镇江香醋醋醅微生物Bacillus circulans发酵特性的初步研究Fermentation Properties of Bacillus circulans,a Functional Microbe from Zhenjiang Aromatic Vinegar Brewing Mass
王宗敏,陆震鸣,朱青,史劲松,许正宏
摘要(Abstract):
对镇江香醋醋醅中分离的功能微生物——环状芽孢杆菌(Bacillus circulans)的发酵特性进行研究。通过耐醇性实验发现这株环状芽孢杆菌可以耐受6%的乙醇,在乙醇含量大于6%时菌体生长明显受到抑制。通过耐酸性实验发现该菌在pH大于4时菌体基本正常生长,但是pH小于4时菌体生长明显受抑制。通过对醋醅环境的模拟发酵试验发现,当醋醅浸取液的比例在20%~40%时,环状芽孢杆菌生长良好,并能促进酸性物质的产生,同时也能促进游离氨基酸和挥发性物质的产生。
关键词(KeyWords): 镇江香醋;功能微生物;环状芽孢杆菌;原位模拟发酵;发酵特性
基金项目(Foundation): 国家自然科学基金资助项目(31271922);; 国家863计划(2012AA021301,2014AA021501);; 国家工程技术中心开放课题(2011B2211,GCKF201109);; 天津市科技支撑计划重点项目(12ZCZDSY13200)
作者(Author): 王宗敏,陆震鸣,朱青,史劲松,许正宏
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