Premium
Reduced aflatoxin production by Aspergillus parasiticus after growth on a caffeine‐containing medium
Author(s) -
Moss M. O.,
Badii F.,
Clifford M. N.
Publication year - 1990
Publication title -
letters in applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.698
H-Index - 110
eISSN - 1472-765X
pISSN - 0266-8254
DOI - 10.1111/j.1472-765x.1990.tb01334.x
Subject(s) - aflatoxin , aspergillus parasiticus , caffeine , strain (injury) , food science , productivity , aspergillus , biology , mycotoxin , microbiology and biotechnology , fungi imperfecti , chemistry , botany , anatomy , endocrinology , macroeconomics , economics
Previous observations that the presence of caffeine could cause a reduction in the specific productivity of aflatoxins by Aspergillus parasiticus were confirmed. However, it was also shown that the reisolation of A. parasiticus from media containing caffeine as the sole source of nitrogen, provided a strain with a significantly reduced specific productivity even when grown in the absence of caffeine. This property has remained stable over several subcultures. The specific productivity of this strain is further reduced when it is grown in the presence of sub‐inhibitory concentrations of caffeine. Under normal culture conditions it appears to be indistinguishable from the parent strain except in the reduced specific productivity of aflatoxins.