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The Effect of Humic Acids on Zymogenous Microbial Consortia Growth
Author(s) -
Miletić Srdjan B.,
Spasić Snežana D.,
Avdalović Jelena,
Beškoski Vladimir,
Ilić Mila,
GojgićCvijović Gordana,
Vrvić Miroslav M.
Publication year - 2014
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.201300034
Subject(s) - bioremediation , chemistry , ferric , humic acid , environmental chemistry , oxidative stress , chloride , microorganism , bacterial growth , microbial consortium , scavenging , bacteria , nuclear chemistry , food science , biochemistry , contamination , biology , antioxidant , organic chemistry , fertilizer , ecology , genetics
This paper describes experiments with standard humic acids (HA‐S) and humic acids (HA) isolated from soil that was contaminated with mazut and treated with a consortium of microorganisms for the process of bioremediation (HA‐E). Both acids inhibited the toxicity of ferric chloride and increased the growth of a zymogenous microbial consortia compared with controls. Electron paramagnetic resonance spectroscopy showed that HA‐S and HA‐E exhibit high anti‐oxidative activity involving free radical scavenging and iron sequestration. HA additionally promote microbial consortium growth by providing protection from oxidative stress.