挤压葵花籽粕酱油制曲工艺对成曲中性蛋白酶活力的影响Effect of Koji Making Process of Extruded Sunflower Seed Meal Soy Sauce on Neutral Protease Activity of Finished Koji
闫闯硕,梁同裕,张信,王雨凡,孙颖,李宏军
摘要(Abstract):
制曲是酱油酿造中的关键环节,成曲中性蛋白酶活力直接影响酱油的品质。以最优挤压条件下的葵花籽粕挤出物和麸皮为原料制备酱油成曲,研究制曲温度、制曲时间、润水量和辅料含量4个因素对成曲中性蛋白酶活力的影响,并通过响应面试验优化得到最佳制曲工艺条件为制曲温度34℃、制曲时间54 h、润水量115%、辅料含量33%。在此条件下挤压葵花籽粕成曲中性蛋白酶活力为(4 481.53±20.10) U/g干基。与未挤压葵花籽粕成曲相比,中性蛋白酶活力提高了26.38%。
关键词(KeyWords): 挤压膨化;葵花籽粕;酱油;制曲;中性蛋白酶活力
基金项目(Foundation): 山东省重点研发计划项目(2023TZXD004)
作者(Author): 闫闯硕,梁同裕,张信,王雨凡,孙颖,李宏军
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