Biological Treatment of Organ Chlorinated Pesticide Using Local Bacterial Isolates (original) (raw)

International Journal for Sciences and Technology, 2013

Abstract

The aim of this research was to isolate microbial isolates with ability of growing in medium with presence of added pesticide and may therefore be used for bioremiation of pesticides contaminated sites (Soil and water). A bacterial groups which capable of degradation of chlorinated organic pesticides was isolated from many agricultural soil and contaminated water. After purification the strains were assessed in order to discover their ability to degrade (COP) (α propachlor) with concentration of 25mg/L as carbon source in mineral medium and in rich medium. However, the best three pure strains were able to grow in M.M includes (COP) without enrichment. This group which was composed of three isolates characterized based on their morphological and biochemical characteristic. The isolates were presumptively identified as rhodococcus spp. and Streptomyces albus. Using growth curve as a parameter of (COP) compounds, optimum conditions (Pesticide concentration, temperature, and time) of selected degrading bacterial strains were studied. Results indicated that the optimal temperature was 37°C for all isolates, with best growth at 100mg/L of propachlor by str. albus, in addition of its efficiency to degrade the compound during 48 hr at incubation.

Iman Gatea hasn't uploaded this paper.

Let Iman know you want this paper to be uploaded.

Ask for this paper to be uploaded.