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Aerobic Degradation of 3-chlorobenzoic Acid by an Indigenous Strain Isolated From a Polluted River

Aerobic Degradation of 3-chlorobenzoic Acid by an Indigenous Strain Isolated From a Polluted River

Alfredo Gallego, Virginia L Gemini, Ariana A Rossen, Susana L Rossi, Valeria Trípodi, Daniel Corach, Estela Planes, Sonia E Korol

World J Microbiol Biotechnol. 2012 Mar;28(3):1245-52.

PMID: 22805844

Abstract:

An indigenous strain of Pseudomonas putida capable of degrading 3-chlorobenzoic acid as the sole carbon source was isolated from the Riachuelo, a polluted river in Buenos Aires. Aerobic biodegradation assays were performed using a 2-l microfermentor. Biodegradation was evaluated by spectrophotometry, chloride release, gas chromatography and microbial growth. Detoxification was evaluated by using Vibrio fischeri, Pseudokirchneriella subcapitata and Lactuca sativa as test organisms. The indigenous bacterial strain degrades 100 mg l(-1) 3-chlorobenzoic acid in 14 h with a removal efficiency of 92.0 and 86.1% expressed as compound and chemical oxygen demand removal, respectively. The strain was capable of degrading up to 1,000 mg of the compound l(-1). Toxicity was not detected at the end of the biodegradation process. Besides initial concentration, the effect of different factors, such as initial pH, initial inoculum, adaptation to the compound and presence of other substrates and toxic related compounds, was studied.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP535808-A	3-Chlorobenzoic acid		535-80-8	Price

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