Microbiological quality of milk from two processing plants in Gaborone Botswana

Autor:	Sisai Mpuchane, Esther N Aaku, Ernest K. Collison, Berhanu A. Gashe
Rok vydání:	2004
Předmět:	biology fungi food and beverages Pasteurization Micrococcus biology.organism_classification Esterase law.invention law Pseudomonas fragi Bacillus circulans bacteria Bacillus coagulans Food science Corynebacterium pseudodiphtheriticum Food Science Biotechnology Pseudomonas cichorii
Zdroj:	Food Control. 15:181-186
ISSN:	0956-7135
DOI:	10.1016/s0956-7135(03)00031-8
Popis:	Raw and bottled commercial pasteurised milk from two processing plants in Gaborone, Botswana were assessed for mesophilic, psychrotrophic, proteolytic and lipolytic bacteria. Proteolytic-psychrotroph counts ranged between 101 and 105 CFU/ml in both milk types. Corynebacterium pseudodiphtheriticum (44%) and Bacillus brevis (72%) predominated in raw and commercial pasteurised milk respectively. Trypsin and chymotrypsin were detected in isolates of Bacillus circulans, Pseudomonas cichorii and Micrococcus lentus. Esterase and esterase lipase activity were observed in Corynebacterium nitrilophilus, Pseudomonas fragi, B. circulans, Bacillus coagulans, and M. lentus. The study demonstrated that post-process contamination and ineffective pasteurisation compromised the quality and shelf life of pasteurised milk.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5a45b5e19992f5c7878b7ac704654a3c https://doi.org/10.1016/s0956-7135(03)00031-8 Zobrazit plný text záznamu Full Text from ScienceDirect