The second speciation of eight trace elements（Zn,Cr,Mg,Mn,Cu,Fe,Ni and Ca）in Stenoloma chusana（L.）Ching were studied.The aqueous solution of the traditional Chinese herbal was separated into the dissolved and part...The second speciation of eight trace elements（Zn,Cr,Mg,Mn,Cu,Fe,Ni and Ca）in Stenoloma chusana（L.）Ching were studied.The aqueous solution of the traditional Chinese herbal was separated into the dissolved and particulate forms by means of 0.45μm membrane filter.The dissolved form was determined as free ions and non-free ions,organic and inorganic,stable and labile forms by means of cation exchange resin,CHCl3 and D-411 Chelating resin.The results showed that the content of eight elements in particulate are far more than that in dissolved.The contents of free ions form of Zn,Ca and Mg are more than 75%.Mn hasn’t any free ions form.Cu、Fe and Ni exist on mostly non-free ions form.The content of free ions form of Cr is 54.23%.Eight elements exist on mostly inorganic forms after extraction of CHCl3.After the separation of D-411 Chelating resin,the content of Zn in labile form is 62.82%.The contents of else elements in stable form are higher than those in labile form and Ni hasn’t any labile form.展开更多
To study the chemical constituents of Stenoloma chusana.The compounds were isolated and purified by recrystallization and various chromatographic techniques.The structures were elucidated by chemical evidence and spec...To study the chemical constituents of Stenoloma chusana.The compounds were isolated and purified by recrystallization and various chromatographic techniques.The structures were elucidated by chemical evidence and spectroscopi methods.five compounds were obtained and identified as(1)hexacosanoic acid,(2)3-hydroxy-heptacosanol,(3)phthalic acid bis-(2-ethylhexyl)ester,(4)β-sitosterol,(5)daucosterol.The five compounds were isolated from this genus for the first time.展开更多
Contents of total flavonoids in above-ground part of Stenoloma chusanum(L.) Ching collected from different production regions were analyzed.The results showed that total flavonoid content in above-ground part of S.chu...Contents of total flavonoids in above-ground part of Stenoloma chusanum(L.) Ching collected from different production regions were analyzed.The results showed that total flavonoid content in above-ground part of S.chusanum collected from Qiubei of Yunnan Province was the highest,reached to 127.461 mg·g-1,and could keep the high content after transplanted to Nanjing of Jiangsu Province.The total flavonoid content in leaf blade was obviously higher than that in leaf stalk.It is suggested that S.chusanum from Qiubei is an excellent resources and the leaf blade of S.chusanum should be used mainly.展开更多
文摘The second speciation of eight trace elements（Zn,Cr,Mg,Mn,Cu,Fe,Ni and Ca）in Stenoloma chusana（L.）Ching were studied.The aqueous solution of the traditional Chinese herbal was separated into the dissolved and particulate forms by means of 0.45μm membrane filter.The dissolved form was determined as free ions and non-free ions,organic and inorganic,stable and labile forms by means of cation exchange resin,CHCl3 and D-411 Chelating resin.The results showed that the content of eight elements in particulate are far more than that in dissolved.The contents of free ions form of Zn,Ca and Mg are more than 75%.Mn hasn’t any free ions form.Cu、Fe and Ni exist on mostly non-free ions form.The content of free ions form of Cr is 54.23%.Eight elements exist on mostly inorganic forms after extraction of CHCl3.After the separation of D-411 Chelating resin,the content of Zn in labile form is 62.82%.The contents of else elements in stable form are higher than those in labile form and Ni hasn’t any labile form.
文摘To study the chemical constituents of Stenoloma chusana.The compounds were isolated and purified by recrystallization and various chromatographic techniques.The structures were elucidated by chemical evidence and spectroscopi methods.five compounds were obtained and identified as(1)hexacosanoic acid,(2)3-hydroxy-heptacosanol,(3)phthalic acid bis-(2-ethylhexyl)ester,(4)β-sitosterol,(5)daucosterol.The five compounds were isolated from this genus for the first time.
文摘Contents of total flavonoids in above-ground part of Stenoloma chusanum(L.) Ching collected from different production regions were analyzed.The results showed that total flavonoid content in above-ground part of S.chusanum collected from Qiubei of Yunnan Province was the highest,reached to 127.461 mg·g-1,and could keep the high content after transplanted to Nanjing of Jiangsu Province.The total flavonoid content in leaf blade was obviously higher than that in leaf stalk.It is suggested that S.chusanum from Qiubei is an excellent resources and the leaf blade of S.chusanum should be used mainly.
