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|Title:||Antioxidant Activity of Some Selected Freshwater Macrophytes|
|Keywords:||Antioxidant;cytotoxicity;freshwater submerged macrophytes;Nymphaea pubescens;Polygonum tomentosum|
|Publisher:||7th International Conference on Medical, Biological and Pharmaceutical Sciences (ICMBPS'2015)|
|Abstract:||Three freshwater submerged macrophytes including Hydrilla verticillata, Najas graminea, and Utricularia aurea, one floating-leaf emergent macrophyte, Nymphaea pubescens Willd., and one marginal emergent macrophyte, Polygonum tomentosum Willd.,from Bueng Boraphet wetland, central Thailand were studied for their antioxidant activities using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis (3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) assays. The 80% ethanolic, 80% methanolic, or 80% diethyl ether extracts of three submerged macrophytes showed low antioxidant activities comparing to those of emergent macrophytes,N. pubescens Willd. and P. tomentosum Willd. The ethanolic extracts of N. pubescens Willd. flowers and leaves and of P. tomentosum Willd. flowers and peduncles showed high antioxidant activities with low cytotoxicity based on 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The present studysuggests that N. pubescens Willd. and P. tomentosum Willd. are potential sources of natural antioxidants.|
|Appears in Collections:||Biology: International Proceedings|
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