UM
Structural characterization, α-glucosidase inhibitory and DPPH scavenging activities of polysaccharides from guava
Zhang Z.; Kong F.; Ni H.; Mo Z.; Wan J.-B.; Hua D.; Yan C.
2016
Source PublicationCarbohydrate Polymers
ISSN1448617
Volume144Pages:106
AbstractTo explore the chemicals responsible for the health benefits of guava, water-soluble polysaccharides were extracted including GP90 and P90. They exhibited excellent α-glucosidase inhibition activity with an EC50 of 2.27 μg/mL and 0.18 mg/mL. This suggests that their activities were 1379- and 17-fold higher than the positive control. The DPPH scavenging activities of GP90 was even higher than Vc at some concentrations. Upon further isolation, a novel polysaccharide termed GB90-1B was obtained. Monosaccharide analysis, methylation analysis, and NMR were used to analyze the structural characterization of GB90-1B. Structural analysis revealed that its backbone consisted of (1→5)-linked-α-l-arabinose, (1→2,3,5)-linked-α-l-arabinose and (1→3)-linked-α-l-arabinose. Branch linkages included (1→6)-linked-α-d-glucose, (1→)-linked-α-d-glucose and (1→)-linked-α-l-arabinose. The structure of the repeating unit of GP90-1B was predicted. © 2016 Elsevier Ltd. All rights reserved.
KeywordDPPH scavenging activity Guava Polysaccharides Psidium guajava Linn. Structure α-Glucosidase inhibition activity
DOI10.1016/j.carbpol.2016.02.030
URLView the original
Language英语
The Source to ArticleScopus
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Cited Times [WOS]:53   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
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GB/T 7714
Zhang Z.,Kong F.,Ni H.,et al. Structural characterization, α-glucosidase inhibitory and DPPH scavenging activities of polysaccharides from guava[J]. Carbohydrate Polymers,2016,144:106.
APA Zhang Z..,Kong F..,Ni H..,Mo Z..,Wan J.-B..,...&Yan C..(2016).Structural characterization, α-glucosidase inhibitory and DPPH scavenging activities of polysaccharides from guava.Carbohydrate Polymers,144,106.
MLA Zhang Z.,et al."Structural characterization, α-glucosidase inhibitory and DPPH scavenging activities of polysaccharides from guava".Carbohydrate Polymers 144(2016):106.
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