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Inner Mongolia Agricultural University (2004)

Study on Biological Properties of Lactic Acid Bacteria from Sheep and Goat Milk and Milk Products in Ordin Semi-desert

王善辉;

Titre : Study on Biological Properties of Lactic Acid Bacteria from Sheep and Goat Milk and Milk Products in Ordin Semi-desert

Auteur : 王善辉;

Grade : Master’s Theses 2004

Université : Inner Mongolia Agricultural University

Résumé
In this study, Lactic acid bacteria were isolated from 48 samples of fresh sheep and goat milk and milk products, which collected from four towns in of Ordin Semi-desert the BaYanNaoer league of Inner Mongolia and their biological properties were studied. 59 strains of lactic acid bacteria were isolated and among of them 26 are bacilli and 33 are cocci. According to their characteristics of morphology,physiology and biochemstry sugar fermentation and amino acid composition of cell wall of bacteria,they were ascribed to 6 genus of Lactobacillus,Erysipelothrix,Streptococ,Lactococcus, Enterococcus and Pediococcus, containing with 16 species. Among of 59 strains 12 are L. plantarum, 5 are L. helveticus , 2 are L. casei, 1strains is for each of the L. zeae,L. oris respectively;11 are E. durans, 4 are E. faecalis, 3 are E. Pseudoarium, 2 are E. casseliflavus, 2 are E. dispar,2are P.inopinatus and 1strains is for each of the E. seriolicida,E. cecorum,E. faecium,S . anginosus ,L . lactis srubsp.lactis respectively. There are 4 strains were not determined both in genus and species in this study .The research revealed that the bacteria species of thee milk and milk products from the area were dominated by the bacteria colonies of L. casei, L. helveticus, E. durans and E. faecalis.At the temperatures of 15℃、20℃ and 40℃some of these bacteria are able to survive . Therefore, they belong to mesophylic bacteria .

Mots clés : Sheep and goat milk; Lactic Acid Bacteria; Isolation; Biological Properties; Mesophylic bcteia.;

Présentation (CNKI)

Page publiée le 12 octobre 2017