Changes in the microbiota of lamb packaged in a vacuum and in modified atmospheres during chilled storage analysed by high-throughput sequencing

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• 作者：Taojun Wang^a ; Liang Zhao^b ; Yanan Sun^a ; Fazheng Ren^a ; ^c ; Shanbin Chen^a ; Hao Zhang^b ; Huiyuan Guo^a ; ^b ; ^{guohuiyuan@cau.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：CO2 ; High-throughput sequencing ; Lamb ; Microbiota ; Modified atmosphere packaging
• 刊名：Meat Science
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：121
• 期：Complete
• 页码：253-260
• 全文大小：634 K

文摘

Changes in the microbiota of lamb were investigated under vacuum packaging (VP) and under 20% CO₂/80% N₂ (LC), 60% CO₂/40% N₂ (MC), and 100% CO₂ (HC) modified atmosphere packaging (MAP) during chilled storage. Viable counts were monitored, and the total microbial communities were assessed by high-throughput sequencing. The starting community had the highest microbial diversity, after which Lactococcus and Carnobacterium spp. outcompeted during the 28-day storage. The relative abundances of Brochothrix spp. in the LC atmosphere were much higher than those of the other groups on days 7 and 28. The bacterial inhibiting effect of the MAP environments on microbial growth was positively correlated with the CO₂ concentration. The HC atmosphere inhibited microbial growth and delayed changes in the microbial community composition, extending the lamb's shelf life by approximately 7 days compared with the VP atmosphere. Lamb packaged in the VP atmosphere had a more desirable colour but a higher weight loss than lamb packaged in the MAP atmospheres.