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Growth of, and aflatoxin production by Aspergillus parasiticus when in the presence of either Lactococcus lactis or lactic acid and at different initial pH values
Author(s) -
Luchese Rosa H.,
Harrigan W.F.
Publication year - 1990
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1990.tb01543.x
Subject(s) - aflatoxin , aspergillus parasiticus , lactococcus lactis , lactic acid , food science , chemistry , aspergillus , lactococcus , microbiology and biotechnology , bacteria , biology , genetics
L uchese , R.H. & H arrigan , W.F. 1990. Growth of, and aflatoxin production by Aspergillus parasiticus when in the presence of either Lactococcus lactis or lactic acid and at different initial pH values. Journal of Applied Bacteriology 69 , 512–519. Aspergillus parasiticus was grown in a modified Lab‐Lemco tryptone broth both as a single culture and in association with Lactococcus lactis . Total aflatoxin (B1 + G1) production was higher in the mixed cultures. This stimulation persisted when different batches of media, inoculation procedures and makes of ingredients were used. Aflatoxin yields increased in media with an initial pH of 4.2 compared with a pH close to neutrality. Hydrochloric and/or lactic acid had little effect. The substitution of half the carbon content of the medium by lactate resulted in stimulation or reduction on aflatoxin production when the initial pH was 4.2 or 6.8, respectively.