- 著者
-
佐藤 圭吾
- 出版者
- 公益社団法人 日本食品科学工学会
- 雑誌
- 日本食品科学工学会誌 (ISSN:1341027X)
- 巻号頁・発行日
- pp.NSKKK-D-22-00087, (Released:2023-02-21)
A byproduct of sake production is sake-kasu , which contains abundant nutrients. However, since consumption of sake-kasu is decreasing, we attempted to develop a high-value sake-kasu. We steamed the sake-kasu to remove alcohol (nAS) and then inoculated the nAS with lactic acid bacteria or acetic acid bacteria and incubated the samples at 30°C for 2 days. The sugars, organic acids, amino acids, trace elements, and ferulic acid were measured in the fermented sake-kasu. Lactic acid was produced in the sake-kasu fermented with lactic acid bacteria, while gluconic acid was produced in the sake-kasu fermented with acetic acid bacteria. In the sake-kasu fermented with Gluconobacter oxydans NBRC 3189, seven times as much ferulic acid was produced compared to the non-fermented sake-kasu. Thus, we were able to produce a high value sake-kasu by bacterial fermentation.