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Biodegradation of sodium isopropyl xanthate by Paenibacillus polymyxa and Pseudomonas putida

Natarajan, KA and Prakasan, Sabari MR (2013) Biodegradation of sodium isopropyl xanthate by Paenibacillus polymyxa and Pseudomonas putida. In: Minerals & Metallurgical Processing Journal, 30 (4). pp. 226-232.

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Abstract

Biodegradation of sodium isopropyl xanthate using two types of bacterial strains, Paenibacillus polymyxa and Pseudomonas putida, is demonstrated. At concentrations higher than 50 mg/L, the presence of xanthate in the growth medium resulted in bacterial toxicity, retarding growth kinetics. Adaptation through serial subculturing in the presence of higher xanthate concentrations resulted in the development of xanthate-tolerant bacterial strains. Stress proteins secreted by bacterial cells grown in the presence of xanthate were isolated. Bacterial cells could utilize xanthate as a growth substrate, degrading xanthate species in the process. Acidic metabolic products generated by bacterial metabolism promoted efficient xanthate decomposition. Probable mechanisms for the biodegradation of isopropyl xanthate are illustrated.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Society for Mining, Metallurgy and Exploration.
Keywords: Biodegradation; Isopropyl Xanthate; Paenibacillus Polymyxa; Pseudomonas Putida
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Francis Jayakanth
Date Deposited: 26 Dec 2013 05:03
Last Modified: 26 Dec 2013 05:03
URI: http://eprints.iisc.ac.in/id/eprint/48070

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