fields, key planting techniques and core selenium enrichment techniques, with a view to providing technical guidance for the standardized production of selenium-enriched pitaya and providing technical support for improving the quality and efficiency of pitaya production in natural selenium-rich areas.展开更多
Health ecotourism is an emerging form of tourism industry. Selenium is an essential nutrient in delaying aging,has signifi cant therapeutic effect on various diseases. Enshi Prefecture in Hubei Province enjoys a reput...Health ecotourism is an emerging form of tourism industry. Selenium is an essential nutrient in delaying aging,has signifi cant therapeutic effect on various diseases. Enshi Prefecture in Hubei Province enjoys a reputation of the "World Selenium Capital",is a region of high-concentration negative oxygen ion and livable climate. The prefecture has unique regional advantages with selenium-enriched wellness ecotourism. Through introducing selenium-enriched tourism resources,ecotourism resources and health tourism resources in the World Selenium Capital,this paper analyses the development countermeasures for the selenium-enriched wellness ecotourism,and puts forward constructive suggestions.展开更多
Selenium(Se)is an essential micronutrient that plays an important role in animal and human development and physiological homoeostasis.This review surveys the role of Se in the environment,plants and animal bodies,and ...Selenium(Se)is an essential micronutrient that plays an important role in animal and human development and physiological homoeostasis.This review surveys the role of Se in the environment,plants and animal bodies,and discusses data on Se biofortification with different sources of supplementation,from inorganic to organic forms,with special focus on Se-enriched yeast(Se-yeast).Although Se-yeast remains one of the main sources of organic Se,other emerging and innovative sources are reviewed,such as Se-enriched insects and Se-nanoparticles and their potential use in animal nutrition.Se-enriched insects are discussed as an option for supplying Se in organic form to livestock diets.Se-nanoparticles are also discussed,as they represent a more biocompatible and less toxic source of inorganic Se for animal organisms,compared to selenite and selenate.We also provide up to date information on the legal framework in the EU,USA,and Canada of Se that is contained in feed additives.From the scientific evidence available in the literature,it can be concluded that among the inorganic forms,sodium selenite is still one of the main options,whereas Se-yeast remains the primary organic form.However,other potential sources such as Se-enriched insects and Se-nanoparticles are being investigated as they could potentially combine a high bioavailability and reduced Se emissions in the environment.展开更多
水稻富硒是指通过自然或人工技术手段提高水稻中硒元素含量,使其达到国家“富硒食品”相关标准的过程。为系统揭示全球水稻富硒领域的研究态势与热点趋势,以2004-2024年为时间跨度,分别从Web of Science(WoS)核心数据库和中国知网(CNKI...水稻富硒是指通过自然或人工技术手段提高水稻中硒元素含量,使其达到国家“富硒食品”相关标准的过程。为系统揭示全球水稻富硒领域的研究态势与热点趋势,以2004-2024年为时间跨度,分别从Web of Science(WoS)核心数据库和中国知网(CNKI)数据库检索相关文献,经去重筛选后最终获得958篇英文文献与707篇中文文献。借助Excel统计分析与VOSviewer可视化工具,从文献产出趋势、国家/地区分布、核心机构、核心作者、关键词聚类及研究领域等多个维度开展文献计量分析。结果表明,全球水稻富硒研究年度发文量呈显著上升趋势,2016年后进入快速发展阶段,2024年WoS发文量达123篇;中国发文量居全球首位(占WoS总发文量的63.19%),远超美国等其他国家,华中农业大学资源与环境学院、中国农业大学资源与环境学院等为核心研究机构,Feng Xinbin、Fang Yong等为领域核心作者。关键词聚类分析显示,全球研究热点集中于“硒(selenium)”“生物强化(biofortification)”“镉(cadmium)”“硒形态(selenium speciation)”等主题,国内研究则聚焦“富硒水稻”“硒含量”“富硒土壤”“栽培技术”等核心方向。研究领域覆盖环境科学、植物学、食品科学和农学等多个学科,体现了水稻富硒研究的交叉性特征。展开更多
In this work,the content of selenium(Se),physicochemical properties,and antioxidant capacity of Se-enriched peanut proteins isolate(S-PPI)and its fractions arachin(S-Arachin)and conarachin(S-Conarachin)were investigat...In this work,the content of selenium(Se),physicochemical properties,and antioxidant capacity of Se-enriched peanut proteins isolate(S-PPI)and its fractions arachin(S-Arachin)and conarachin(S-Conarachin)were investigated.The S-PPI,S-Arachin,and S-Conarachin were prepared using natural Se-enriched peanut with alkali extraction,acid precipitation,and sedimentation coefficients method.The Se content of S-PPI(420.83μg/kg)was two times compared to ordinary peanut protein isolate(O-PPI,203.10μg/kg).Besides,the Se is more likely to bind with conarachin than arachin.The solubility curves of these peanut proteins at different pH were similar.The emulsifying activities and the emulsion stability of S-Arachin was relatively low,as well as its foaming activity and the foam stability was the lowest.The DPPH scavenging activity of peanut proteins were decreased in order of S-Conarachin,S-PPI,S-Arachin,and O-PPI,as well as reducing power and the superoxide radical scavenging activity.The antioxidant activity trend was similar to Se content distribution trend,suggesting that the content of Se is related to antioxidant activity.The finding may indicate that Se content played a positive role in promoting the antioxidant activity of peanut protein.展开更多
基金supported by the National Natural Science Foundation of China(32302774)Beijing Innovation Consortium of Agriculture Research System(BAIC04)+1 种基金China Agriculture Research System(CARS-40)the Agricultural Science and Technology Innovation Program of the Feed Research Institute of the Chinese Academy of Agricultural Sciences(CAASIFR-ZDRW202402).
文摘Background Organic selenium(Se)has gained recognition in poultry nutrition as a feed additive to boost production and Se deposition in eggs and tissues,owing to its high bioavailability,efficient tissue accumulation and minimal toxicity.Selenium-enriched yeast(SeY)is a well-established source,while selenium-enriched lactobacilli(SeL),a newer alternative,offers the added benefits of probiotics.This study examined the effects of SeY and SeL on egg quality,antioxidant capacity,Se deposition,and gut health in laying hens.After a two-week pre-treatment with a Sedeficient diet(SeD),450 Hy-Line Brown laying hens(30-week-old)were assigned into five dietary groups with six replicates of 15 hens each.The groups included a SeD,SeD supplemented with 1.5 mg Se/kg from SeY(SeY15),or 1.5,3.0,and 6.0 mg Se/kg from SeL(SeL15,SeL30,SeL60).The feeding trial lasted for 12 weeks.Results SeY15 and SeL15 improved the feed-to-egg ratio(P<0.05)in the latter stages.Haugh units were significantly increased(P<0.05)in the SeY15 and SeL30 groups,while darker yolk color(P<0.05)was observed in the SeY15,SeL15,and SeL60 groups.All Se-supplemented diets increased Se content in whole eggs,albumen,and yolk(P<0.05),while SeL groups showed a dose-dependent effect.Antioxidant enzyme activities increased,and MDA content decreased in the serum(P<0.05),with SeY15 showing the highest GSH-Px levels(P<0.05).SeL60 increased serum alkaline phosphatase and aspartate transaminase,and distorted the liver architecture(P<0.05).Se-diets reduced concentrations of reactive oxygen species(ROS)in the ileum and liver(P<0.05).SeL15 improved the ileal villus height-tocrypt depth ratio(P<0.05).SeY15 and/or SeL15 up-regulated TXNRD1 and SEPHS1 mRNA while down-regulating SCLY expression in the liver.SeY15 altered ileal microbiota by increasing both beneficial and pathogenic bacteria,whereas SeL15 predominantly boosted beneficial bacteria.Conclusion SeL integrates the antioxidant properties of organic Se with the probiotic benefits on gut health,resulting in a performance-enhancing effect comparable to that of SeY.However,high SeL level(6.0 mg Se/kg)compromised productivity and metabolic functions while enhancing Se deposition.
基金National Natural Science Foundation of China(Nos.81872917 and 81741164)。
文摘The objective of this study was to verify the protective effect of Bifidobacterium longum(BL) and the synergistical effect of Selenium and BL on alcohol plus high fat diet(HFD) induced hepatic injury in mice. We also want to explore the mechanism of Selenium-enriched Bifidobacterium longum(Se BL). C57 BL/6 mice were treated with alcohol plus HFD with or without different dosage of BL or Se BL for 4 weeks. Serum levels of ALT, AST, TC, TG, LDL-C, HDL-C, FFAs, TNF-α, IL-6 and IL-1β, hepatic MDA level, SOD activity, the m RNA levels of AMPK, PPAR-α and SREBP1 were invested. Se BL inhibited lipid accumulation in hepatocytes;reduced serum AST and ALT levels;improved dyslipidemia;decreased serum FFAs, TC, TG and LDL-C levels. Se BL also inhibited alcohol plus HFD-induced hepatocyte oxidative stress through decrease in hepatic MDA levels and increase in SOD activity. Se BL also regulated lipid metabolism related genes such as AMPK, PPAR-α and SREBP1. Although BL had similar effect as Se BL, Se BL is more effective than BL. Se BL protected mice from alcohol plus HFD-induced hepatic injury in mice because of its inhibitory effect on hepatocellular oxidative stress, lipogenesis and inflammation. Selenium enhanced the protective effect of BL.
基金financial sponsored by the National Key R&D Program of China(No.2018YFC1604405)Fund of Shanghai Engineering Research Center of Plant Germplasm Resources(No.17DZ2252700)Research on the health function of tea and deep-processed products in preventing metabolic diseases(No.C-6105-20-074)。
文摘High-salt diet is well recognized as a risk factor for hypertension,and dietary intervention plays a critical role in the prevention of hypertension.The current study investigated the effects of selenium-enriched green tea(Se-GT)and ordinary green tea(GT)on prevention of hypertension of rats induced by high-salt diet,as well as their potential regulatory and mechanism.Our results showed that GT and Se-GT supplementations significantly prevented the increase of blood pressure(BP),activated the phosphoinosmde-3-kinase/protein kinase B(PI3K/Akt)signaling pathway,and regulated the gene expression related to BP,as well as improved the tissue damage like heart,liver,and kidneys.Besides,the key parameters associated with oxidative stress,inflammation and endothelial dysfunction were also altered by GT and Se-GT treatments.Importantly,GT or Se-GT administration adjusted the diversity and composition of the intestinal flora.Moreover,GT and Se-GT supplementations increased the abundance of beneficial bacteria and reduced the abundance of harmful or conditional pathogenic bacteria.More specifically,GT intake specifically and significantly enriched the relative abundance of Paraprevotella and Bacteroides,whereas Se-GT was characterized by specific and significant enrichment for Allobaculum and Bifidobacterium.Our results proved that dietary supplement of GT and Se-GT remarkably improved the vascular functions and effectively prevented tissue damage by regulation of intestinal flora,and thus preventing hypertension induced by high-salt diet.
基金National Key R&D Program of China(2018YFD1100202)Shaanxi Social Science Fund Program of China(2018S30)Shaanxi Undergraduate Innovation Planning Project of China(201829041).
文摘As an important symbol of agricultural and sideline products in Ankang City,selenium-enriched tea affects the development of regional agricultural and sideline industries.In this paper,the development status and problems of the selenium-enriched tea products of Ankang were analyzed in terms of capital,technology,management and sales mode.This research is of positive significance to the development of selenium-enriched products and other agricultural and sideline products of health value,and plays a very important role in promoting the cultivation of village-level characteristic industries and the effective realization of targeted poverty alleviation.
基金Supported by the Science and Technology Major Project of Guangxi(Guike AA17202026)Program for Scientific Research and Technology Development in Xixiangtant District of Nanning City(201710304)+7 种基金the Special Fund for the Innovation-Driven Development in Guangxi(Guike AA17202019-4&AA17202019)the Science and Technology Development Fund of Guangxi Academy of Agricultural Sciences(Guinongke 2017JM03)the Program for the Scientific Research and Technology Development in Guangxi(Guikehe415104001-22)the Fundamental Research Funds for Guangxi Academy of Agricultural Sciences(Guinongke 2017YZ03)the Key Research and Development Program of Guangxi(Guike AB16380088)the Experiment Station for Selenium Featured Crops in Guangxi(Gui TS2016011)the Key Research and Development Program of Qingxiu District,Guangxi(2016039)the Scientific and Technological Transformative Project of Guangxi Academy of Agricultural Sciences(NO.2017NZ04)
文摘[Objectives] The aims were to optimize the extraction process of selenoproteins from selenium-enriched rice in Guangxi and provide references for the intensive processing and comprehensive utilization of selenium protein resources. [Methods]Selenium-enriched rice was used as materials to extract selenoproteins by phosphate buffer extraction method and to optimize the extraction process of selenoproteins by using the orthogonal experiment. Proteins and selenium content was measured by Coomassie Brilliant Blue G-250 reagent and AFS（ atomic fluorescence spectrometry） respectively. [Results] The most significant factor affecting extraction of rice Selenoproteins was extraction NaO H concentration,followed by the ratio of solid-liquid,temperature and then extraction time. The optimum extraction conditions of selenoproteins from rice were extraction temperature of 50 ℃,NaO H concentration of 0. 14 mol/L,extraction time of 5 h,and solid-liquid ratio of 1∶ 30. [Conclusions]The alkali extraction process optimized by orthogonal test could effectively improve the extraction rate of selenoproteins,and the optimized process parameters could be popularized and applied in practical production.
文摘Selenium is an essential trace element for human health.Eating selenium-enriched eggs is conducive to easily and effectively solving the problem of selenium deficiency.In the production process of selenium-enriched eggs,different selenium sources,additive doses,feeding time,and the addition of other vitamins,trace elements,and methionine in the diet will influence the deposition of selenium in eggs.Through this review,it is intended to provide a reference for the practical,safe and economical production of selenium-enriched eggs.
基金Supported by Key Science and Technology Project for Innovation-driven Development of Guangxi"High Efficient and Safe Use of Selenium-enriched Soil Resources"(2017AA19015)Scientific Research and Technological Development Program Project of Guangxi Province(Gui Ke He 415104001-22)+2 种基金Key Research and Development Program of Guangxi(Gui Ke AB16380088 and Gui Ke AB16380164)Scientific Research and Technological Development Program Project of Nanning City(20152054-13)Scientific Research and Technological Development Program of Xixiangtang District of Nanning City(2015312)
文摘Taking Scientific Outlook on Development as the guiding principle,this paper introduced the principles of innovation,coordination,green,openness and sharing. Based on gifted advantages of selenium-enriched soil and selenium-enriched industry development in Guangxi,it discussed current practice,stressed green,ecological,characteristic demonstration,transformation and upgrading,and targeted poverty alleviation. Finally,it came up with perspective,practical,and operational strategies and recommendations for development of selenium-enriched industry,to provide reference for sustainable development of selenium-enriched functional industry in Guangxi.
文摘In order to improve the added value of the main vegetable products in Qinghai Province,we researched the effect of soil selenium content on vegetable quality in selenium-enriched area of Qinghai. Through the analysis of Qinghai selenium-enriched soil selenium content and5 kinds of main vegetables corresponds to the total selenium,part of the mineral elements and soluble sugar and VC content,the effects of soil selenium levels on selenium absorption and nourishment quality of vegetables were researched. The results showed that he Qinghai selenium-enriched soil selenium content in the range of 100. 00-563. 00 μg/kg,among them,the soil samples with sufficient selenium and rich selenium accounted for 76. 53% and 18. 88%,respectively. Soil selenium content of garlic sampling area was relatively high,and soil selenium content of sugar beet sampling area was relatively low. Vegetable selenium content was in the range of 11. 00-340. 94 μg/kg,the average content of total selenium content of garlic was up to 170. 40 μg/kg,and the average content of the total selenium content of radish is 73. 00 μg/kg.90. 63% of the vegetables in the region reached the level of sufficient selenium,and 70. 31% reached the level of selenium enrichment. The average content of Ca and Mg was higher than the national average. There was no significant correlation between selenium content of soil and vegetable and nutritional quality.
基金Supported by Guangxi Science and Technology Major Project(GK AA17202027-4)Key R&D Program of Guangxi Science and Technology Department(GK AB16380087)+2 种基金Tengxian Pueraria thomsonii Benth Experimental Station Project of Guangxi(G TS201431)Special Fund for Basal Scientific Research of Guangxi Academy of Agricultural Sciences(GNK 2019M16)Nanning Science and Technology Planning Project(20192085)。
文摘The cultivation technology of selenium-containing plant Pueraria thomsonii Benth was summarized from the producing area conditions,variety selection,field management and other aspects,which is of great significance for increasing the selenium concentration in humans or animals.
基金Supported by Guangxi Innovation-driven Development Science and Technology Major Project(GK AA17202026,GK AA17202037)Scientific Research and Technology Development Program of Nanning City(20182100)+2 种基金Guangxi Key Research and Development Program(GK AB16380164)Guangxi Selenium-enriched Crop Experiment Station(GTS2016011)Fundamental Scientific Research Fund of Guangxi Academy of Agricultural Sciences(GNK 2017YZ03)
文摘With the adjustment of the tropical and subtropical fruit industry organizations in southern China, the Hylocereus undatus(pitaya) industry is growing rapidly in subtropical Guangxi and other places. Guangxi is also the largest natural selenium-rich region in the country, and selenium-enriched pitaya is increasingly sought after by the general public. This paper described in detail the selection of selenium-enriched pitaya production fields, key planting techniques and core selenium enrichment techniques, with a view to providing technical guidance for the standardized production of selenium-enriched pitaya and providing technical support for improving the quality and efficiency of pitaya production in natural selenium-rich areas.
基金Sponsored by Finance Program of Enshi Prefecture(2150199)Research and Development of Enshi Prefecture SciTech Planning(2013014)
文摘Health ecotourism is an emerging form of tourism industry. Selenium is an essential nutrient in delaying aging,has signifi cant therapeutic effect on various diseases. Enshi Prefecture in Hubei Province enjoys a reputation of the "World Selenium Capital",is a region of high-concentration negative oxygen ion and livable climate. The prefecture has unique regional advantages with selenium-enriched wellness ecotourism. Through introducing selenium-enriched tourism resources,ecotourism resources and health tourism resources in the World Selenium Capital,this paper analyses the development countermeasures for the selenium-enriched wellness ecotourism,and puts forward constructive suggestions.
基金"ASSO-Alimentazione Suina SOstenibile”funded by Regione Lombardia“One Health Action Hub:University Task Force for the resilience of territorial ecosystems”,funded by University of Milan-PSR 2021-GSA-Linea 6。
文摘Selenium(Se)is an essential micronutrient that plays an important role in animal and human development and physiological homoeostasis.This review surveys the role of Se in the environment,plants and animal bodies,and discusses data on Se biofortification with different sources of supplementation,from inorganic to organic forms,with special focus on Se-enriched yeast(Se-yeast).Although Se-yeast remains one of the main sources of organic Se,other emerging and innovative sources are reviewed,such as Se-enriched insects and Se-nanoparticles and their potential use in animal nutrition.Se-enriched insects are discussed as an option for supplying Se in organic form to livestock diets.Se-nanoparticles are also discussed,as they represent a more biocompatible and less toxic source of inorganic Se for animal organisms,compared to selenite and selenate.We also provide up to date information on the legal framework in the EU,USA,and Canada of Se that is contained in feed additives.From the scientific evidence available in the literature,it can be concluded that among the inorganic forms,sodium selenite is still one of the main options,whereas Se-yeast remains the primary organic form.However,other potential sources such as Se-enriched insects and Se-nanoparticles are being investigated as they could potentially combine a high bioavailability and reduced Se emissions in the environment.
基金supported by the National Natural Science Foundation of China(31301436)Natural Science Fund for Distinguished Young Scholars of Jiangxi Province(20192BCB23006).
文摘In this work,the content of selenium(Se),physicochemical properties,and antioxidant capacity of Se-enriched peanut proteins isolate(S-PPI)and its fractions arachin(S-Arachin)and conarachin(S-Conarachin)were investigated.The S-PPI,S-Arachin,and S-Conarachin were prepared using natural Se-enriched peanut with alkali extraction,acid precipitation,and sedimentation coefficients method.The Se content of S-PPI(420.83μg/kg)was two times compared to ordinary peanut protein isolate(O-PPI,203.10μg/kg).Besides,the Se is more likely to bind with conarachin than arachin.The solubility curves of these peanut proteins at different pH were similar.The emulsifying activities and the emulsion stability of S-Arachin was relatively low,as well as its foaming activity and the foam stability was the lowest.The DPPH scavenging activity of peanut proteins were decreased in order of S-Conarachin,S-PPI,S-Arachin,and O-PPI,as well as reducing power and the superoxide radical scavenging activity.The antioxidant activity trend was similar to Se content distribution trend,suggesting that the content of Se is related to antioxidant activity.The finding may indicate that Se content played a positive role in promoting the antioxidant activity of peanut protein.
