584. Spore-forming organisms in commercial sterilized milk

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Abstract
A study has been made of the cultural and biochemical characteristics of heat-resistant thermophilic and mesophilic spore-forming bacteria isolated from raw and sterilized milk. The tests hitherto used in classifying this group of bacteria have been examined and some modifications suggested; as a result a simplified method of distinguishing different resistant spore-forming organisms in milk is proposed. The types of micro-organisms were few. The thermophiles were restricted toB. calidolactisand of the mesophilesB. subtilispredominated in sterilized milk andB. licheniformisin raw milk.