title: Psychrotrophic bacterial flora of raw ewes' milk, with particular reference to gram negative rods.
abstract: The microbial flora of 141 samples of raw ewes' milk was determined, before and after storage for 72 h at 4 degrees and 7 degrees C. Penicillin-resistant bacteria represented ca 61% of 1760 psychrotrophic isolates from refrigerated milk samples. Pseudomonas fluorescens and Pseudomonas fluorescent group-related strains predominated (ca 86%) in the Gram negative psychrotrophic microflora. Leuconostoc dextranicum was the most frequent Gram positive psychrotrophic species isolated.
mesh_terms: D000818:Animals; D001419:Bacteria / Q000302:isolation & purification*; D005260:Female; D007934:Leuconostoc / Q000302:isolation & purification; D008892:Milk / Q000382:microbiology*; D011549:Pseudomonas / Q000302:isolation & purification; D012034:Refrigeration; D012756:Sheep