4.7 Article

Exploring major variable factors influencing flavor and microbial characteristics of Pixian Doubanjiang

期刊

FOOD RESEARCH INTERNATIONAL
卷 152, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.foodres.2021.110920

关键词

Pixian Doubanjiang; Flavor; Microbial community; Variable factors; Regional features

资金

  1. Ministry of Science and Technology of the People's Republic of China [SQ2018YFC160049]

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This study investigated the flavor and microbial community characteristics of Pixian Doubanjiang (PXDBJ) using polyphasic detection approaches, revealing the impact of chili varieties and ripening periods on its features. The results established a classification model and highlighted the potential contributions of variable factors to flavor, providing valuable insights for exploring the fermentation mechanism and controlling product quality.
Pixian Doubanjiang (PXDBJ) is a typical Asian condiment with a unique spicy flavor produced by traditional spontaneous solid-state fermentation. In this study, flavor and the microbial community characteristics of PXDBJ were investigated based on polyphasic detection approaches, and further revealed the potential regulations of the variable factors on its characteristics. Specifically, the chili varieties and the ripening periods affected the features of organic acids and amino acids, respectively. PLS-DA plot demonstrated that the volatiles contents varied by the intermediate product Banpei and the ripening periods although the predominant aroma compounds were roughly the same. Those results were verified by Spearman's arithmetic (P < 0.05), and established a chili variety-classification model based on OPLS-DA plot (Q(2)(cum) = 0.918, P < 0.05). In addition, the relative abundance of Saccharomycetales, Zygosaccharomyces, and Muribaculaceae varied with ripening periods, and further revealed the contributions of those variable factors to the flavor and correlated with the predominant microbes. This comprehensive study on the raw materials and spatiotemporal characteristics is valuable for exploring the fermentation mechanism and controlling the product quality.

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