Volatile composition of red clover (Trifolium pratense L.) forages in Portugal:: The influence of ripening stage and ensilage

被引：41
|
作者：
Figueiredo, Ricardo [1 ]
Rodrigues, Ana I. [1 ]
Costa, M. do Ceu [1 ]
机构：
[1] Inst Nacl Engn, P-1649038 Lisbon, Portugal
来源：
FOOD CHEMISTRY | 2007年 / 104卷 / 04期
关键词：
red clover; Trifolium pratense L; volatile compounds; hay; silage;
D O I：
10.1016/j.foodchem.2007.02.022
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
tThe volatile organic compounds (VOCs) of three different red clover (Trifolium pratense L.) forages, fresh plant, hay and silage, were analyzed using GC and GC/MS. Comparing the volatile composition of hay and silage forages of red clover with the corresponding green plant. the effects of ripening and postharvest secondary metabolism can be noticed in hay and in ensilage. In hay, reductions of the percentages of alcohols. such as 3-methylbutanol and I-hexanol. of aldehydes and of low boiling point ketones are observed. A sesquiterpene (beta-farnesene, ca. 10%) and a phytol degradation product (6.10,14-trimethyl-2-pentadecanone; ca. 12%) were the most abundant compounds detected in hay. In silage, as a result of the fermentation of fresh red clover, esters (ca. 46/,)) are a more representative class of compounds. (c) 2007 Elsevier Ltd. All rights reserved.
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收藏
页码：1445 / 1453
页数：9
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