咖啡中双萜糖苷的测定（作者译）

[Determination of diterpene glycosides in coffee (author's transl)].

作者信息

Maier H G, Wewetzer H

出版信息

Z Lebensm Unters Forsch. 1978 Aug 30;167(2):105-7. doi: 10.1007/BF01136137.

Abstract

The determination of 3'O-beta-D-glucopyranosyl-2'-O-isovaleroyl-2beta-(2-desoxy-atractyligenin)-beta-D-glucopyranoside (KA 1) and 2-O-beta-d-glucopyranosyl-atractyligenin (KA II) in coffee was carried out by liquid/liquid-partition, column chromatography, thin layer chromatography, and photometry. In robusta and arabusta green coffees KA I levels were below the limit of detection, in arabica green coffees between 170 and 460 mg/kg. KA II was present in robusta green coffees between 10 and 45 mg/kg, in arabusta green coffee at about 60 mg/kg, in arabica green coffees between 290 and 340 mg/kg. During roasting these values are reduced, but not during commercial extraction.

摘要

通过液-液分配、柱色谱、薄层色谱和光度法对咖啡中的3'O-β-D-吡喃葡萄糖基-2'-O-异戊酰基-2β-(2-脱氧苍术素)-β-D-吡喃葡萄糖苷（KA 1）和2-O-β-D-吡喃葡萄糖基苍术素（KA II）进行了测定。在罗布斯塔和阿拉布斯塔生咖啡中，KA I的含量低于检测限，在阿拉比卡生咖啡中为170至460毫克/千克。KA II在罗布斯塔生咖啡中的含量为10至45毫克/千克，在阿拉布斯塔生咖啡中约为60毫克/千克，在阿拉比卡生咖啡中为290至340毫克/千克。烘焙过程中这些值会降低，但商业萃取过程中不会。