Publication Type : Journal Article
Publisher : Chemosphere
Source : Chemosphere, Volume 270, p.129474 (2021)
Url : https://www.scopus.com/inward/record.uri?eid=2-s2.0-85099156400&doi=10.1016%2fj.chemosphere.2020.129474&partnerID=40&md5=2f18bb7f5ca17ca43ca54f12ee012e0a
Keywords : DDT, degradation, GC-MS, Glucose, Yeast extract
Campus : Mysuru
School : School of Arts and Sciences
Department : Sciences
Year : 2021
Abstract : The marine bacterium able to consume DDT as the nutrient source was isolated from sea water which was identified as Paracoccus sp. DDT-21 based on 16 S rDNA gene sequence and Gram negative rod, obligate aerobic, non-motile biochemical characteristics. The isolate can degrade over 80% of the DDT, at a concentration of 50 mg/L in MSM in 72 h. Time and pollutant (DDT) dependent growth studies indicated that the isolate Paracoccus sp., DDT-21 significantly degrade the DDT and tolerates under DDT stress up to 50 mg/L. The DDT degradation capability of the strain Paracoccus sp. DDT-21 was found to be 5 ˃ 10 ˃ 15 ˃ 25 ˃ 50 mg/L DDT. The high concentrations (75 and 100 mg/L) of DDT showed significant decrease in DDT degradation. The optimal DDT degradation (∼90.0%) was observed at 6 g/L of yeast extract, 6% of glucose in pH 7.0 at 35 °C with 72 h of incubation as constant. Furthermore, four metabolites were observed by GC-MS analysis such as, DDE, DDD, DDMU, and DDA. The obtained results indicate that the isolate Paracoccus sp. DDT-21 is a promising candidate for the removal and/or detoxification of DDT in the environment.
Cite this Research Publication : S. Al-Rashed, Marraiki, N., Syed, A., Elgorban, A. M., Shiva Prasad Kollur, Shivamallu, C., and Bahkali, A. H., “Bioremediation characteristics, influencing factors of dichlorodiphenyltrichloroethane (DDT) removal by using non-indigenous Paracoccus sp.”, Chemosphere, vol. 270, p. 129474, 2021.