Section 9
Chapter 8,381

Consumption of fermentation medium amino acids by spore-forming bacteria contaminating the process of lysine production

Smirnov, V.V.; Sergeichuk, M.G.; Mikhal'skii, L.A.; Zgonnik, V.V.; Furtat, I.M.; Vasilevskaya, I.A.

Mikrobiolohichnyi Zhurnal 58(1): 27-30


ISSN/ISBN: 0201-8462
Accession: 008380013

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Bacteria from Bacillus genus, contaminating the process of lysin production, have been quantitatively estimated for their capacity to assimilate aminoacids from the maize-molasses medium. Ten of 11 studied strains have completely utilized simultaneously 7-12 aminoacids, including lysine, of 14 aminoacids registered in the medium. All the strains under deep cultivation assimilated 100% of serin for 24 hours, the amount of which in the medium composed 3.6 mg/ml. Ten strains have utilized all the threonine, glycine, alanine and valine. Most strains only partially assimilated phenylalanine and histidine. A number of strains, thyrosine and phenylalanine in particular, accumulated some aminoacids in the process of growth.

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