Antioxidant and antityrosinase proanthocyanidins from Polyalthia longifolia leaves

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	Antioxidant and antityrosinase proanthocyanidins from Polyalthia longifolia leaves
	Chen, Xiao-Xin ; Liang, Ge ; Chai, Wei-Ming ; Feng, Hui-Ling ; Zhou, Han-Tao ; Shi, Yan ; Chen, Qing-Xi ; Zhou HT(周涵韬) ; Shi Y(石艳) ; Chen QX(陈清西)
刊名	http://dx.doi.org/10.1016/j.jbiosc.2014.04.015
	2014
关键词	Antioxidants High performance liquid chromatography Mass spectrometry Organic acids
英文摘要	In the present study the structure of proanthocyanidins from Polyalthia longifolia leaves was characterized with 13C nuclear magnetic resonance, high performance liquid chromatography electrospray ionization mass spectrometry, and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry analyses. The results showed that the proanthocyanidins were mixture of homopolymers of B-type procyanidins with degree of polymerization up to 14-mer. Furthermore, the antioxidant activity of the proanthocyanidins was studied through 2,2-diphenyl-1-picrylhydrazyl and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) free-radical scavenging activities, and ferric reducing/antioxidant power assays. In addition, antityrosinase activity of the proanthocyanidins was investigated. The IC 50 for 2,2-diphenyl-1-picrylhydrazyl and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) free-radical scavenging activity of the proanthocyanidins were 89.32?±?12.07 and 76.79?±?5.88?μg/mL, respectively; the ferric reducing/antioxidant power value was 710.54?±?142.82?mg ascorbic acid equivalent/g dry weight. The IC 50 for antityrosinase activity was 773.09?±?1.47?μg/mL. In conclusion, the proanthocyanidins from P.?longifolia leaves exhibited potent antioxidant and antityrosinase activities. This research would provide scientific evidence for the use of proanthocyanidins from P.?longifolia leaves as antioxidant and antityrosinase agents. ? 2014 The Society for Biotechnology, Japan.
语种	英语
出版者	The Society for Biotechnology, Japan.
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/88251]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Chen, Xiao-Xin,Liang, Ge,Chai, Wei-Ming,et al. Antioxidant and antityrosinase proanthocyanidins from Polyalthia longifolia leaves[J]. http://dx.doi.org/10.1016/j.jbiosc.2014.04.015,2014.
APA	Chen, Xiao-Xin.,Liang, Ge.,Chai, Wei-Ming.,Feng, Hui-Ling.,Zhou, Han-Tao.,...&陈清西.(2014).Antioxidant and antityrosinase proanthocyanidins from Polyalthia longifolia leaves.http://dx.doi.org/10.1016/j.jbiosc.2014.04.015.
MLA	Chen, Xiao-Xin,et al."Antioxidant and antityrosinase proanthocyanidins from Polyalthia longifolia leaves".http://dx.doi.org/10.1016/j.jbiosc.2014.04.015 (2014).