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Production and control of extracellular α ‐amylase in Micrococcus varians
Author(s) -
Adeleye Adeyemi I.
Publication year - 1990
Publication title -
journal of basic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0233-111X
DOI - 10.1002/jobm.3620301004
Subject(s) - starch , fructose , amylase , micrococcus , glycine , extracellular , biochemistry , food science , ammonium , chemistry , enzyme , carbon source , growth medium , bacteria , biology , amino acid , organic chemistry , genetics
An extracellular α‐amylase was induced in cultures of Micrococcus varians during growth in a liquid medium containing starch as sole carbon source. Synthesis of this enzyme was repressed by the addition of glucose or fructose to starch metabolizing cells and was induced in a glucose or fructose metabolizing culture by the addition of starch. Glycine was found to enhance growth and production of α‐amylase while the least growth and enzyme activity was recorded in medium containing ammonium sulphate as nitrogen source.