Chrysanthemum coronarium as a Modulator of the Biohydrogenation of Linoleic Acid in the Rumen
作者单位：Rowett Research InstituteUniversity of AberdeenAberdeen AB21 9SBUK
会议名称：《中国畜牧兽医学会家畜内科学分会2009年学术研讨会》
会议日期：2009年
基 金：Plants and their extracts and other natural alternatives to antimicrobials in feeds,Contract No.:506487 National Natural Science Foundation of China(NSFC,grants No.30371040 30710103006)
关 键 词：biohydrogenation conjugated linoleic acid rumen vaccenic acid
摘 要：Inclusion of a daisy plant,Chrysanthemum coronarium,in a dairy sheep diet has been reported to result in increased concentrations of health-promoting conjugated linoleic acids(CLA) and vaccenic acid(VA;trans-11-18:1) in *** aim of this study was to determine if *** affected the biohydrogenation of linoleic acid(LA;cis-9,cis-12-18:2) to CLA,VA and stearic acid(SA;18:0) by ruminal *** digesta from four sheep receiving a mixed hay-concentrate diet were incubated in vitro with LA±dried whole-plant *** *** *** of LA disappearance and SA production decreased(P0.05) as a result of *** addition,and VA accumulation doubled(P0.05).Chrysanthemum parthenium and Chrysanthemum vulgare had much smaller effects on biohydrogenation,and commercial samples of *** flowers and leaves were also less effective than *** *** *** added to cultures of the only known ruminal SA-forming bacterium,Clostridium proteoclasticum,also inhibited LA metabolism by,but not growth of,this *** analysis indicated that *** *** Gem had a high content ofα-linolenic acid(LNA;cis-9,cis-12,cis-15-18:3;1.76%) compared to the other samples(0.2%). In fractions derived from differential(Soxhlet) solvent extraction,only extracts containing LNA affected LA metabolism by *** LNA inhibits biohydrogenation of LA at high concentrations, it was concluded that LNA was responsible for changes in the biohydrogenating activity of ruminal bacteria that had lead to the altered fatty acid composition of milk from animals receiving ***.
