Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists
Date (from‐to) : 2019/04 -2022/03
Author : Koriyama Takako
Beans stored under high temperature and high humidity do not tend to soften no matter how much they are heated, and their palatability decreases. This phenomenon is called hardening of beans. In this study, its mechanism and the cooking method corresponding to the harden beans were investigated. Focusing on the effect of "soaking" that is always performed in bean cooking, the water absorption rate and softening rate of harden beans were analyzed. From the obtained values, a cooking method was determined to avoid the occurrence of the curing phenomenona and predicted the optimum cooking time until the beans reached to the appropriate softness. In addition, stored beans showed significant changes not only in the seed coat but also in the composition and tissue of the cotyledon, which suggested that this also affected the functionality of the beans. From these facts, we obtained useful knowledge for effective utilization of stored beans in the future.