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[Adsorption of the antibiotic, nisin, to Streptococcus lactis cells]. 1980

V A Grushina, and I P Baranova, and N S Egorov

Nizin is produced by Str. lactis, strain MSU. During biosynthesis it is excreted into the fermentation broth and gradually adsorbed on the organism cells. This was confirmed by experiments with an inactive variant of Str. lactis IIa. The cells of this culture adsorbed nizin from "active" fermentation broth. Adsorption of nizin depended on pH of the medium; at pH 2,3 the cells did not adsorbe the antibiotic and at pH 6.6 the amount of the antibiotic adsorbed by the cells was maximum.

UI MeSH Term Description Entries
D009561 Nisin A 34-amino acid polypeptide antibiotic produced by Streptococcus lactis. It has been used as a food preservative in canned fruits and vegetables, and cheese.
D003470 Culture Media Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN. Media, Culture
D006863 Hydrogen-Ion Concentration The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations
D000327 Adsorption The adhesion of gases, liquids, or dissolved solids onto a surface. It includes adsorptive phenomena of bacteria and viruses onto surfaces as well. ABSORPTION into the substance may follow but not necessarily. Adsorptions
D013294 Lactococcus lactis A non-pathogenic species of LACTOCOCCUS found in DAIRY PRODUCTS and responsible for the souring of MILK and the production of LACTIC ACID. Streptococcus lactis,Lactococcus lactis subsp. lactis
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor
D014644 Genetic Variation Genotypic differences observed among individuals in a population. Genetic Diversity,Variation, Genetic,Diversity, Genetic,Diversities, Genetic,Genetic Diversities,Genetic Variations,Variations, Genetic

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