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Use of Calcium Dipicolinate for Enumeration of Total Viable Endospore Populations Without Heat Activation

机译:二吡啶甲酸钙在没有热活化的情况下对所有可行的内生孢子种群计数的用途

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A method, based on germination with 50 mm CaCl2 and 40 mm sodium dipicolinate (Na2DPA), was developed for the determination of total viable counts of bacterial spores requiring heat activation. Incorporation of these germinating agents into Tryptone Glucose Extract Agar permitted plate-count enumeration of essentially 100% of Bacillus subtilis strain 5230 spores without a heat treatment. Other spore suspensions were surveyed for their response to CaCl2 and Na2DPA, and for the subsequent removal of the heat-activation requirement for enumeration of maximal populations.
机译:开发了一种基于50毫米CaCl2和40毫米吡啶二甲酸钠(Na2DPA)萌发的方法,用于测定需要热活化的细菌孢子的总存活数。将这些发芽剂掺入胰蛋白G葡萄糖提取物琼脂中,无需热处理即可基本上计数100%的枯草芽孢杆菌5230孢子的平板计数。调查了其他孢子悬浮液对CaCl2和Na2DPA的反应,并随后去除了热活化要求,以求出最大种群。

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