Effect of 3-Phenyllactic Acid and 3-Phenyllactic Acid-Producing Lactic Acid Bacteria on the Characteristics of Alfalfa Silage

Zhe Wu, Shengyang Xu, Ying Yun, Tingting Jia and Zhu Yu
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Zhe Wu: College of Grassland Science and Technology, China Agricultural University, Beijing 100093, China
Shengyang Xu: College of Grassland Science and Technology, China Agricultural University, Beijing 100093, China
Ying Yun: College of Grassland Science and Technology, China Agricultural University, Beijing 100093, China
Tingting Jia: College of Grassland Science and Technology, China Agricultural University, Beijing 100093, China
Zhu Yu: College of Grassland Science and Technology, China Agricultural University, Beijing 100093, China

Agriculture, 2019, vol. 10, issue 1, 1-11

Abstract: In this study, an experiment was performed to evaluate the effect of lactic acid bacteria and 3-phenyllactic acid (PLA) on the fermentation quality and chemical composition of alfalfa silage. Several PLA-tolerant strains were screened from silages and identified. The selected strains (1 × 10 6 colony forming units/g fresh alfalfa) and PLA (1.0, 2.0, or 3.0 g/kg) were applied to alfalfa before ensiling. After 45 days of storage, the silages were unsealed and subjected to component analysis. Biochemical methods and 16S rDNA gene sequencing were used for the identification of the two strains as Lactobacillus plantarum . The characteristics of chemical and fermentation compounds indicated that PLA and the two strains efficiently improved the quality of the alfalfa silage. It can be concluded that the use of the strains and PLA can significantly improve the quality of silage.

Keywords: 3-phenyllactic acid; alfalfa silage; Lactobacillus plantarum; strain screening (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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