Process Optimization and Evaluation of Quality Properties of Natto with Co-culture of Natto and

Overview

Journal Curr Res Microb Sci

Specialty Microbiology

Date 2025 Feb 13

PMID 39944779

Authors

Yi-Ni Ma

Xun Xu

Lai-Feng Chen

Jin-Ping Zhou

Zhen-Hui Cao

Qiu-Ye Lin

Affiliations

Soon will be listed here.

Abstract

The present study aimed to optimize the processing technology of natto fermented with natto and 2-2 and its effect on quality characteristics as well as volatile compounds. The results of single-factor tests and response surface methodology (RSM) showed that the optimal fermentation conditions of natto were L. inoculation amount of 0.3 %, fermentation temperature at 39 °C, fermentation time of 48 h, and after-ripening time of 24 h. Compared with natto control with natto only, natto co-cultured with natto and L. 2-2 showed higher scavenging ability of 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and greater nattokinase activity. Volatomics analysis revealed that 71 differential volatile compounds were identified with 23 up-regulated and 48 down-regulated. Especially, co-fermentation of natto and L. 2-2 increased generation of alcohols, ketones and esters while reduced pyrazines formation. The above results indicate that co-culture of natto and L. can enhance the antioxidant and nattokinase activity and modify the volatile profile in natto and have the potential for application as the mixed starter in natto production.

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