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Biodegradation

Title:		Using volatile organic compounds to enhance atrazine biodegradation in a biobed system
Author(s):		Tortella GR; Rubilar O; Stenstrom J; Cea M; Briceno G; Quiroz A; Diez MC; Parra L;
Address:		"Chemical Engineering Department, Universidad de La Frontera, PO Box 54-D, Temuco, Chile. gtortell@ufro.cl"
Journal Title:		Biodegradation
Year:		2013
Volume:		20130206
Issue:		5
Page Number:		711 - 720
DOI:		10.1007/s10532-013-9619-4
ISSN/ISBN:		1572-9729 (Electronic) 0923-9820 (Linking)
Abstract:		"The effect of the terpenes alpha-pinene, eucalyptol, and limonene, individually and as mixtures, on atrazine (ATZ) biodegradation and on biological activity in a biobed biomixture was evaluated. Additionally, terpenes emitted from the biomixture were captured using solid-phase microextraction. Terpenes added individually at relatively low concentrations (50 mug kg(-1)) significantly enhanced ATZ degradation and biological activity during the first incubation days. No significant effect on ATZ degradation was found from adding the terpene mixture, and, interestingly, an inhibitory effect on phenoloxidase activity was found during the first 20 days of incubation when mixed terpenes were present at 100 mug kg(-1). Capturing terpenes demonstrated that during the first hour of incubation a significant fraction of the terpenes was volatilized. These results are the first to demonstrate the feasibility of using terpenes to enhance the degradation of a pesticide. However, successive applications of terpenes or the addition of materials that slowly release terpenes could sustain the ATZ degradation enhancement"
Keywords:		"Atrazine/*metabolism Biodegradation, Environmental Bioreactors/*microbiology Chromatography, High Pressure Liquid Fluoresceins/metabolism Half-Life Hydrolysis Monophenol Monooxygenase/metabolism Terpenes Volatile Organic Compounds/*metabolism Volatilizati;"
Notes:		"MedlineTortella, G R Rubilar, O Stenstrom, J Cea, M Briceno, G Quiroz, A Diez, M C Parra, L eng Research Support, Non-U.S. Gov't Netherlands 2013/02/07 Biodegradation. 2013 Sep; 24(5):711-20. doi: 10.1007/s10532-013-9619-4. Epub 2013 Feb 6"