1. Enhancing miso production with optimized puffed-rice koji and its biological function evaluation.
- Author
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Lin, Shin-Ping, Chou, Yu-Chieh, Chen, Chiao-En, Lai, Yen-Tso, Hsieh, Chen-Che, Tsai, Tsung-Yu, Lin, Yun-Hsin, Santoso, Shella Permatasari, Lin, Hui-Wen, and Cheng, Kuan-Chen
- Subjects
MISO ,KOJI ,SOLID-state fermentation ,GLYCOSIDASE inhibitors ,RESPONSE surfaces (Statistics) ,PLANT polyphenols ,FREE radical scavengers ,NUTRITIONAL value - Abstract
In order to enhance enzyme activities of koji and further improve the health benefits and nutritional value of miso, puffed rice was used to prepare koji with optimization of fermentation utilizing response surface methodology (RSM), and the optimized puffed rice koji was used to produce miso and low-salt miso. Results showed that β-glucosidase activity increased by 1.98-fold after RSM optimization. The optimized puffed rice koji also showed the highest β-amylase and protease activities (237.1 and 968.8 units/g, respectively) compared to rice koji (108.7 and 637.4 units/g, respectively). Moreover, miso made from puffed-rice koji presented a much higher polyphenol content, antioxidant activity, and aglycone conversion. These findings clarified the relationship between changes in enzyme activities in koji and the important components of miso, and also advance solid-state fermentation research and development of functional miso. • The puffed-rice was used in koji preparation for miso production. • The β-glucosidase activity of optimized puffed-rice koji was increased by 1.98-fold. • The enzyme and antioxidant activities of puffed-rice miso were enhanced. • The optimized puffed-rice koji improved the conversion of isoflavone aglycone. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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