泡菜中产香酵母的分离及其应用研究Study on Isolation and Application of Aroma-Producing Yeast in Pickles
钱芮,何义国,徐腾,赵兴秀
摘要(Abstract):
为提升四川泡菜的风味,该研究对泡菜中产香酵母的分离和应用进行了探究。从四川3个地区泡菜汁中分离出21株产香酵母,通过嗅闻法和总酯滴定法,并结合理化特性筛选出一株特性优良的酵母菌Y3,经鉴定为Wickerhamomyces anomalus。该菌株能耐受14%的盐浓度,在pH值为3~4范围内稳定生长,其发酵液的总酯含量可达1.22 g/L,不产生白膜、纤维素酶和果胶酶。将两种植物乳杆菌与Y3按不同比例发酵芥菜汁时,经感官品评和SPME-GC-MS分析,发现比例为1∶1∶1时整体接受度最高,共检测出31种挥发性风味成分,主要由酯类、醇类以及少量的醛类和烯烃类等组成,其相对含量达80.283%。影响香气的主要成分中,酯类含量达41.927%,醇类含量达27.163%。该研究结果显示,产香酵母在泡菜风味的形成中发挥着极其重要的作用,为后续制备乳酸菌和酵母菌的复合菌剂奠定了基础。
关键词(KeyWords): 四川泡菜;产香酵母;混合发酵;SPME-GC-MS分析;挥发性风味成分
基金项目(Foundation): 四川省科技厅项目(2021JDRC0129);; 大学生创新创业训练计划项目(S202210622079);; 研究生创新基金项目(Y2021039);; 四川省固态发酵资源利用重点实验室项目(2022Gtzd04)
作者(Author): 钱芮,何义国,徐腾,赵兴秀
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