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Isolation and identification of protease‐producing psychrotrophic bacteria from dairy products in India
Author(s) -
MALIK R. K.,
MATHUR D. K.
Publication year - 1983
Publication title -
international journal of dairy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.061
H-Index - 53
eISSN - 1471-0307
pISSN - 1364-727X
DOI - 10.1111/j.1471-0307.1983.tb02547.x
Subject(s) - psychrotrophic bacteria , protease , alcaligenes , micrococcus , flavobacterium , pseudomonas , biology , microbiology and biotechnology , isolation (microbiology) , food science , bacteria , enzyme , biochemistry , raw milk , genetics
Of the 259 proteolytic psychrotrophic bacterial cultures isolated from different dairy products produced at the National Dairy Research Institute, 39 cultures exhibited more than 150 units/ml protease activity. These isolates were identified and grouped into five genera, viz ., Pseudomonas spp ., Flavobacterium spp ., Alcaligenes spp ., Micrococcus spp., and Staphylococcus spp. The culture supernatants from six isolates retained more than 50% enzyme activity after heating at 50° C for 10 min, protease of Pseudomonas sp. 8–25 having maximum heat resistance.