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Growth and exopolysaccharide production by Azotobacter vinelandii in media containing phenolic acids
Author(s) -
Moreno J.,
VargasGarcía C.,
López M. J.,
SánchezSerrano G.
Publication year - 1999
Publication title -
journal of applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 1364-5072
DOI - 10.1046/j.1365-2672.1999.00680.x
Subject(s) - azotobacter vinelandii , chemistry , food science , biomass (ecology) , azotobacteraceae , protocatechuic acid , hydroxybenzoic acid , azotobacter , nitrogen , carbon fibers , carbon source , cupriavidus necator , biochemistry , bacteria , biology , nitrogen fixation , organic chemistry , polyhydroxyalkanoates , agronomy , nitrogenase , genetics , materials science , composite number , composite material , antioxidant
Azotobacter vinelandii was cultured in chemically defined, nitrogen‐free media supplemented with either 4‐hydroxyphenylacetic, 4‐hydroxybenzoic or protocatechuic acids at different concentrations. Under these conditions, biomass, exopolysaccharide production and consumption of the carbon sources were investigated. Results obtained throughout this study showed that 4‐hydroxyphenylacetic acid yielded the highest growth levels measured as biomass, and exopolysaccharide production, independently of the concentration of the carbon source tested. 4‐Hydroxybenzoic acid also supported appreciable growth and exopolysaccharide recovery by A. vinelandii. Protocatechuic acid, however, only allowed a very small production of biomass and exopolysaccharide by the strain investigated. Under given conditions, more than 26% of the carbon source supplied was converted to exopolysaccharide in cultures of A. vinelandii .