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dc.contributor.authorZhang, Liang Liang
dc.contributor.authorLin, Yi Ming
dc.contributor.author林益明
dc.date.accessioned2011-12-06T01:25:28Z
dc.date.available2011-12-06T01:25:28Z
dc.date.issued2009
dc.identifier.citationAfrican Journal of Biotechnology Vol. 8 (10), pp. 2301–2309, 18 May 2009zh_CN
dc.identifier.issn1684-5315
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/11312
dc.description.abstractHydrolysable and condensed tannins in the fruit of Syzygium cumini were identified using NMR, MALDI-TOF MS and HPLC analyses. Hydrolysable tannins were identified as ellagitannins, consisting of a glucose core surrounded by gallic acid and ellagic acid units. Condensed tannins were identified as B-type oligomers of epiafzelechin (propelargonidin) with a degree of polymerization up to eleven. The antioxidant activity were measured by two vitro models: 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity and ferric reducing/antioxidant power (FRAP). Tannins extracted from S. cumini fruit showed a very good DPPH radical scavenging activity and ferric reducing/antioxidant power. The results are promising thus indicating the utilization of the fruit of S. cumini as a significant source of natural antioxidants.zh_CN
dc.description.sponsorshipNational Natural Science Foundation of China [30671646]; Program for New Century Excellent Talents in University [NCET-07-0725]; Program for Innovative Research Team in Science and Technology in Fujian Province Universityzh_CN
dc.language.isoenzh_CN
dc.publisherACADEMIC JOURNALSzh_CN
dc.subjectSyzygium cuminizh_CN
dc.subjecttanninszh_CN
dc.subjectantioxidant activityzh_CN
dc.subjectMALDI-TOF MSzh_CN
dc.subjectHPLCzh_CN
dc.titleAntioxidant tannins from Syzygium cumini fruitzh_CN
dc.typeArticlezh_CN


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