Author:
Suárez Beatriz,Ferreirós Carlos M.
Abstract
SummaryThe psychrotrophic bacterial flora of milk was examined after aseptic hand milking. A total of 409 strains were tentatively characterized and classified into 17 groups by a reduced set of tests and cluster analysis. Lipolytic organisms (53·7%) exceeded proteolytic organisms (29·6%), and a reported predominance of oxidase-positive organisms (54·5%) was not found. Gram-negatives were mainly Entero-bacteriaceae,Flavobacterium, AcinetobacterandPseudomonas. In the Gram-positive groups Micrococcaceae were the most abundant (44·4%) followed by coryneforms (16·3%). Only two of seven commonly used disinfectants acted differently with Gram-positive and Gram-negative organisms (P< 0·01), although in general Gram-positives were more resistant than Gram-negatives.
Publisher
Cambridge University Press (CUP)
Subject
Animal Science and Zoology,General Medicine,Food Science
Reference38 articles.
1. The Effect of Chlorine on Spores of Clostridium bifermentans, Bacillus subtilis and Bacillus cereus
2. The bacterial content of milking machines and pipeline milking plants. 6. Psychrotrophic bacteria;Thomas;Dairy Industries International,1978
3. Terada A. , Tanaka S. & Uchida K. 1982 Studies on psychrotrophic bacteria of bovine milk. II. Proteolytic and lipolytic activities of psychrotrophic bacteria isolated from raw milk. Bulletin of the Nippon Veterinary and Zootechnical College No. 31 222–228
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