为了探究霍山石斛(Dendrobium huoshanense,DH)与祁门红茶(Keemun black tea,KBT)协同预防免疫力降低的效果,以石斛多糖提取率和红茶多酚提取率为指标,通过单因素实验和正交试验对霍山石斛和祁门红茶的料液比、提取时间和提取次数因素...为了探究霍山石斛(Dendrobium huoshanense,DH)与祁门红茶(Keemun black tea,KBT)协同预防免疫力降低的效果,以石斛多糖提取率和红茶多酚提取率为指标,通过单因素实验和正交试验对霍山石斛和祁门红茶的料液比、提取时间和提取次数因素进行研究,分别优化霍山石斛与祁门红茶的提取工艺,再通过对RAW264.7细胞的毒性试验和吞噬活力试验确定红茶与石斛的最佳配比。结果表明,石斛多糖的最佳提取条件为:料液比1:80(g/mL),提取时间80 min,提取次数4次;茶多酚的最佳提取条件为:料液比1:80(g/mL),提取时间25 min,提取次数5次。通过观察不同比例的混合物对巨噬细胞的影响,确定红茶与石斛的配比。体外试验结果表明,75%红茶和25%石斛配比的祁门红茶和霍山石斛提取混合物(Keemun black tea and Dendrobium huoshanense,KTDH)具有最佳的免疫增强效果。体内试验结果表明KTDH高剂量组对小鼠由于免疫抑制而显著上调作用的细胞因子IL-2和IL-6水平有显著回调作用(P<0.01)。综上所述,霍山石斛与祁门红茶可协同增强免疫力并预防免疫力下降,可为霍山石斛和祁门红茶的开发应用途径提供新思路。展开更多
为了厘清安徽的皖南山区和大别山区常见药用植物资源的分布情况,通过对皖南山区和大别山区的多次野外实地调查、标本采集和鉴定,发现了分布于安徽皖南山区和大别山区的6个新记录种,分别是天南星科湘南星Arisaema hunanense Hand.-Mazt....为了厘清安徽的皖南山区和大别山区常见药用植物资源的分布情况,通过对皖南山区和大别山区的多次野外实地调查、标本采集和鉴定,发现了分布于安徽皖南山区和大别山区的6个新记录种,分别是天南星科湘南星Arisaema hunanense Hand.-Mazt.,姜科绿苞蘘荷Zingiber viridescens Z.H.Chen, G.Y.Li et W.J.Chen,,木兰科罗田玉兰Yulania pilocarpa(Z. Z. Zhao&Z. W. Xie) D. L. Fu,五味子科日本南五味子Kadsura japonica(L.) Dunal,旋花科毛牵牛Ipomoea biflora(Linnaeus) Persoon和茜草科卵叶茜草Rubia ovatifolia Z. Y. Zhang,凭证标本存放于安徽中医药大学腊叶标本馆(ACM)。这些新记录种的发现丰富了安徽省药用植物资源,为该地区的植物研究提供了参考,也表明安徽的山区植物资源的调查工作有待细致深入地开展。展开更多
This study analyzed the effects of ecological factors on secondary metabolites of Scutellaria baicalensis using two sources:92individual roots of S.baicalensis from all over China,and secondary metabolites,medicinal m...This study analyzed the effects of ecological factors on secondary metabolites of Scutellaria baicalensis using two sources:92individual roots of S.baicalensis from all over China,and secondary metabolites,medicinal materials and inorganic element contents obtained from the testing of 92 S.baicalensis rhizosphere soil samples.The study used environmental data from the Genuine Medicinal Material Spatial Analysis Database.Most of the chemical constituents of S.baicalensis were negatively correlated to latitude and positively correlated to temperature;generally,the contents of 21 chemical constituents were higher at low latitudes than that at high latitudes.By gradual regression analysis,it was found that the content of baicalin in S.baicalensis was negatively correlated to latitude and generally the content of inorganic elements in soil was excessively high(excluding Mg and Ca),which has a negative effect on the accumulation of chemical constituents in S.baicalensis.Based on the cluster analysis of 21 constituents,S.baicalensis from different places of origin was divided into two groups,and S.baicalensis was not genuine only in a specific small region.Within the zone from Chifeng,Inner Mongolia to Taibai,Shaanxi is suitable for accumulation of secondary metabolites of S.baicalensis and such a zone represents a suitable distribution and potential genuine producing area.展开更多
文摘为了探究霍山石斛(Dendrobium huoshanense,DH)与祁门红茶(Keemun black tea,KBT)协同预防免疫力降低的效果,以石斛多糖提取率和红茶多酚提取率为指标,通过单因素实验和正交试验对霍山石斛和祁门红茶的料液比、提取时间和提取次数因素进行研究,分别优化霍山石斛与祁门红茶的提取工艺,再通过对RAW264.7细胞的毒性试验和吞噬活力试验确定红茶与石斛的最佳配比。结果表明,石斛多糖的最佳提取条件为:料液比1:80(g/mL),提取时间80 min,提取次数4次;茶多酚的最佳提取条件为:料液比1:80(g/mL),提取时间25 min,提取次数5次。通过观察不同比例的混合物对巨噬细胞的影响,确定红茶与石斛的配比。体外试验结果表明,75%红茶和25%石斛配比的祁门红茶和霍山石斛提取混合物(Keemun black tea and Dendrobium huoshanense,KTDH)具有最佳的免疫增强效果。体内试验结果表明KTDH高剂量组对小鼠由于免疫抑制而显著上调作用的细胞因子IL-2和IL-6水平有显著回调作用(P<0.01)。综上所述,霍山石斛与祁门红茶可协同增强免疫力并预防免疫力下降,可为霍山石斛和祁门红茶的开发应用途径提供新思路。
文摘为了厘清安徽的皖南山区和大别山区常见药用植物资源的分布情况,通过对皖南山区和大别山区的多次野外实地调查、标本采集和鉴定,发现了分布于安徽皖南山区和大别山区的6个新记录种,分别是天南星科湘南星Arisaema hunanense Hand.-Mazt.,姜科绿苞蘘荷Zingiber viridescens Z.H.Chen, G.Y.Li et W.J.Chen,,木兰科罗田玉兰Yulania pilocarpa(Z. Z. Zhao&Z. W. Xie) D. L. Fu,五味子科日本南五味子Kadsura japonica(L.) Dunal,旋花科毛牵牛Ipomoea biflora(Linnaeus) Persoon和茜草科卵叶茜草Rubia ovatifolia Z. Y. Zhang,凭证标本存放于安徽中医药大学腊叶标本馆(ACM)。这些新记录种的发现丰富了安徽省药用植物资源,为该地区的植物研究提供了参考,也表明安徽的山区植物资源的调查工作有待细致深入地开展。
基金supported by the National Natural Science Foundation of China(81130070,81072989)the National Key Technology Research and Development Program of China(2012BAI29B02)
文摘This study analyzed the effects of ecological factors on secondary metabolites of Scutellaria baicalensis using two sources:92individual roots of S.baicalensis from all over China,and secondary metabolites,medicinal materials and inorganic element contents obtained from the testing of 92 S.baicalensis rhizosphere soil samples.The study used environmental data from the Genuine Medicinal Material Spatial Analysis Database.Most of the chemical constituents of S.baicalensis were negatively correlated to latitude and positively correlated to temperature;generally,the contents of 21 chemical constituents were higher at low latitudes than that at high latitudes.By gradual regression analysis,it was found that the content of baicalin in S.baicalensis was negatively correlated to latitude and generally the content of inorganic elements in soil was excessively high(excluding Mg and Ca),which has a negative effect on the accumulation of chemical constituents in S.baicalensis.Based on the cluster analysis of 21 constituents,S.baicalensis from different places of origin was divided into two groups,and S.baicalensis was not genuine only in a specific small region.Within the zone from Chifeng,Inner Mongolia to Taibai,Shaanxi is suitable for accumulation of secondary metabolites of S.baicalensis and such a zone represents a suitable distribution and potential genuine producing area.