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Chemical compositions and bioactivities of crude polysaccharides from tea leaves beyond their useful date
Xiao J.; Huo J.; Jiang H.; Yang F.
2011-12-01
Source PublicationInternational Journal of Biological Macromolecules
ISSN01418130 18790003
Volume49Issue:5Pages:1143-1151
Abstract

The chemical compositions and bioactivities of crude tea polysaccharides (TPS) from the out-of-date tea leaves (beyond their useful date), namely Xihu Longjing (XTPS), Anxi Tieguanyin (TTPS), Chawentianxia (CTPS) and Huizhoulvcha (HTPS), in market were investigated. These TPS showed similar neutral sugar content and different distribution of molecular weight (1-800. kD). These crude TPS were mainly composed of rhamnose, arabinose, galactose, glucose, xylose, mannose, and galacturonic acid. IR spectra confirmed that these crude TPS were composed of polysaccharide, protein and uronic acids. These TPS showed similar DPPH scavenging activity and exhibited lower DPPH scavenging activities than Vc within 25-200 μg/mL. However, these TPS with higher concentrations (200-400 μg/mL) showed similar DPPH scavenging activity with Vc. HTPS exhibited significant higher superoxide anion scavenging activity than others TPS and gallic acid. XTPS showed significant higher inhibitory effects on α-glucosidase and α-amylase with inhibitory percentages of 64.35% and 82.24% than others TPS. TTPS, XTPS, and HTPS exhibited similar inhibition ability on α- d-glucosidase and α-amylase. The overdue tea leaves can be a resource of tea polysaccharides as function food. 

KeywordAntioxidant Activity Camellia Sinensis Crude Polysaccharides Free Radical Scavenging Activity Tea Leaves Beyond Their Useful Date
DOI10.1016/j.ijbiomac.2011.09.013
URLView the original
Indexed BySCIE
Language英语
WOS Research AreaBiochemistry & Molecular Biology ; Chemistry ; Polymer Science
WOS SubjectBiochemistry & Molecular Biology ; Chemistry, Applied ; Polymer Science
WOS IDWOS:000296937200043
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Cited Times [WOS]:58   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionInstitute of Chinese Medical Sciences
AffiliationShanghai Normal University
Recommended Citation
GB/T 7714
Xiao J.,Huo J.,Jiang H.,et al. Chemical compositions and bioactivities of crude polysaccharides from tea leaves beyond their useful date[J]. International Journal of Biological Macromolecules,2011,49(5):1143-1151.
APA Xiao J.,Huo J.,Jiang H.,&Yang F..(2011).Chemical compositions and bioactivities of crude polysaccharides from tea leaves beyond their useful date.International Journal of Biological Macromolecules,49(5),1143-1151.
MLA Xiao J.,et al."Chemical compositions and bioactivities of crude polysaccharides from tea leaves beyond their useful date".International Journal of Biological Macromolecules 49.5(2011):1143-1151.
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