Kemp P, Lander D J
Biochem J. 1983 Nov 15;216(2):519-22. doi: 10.1042/bj2160519.
Two species of rumen bacteria that have been previously shown to partially hydrogenate alpha-linolenic acid have been examined for their ability to hydrogenate gamma-linolenic acid. Free gamma-linolenic acid is hydrogenated in vitro to stearic acid by a rumen Fusocillus sp. (N.C.I.B. 11026), but only to cis,trans-octadec-6,11-enoic acid by a Butyrivibrio sp. The sequential hydrogenations are preceded by a delta 12-cis-delta 11-trans isomerization identical with that observed in the hydrogenation of alpha-linolenic acid and linoleic acid.
先前已证明两种瘤胃细菌能够部分氢化α-亚麻酸,现对它们氢化γ-亚麻酸的能力进行了研究。游离的γ-亚麻酸在体外被一种瘤胃梭状芽孢杆菌属(N.C.I.B. 11026)氢化为硬脂酸,但被一种丁酸弧菌属仅氢化为顺,反-十八碳-6,11-二烯酸。在连续氢化之前会发生δ12-顺式-δ11-反式异构化,这与在α-亚麻酸和亚油酸氢化过程中观察到的异构化相同。