Biodegradation of carbamazepine using freshwater microalgae Chlamydomonas mexicana and Scenedesmus obliquus and the determination of its metabolic fate

Title
Biodegradation of carbamazepine using freshwater microalgae Chlamydomonas mexicana and Scenedesmus obliquus and the determination of its metabolic fate
Authors
최재영Jiuqiang XiongMayur B. KuradeReda A.I. Abou-ShanabMin-Kyu JiJong Oh Kim전병훈
Keywords
Carbamazepine; Bioremediation; Biodegradation; C. mexicana; Emerging contaminants
Issue Date
2016-04
Publisher
Bioresource technology
Citation
VOL 4, NO 205, 183-190
Abstract
This study evaluated the toxicity and cellular stresses of carbamazepine (CBZ) on Chlamydomonas mexicana and Scenedesmus obliquus, and its biodegradation by both microalgal species. The growth of both microalgal species decreased with increase of CBZ concentration. The growth of S. obliquus was significantly inhibited (97%) at 200 mg CBZ L− 1, as compared to the control after 10 days; whereas, C. mexicana showed 30% inhibition at the same experimental conditions. Biochemical characteristics including total chlorophyll, carotenoid contents and enzyme activities (SOD and CAT) for both species were affected by CBZ at relatively high concentration. C. mexicana and S. obliquus could achieve a maximum of 35% and 28% biodegradation of CBZ, respectively. Two metabolites (10,11-dihydro-10,11-expoxycarbamazepine and n-hydroxy-CBZ) were identified by UPLC-MS, as a result of CBZ biodegradation by C. mexicana. This study demonstrated that C. mexicana was more tolerant to CBZ and could be used for treatment of CBZ contaminated wastewater.
URI
http://pubs.kist.re.kr/handle/201004/59231
ISSN
09608524
Appears in Collections:
KIST Publication > Article
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