将[4-(14)C]胆固醇掺入燕麦（Avena sativa L.）植物的甾醇衍生物和皂苷中。

Incorporation of [4-(14)C] cholesterol into steryl derivatives and saponins of oat (Avena sativa L.) plants.

机构信息

Department of Biochemistry, University of Berne, Freiestrasse 3, CH-3012, Berne, Switzerland.

出版信息

Plant Cell Rep. 1982 Dec;1(6):253-6. doi: 10.1007/BF00272632.

Abstract

Sterols from both green and etiolated oat plants (Avena sativa) contain sitosterol, stigmasterol, cholesterol, Δ(7)-stigmastenol, Δ(7)-cholestenol and campesterol. In the saponin fraction avenacosides A and B and 26-desgluco-avenacosides A and B were detected. Etiolated plants incorporated [4-(14)C] cholesterol into steryl derivatives (esters, glycosides and acylated glycosides) and also into all of the 4 saponins. [4-(14)C] sitosterol, however, is incorporated only into steryl derivatives, but not in saponins. From this it is concluded that cholesterol, but not sitosterol is the in vivo precursor of oat saponins.

摘要

来自绿色和黄化燕麦植物（Avena sativa）的甾醇都含有谷甾醇、豆甾醇、胆固醇、Δ(7)-豆甾烯醇、Δ(7)-胆甾烯醇和菜油甾醇。在皂素部分检测到了燕麦皂素 A 和 B 以及 26-去葡萄糖燕麦皂素 A 和 B。黄化植物将[4-(14)C]胆固醇掺入甾醇衍生物（酯、糖苷和酰化糖苷）中，也掺入所有 4 种皂素中。然而，[4-(14)C]谷甾醇仅掺入甾醇衍生物中，而不掺入皂素中。由此可以得出结论，胆固醇而不是谷甾醇是燕麦皂素的体内前体。