著者

阿部 真紀 小針 清子 秋田 修

出版者

実践女子大学

雑誌

実践女子大学生活科学部紀要 (ISSN:13413244)

巻号頁・発行日

no.50, pp.171-176, 2013-03

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Many kinds of salted-koji( rice-koji soaked in salted water) for pickle preparation have cometo be sold in market recently. We assayed salt and alcohol concentrations of five commercialsalted-koji. Salt concentrations were 10.2% to 13.2% and alcohol concentrations distributedfrom 2.2% to 5.7%.In addition we assayed germination ability of koji-mold (Aspergillus oryzae) and enzymeactivities remaining in five commercial salted-koji and homemade salted-koji. Homemadesalted-koji maintained the germination ability, but no commercial salted-koji showed thegermination ability.Most of the saccharifying enzyme activities of commercial salted-koji were lower than theactivities of homemade salted-koji. On the other hand, commercial salted-koji E and D had thehighest acid protease and neutral protease activities respectively in all samples. We examinedthe effect of pasteurization and ethanol on enzyme activities by using homemade salted-koji.Many kinds of salted-koji( rice-koji soaked in salted water) for pickle preparation have cometo be sold in market recently. We assayed salt and alcohol concentrations of five commercialsalted-koji. Salt concentrations were 10.2% to 13.2% and alcohol concentrations distributedfrom 2.2% to 5.7%.In addition we assayed germination ability of koji-mold (Aspergillus oryzae) and enzymeactivities remaining in five commercial salted-koji and homemade salted-koji. Homemadesalted-koji maintained the germination ability, but no commercial salted-koji showed thegermination ability.Most of the saccharifying enzyme activities of commercial salted-koji were lower than theactivities of homemade salted-koji. On the other hand, commercial salted-koji E and D had thehighest acid protease and neutral protease activities respectively in all samples. We examinedthe effect of pasteurization and ethanol on enzyme activities by using homemade salted-koji.