期刊
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
卷 21, 期 3, 页码 253-259出版社
SPRINGER
DOI: 10.1007/s11274-004-3625-y
关键词
biodegradation; Citrobacter diversus; Enterobacteria; Klebsiella oxytoca; olive oil mill; simple aromatic compounds; wastewater
Enterobacteria growing on wastewater from olive oil extraction were selected. Among this microflora, strains of Klebsiella oxytoca and Citrobacter diversus able to degrade simple monomeric aromatic compounds were isolated by enrichment culture of the effluent lacking simple sugars. In this preliminary investigation, the phenolic acids tested on solid and liquid media were gentisic, protocatechuic, p-hydroxybenzoic, benzoic, vanillic and ferulic. It was shown that the biodegradation of an aromatic acid is tightly dependent on both the type and the position of the radical substituted on the aromatic ring. Citrobacter was the most efficient strain in metabolizing ferulic acid in liquid medium at a concentration of 1.5 g/l. The substrate biodegradation yield achieved exceeded 86%.
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