Bacterial Community Structure and Sensory Quality of Zha-chili in Enshi and Tongzi
In this study,Illumina MiSeq high-throughput sequencing technology was used to explore the differ-ences in bacterial community structures of 18 samples of Zha-chili collected from Enshi City,Enshi Tujia and Miao Autonomous Prefecture,Hubei Province and Tongzi County,Zunyi,Guizhou Province,and electronic nose and electronic tongue techniques were used to determine their flavor and taste indicators.The correlation between dominant bacterial genera and sensory quality indicators was analyzed.The sequencing results showed no significant differences in the α-diversity of the bacterial community of Zha-chili from the two re-gions(P>0.05),while significant differences in β-diversity were observed(P<0.05).The average relative content of Lactobacillus,Companilactobacillus,and Latilactobacillus in the Zha-chili samples collected from Enshi was significantly higher(P<0.05),while that in the Zha-chili samples collected from Tongzi was significantly lower(P<0.05),and LEfSe analysis found that these three dominant bacterial genera could be used as biomarker genera for the Zha-chili samples collected from Enshi.The measurement of sensory quality indicators showed that the sourness of the Zha-chili samples collected from Enshi was significantly higher(P<0.05),and the bit-terness and saltiness were significantly lower(P<0.05).Correlation analysis showed that some of the dominant bacterial genera for the Zha-chili samples collected from the two regions were significantly correlated with taste indicators(P<0.05);some were significantly correlated with taste indicators(P<0.01),but they were not sig-nificantly correlated with flavor indicators(P>0.05).It could be seen that there were significant differences in the bacterial community structure and sensory quality indicators of Zha-chili samples collected from Enshi and Tongzi,and there was a certain correlation between the bacterial community and taste indicators.
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