1Department of Food Science, Obihiro University of Agriculture and Veterinary Medicine, 080-8555, 11, Nishi-2-Sen, Inada-Cho, Obihiro, Hokkaido, Japan
2Department of Bioresources Science, United Graduate School of Agricultural Sciences, Iwate University, 020-8550, 3-18-8, Ueda, Morioka, Iwate, Japan
American Journal of Food Science and Technology.
2019,
Vol. 7 No. 1, 27-30
DOI: 10.12691/ajfst-7-1-5
Copyright © 2019 Science and Education PublishingCite this paper: Chengyu Jiang, Zhaohong Ci, Michiyuki Kojima. α-Glucosidase Inhibitory Activity in Rice Miso Supplementary with Black Soybean.
American Journal of Food Science and Technology. 2019; 7(1):27-30. doi: 10.12691/ajfst-7-1-5.
Correspondence to: Michiyuki Kojima, Department of Food Science, Obihiro University of Agriculture and Veterinary Medicine, 080-8555, 11, Nishi-2-Sen, Inada-Cho, Obihiro, Hokkaido, Japan. Email:
kojima@obihiro.ac.jpAbstract
In the present study, we processed rice miso supplementary with black soybean (RM-BS), and analyzed α-glucosidase inhibitory activity, polyphenol and melanoidin content at different fermentation periods (3, 6, 24, 36 months). The results showed α-glucosidase inhibitory activity, polyphenol and melanoidin content in RM-BS were increased with prolonging the fermentation periods. The α-glucosidase inhibitory activity in RM-BS was significantly stronger at different fermentation periods than those of RM, respectively. There were high positive relationships between α-glucosidase inhibitory activity and polyphenol content, and melanoidin content, respectively. Moreover, the ratio of melanoidin and polyphenol content was increased with prolonging the fermentation periods. So thus, we speculated that melanoidins were the main α-glucosidase inhibitory activity component in RM-BS. These results could be useful on researching and developing of rice miso products.
Keywords