Enriching the nutritive value of marigold (Tagetes erecta L) crop residues as a ruminant feed by lactic acid bacteria during ensilage

文献类型： 外文期刊

第一作者： Hou, Zhijiang

作者： Hou, Zhijiang;Hou, Zhijiang;Liu, Jianyong;Cai, Ming;Liu, Yanpei;Gao, Yuee;Huang, Bizhi;Hou, Zhijiang;Mu, Lan;Wanapat, Metha

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关键词： Biodegradation; Marigold; Terpenes; Volatile organic compounds

期刊名称：BMC VETERINARY RESEARCH （ 影响因子：2.741； 五年影响因子：2.955 ）

ISSN：

年卷期： 2021 年 17 卷 1 期

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收录情况： SCI

摘要： BackgroundMarigold (Tagetes erecta L) accounts for over half of the world's loose flower production, and marigold crop residue (MCR) are abundantly available and should be used as a forage. In this study, MCR from the last commercial flower pickings was ensilaged with lactic acid bacteria (LAB) and the shift in their volatile organic compounds (VOCs) profiles was monitored. Samples were collected at 6 different times during ensilage (3, 6, 9, 12, 15, 30days) to determine and quantify the VOCs changes using a solid-phase microextraction (SPME) technique and gas chromatography - mass spectrometry (GC-MS).ResultsAfter 30days, the caryophyllene and piperitone, which account for 14.7 and 12.1% of total VOCs, decreased by 32.9 and 9.6% respectively, alcohols increased from 2.8 to 8.1%, and the acetic acid content increased by 560%.ConclusionWe have confirmed LAB can degrade the content of terpenes and enhance the content of alcohols and acids in MCR, which was for the first time on terpene degradation in fodder by ensilage. These results have shed light on our understanding of how to improve fodder odor and to enhance terpene degradation by lactic acid bacteria fermentation.

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