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Composition of cell material and biological value of the cellular protein of a micrococcus strain grown on hydrocarbons
Author(s) -
Ertola R. J.,
Mazza L. A.,
Balatti A. P.,
Sanahuja J.
Publication year - 1969
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260110312
Subject(s) - micrococcus , hexadecane , chemistry , biological value , sulfur , amino acid , composition (language) , single cell protein , chromatography , biochemistry , extraction (chemistry) , bacteria , strain (injury) , food science , petroleum ether , fraction (chemistry) , fermentation , organic chemistry , biology , genetics , linguistics , philosophy , anatomy
Abstract A Micrococcus cerificans strain was grown on simple media with n ‐hexadecane or gas oil as sole carbon sources. Samples of cellular material recovered from hexadecane or gas oil fermentations do not appear to differ significantly in their composition. The protein content varied from 68 to 75%. With the exception of sulfur amino acids the amino acid distribution compares favorably with the FAO standard reference protein. The biological value of cell protein recoveered from hexadecane fermentations was 67 (cascin, 70). In the case of gas oil grown cells, the cell material recovered had to be completely purified in order to improve its protein quality. After fully extraction of undersirable fraction with petroleum ether in a Soxhlet apparatus the biological value observed was 63.