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Phenolic profiles and antioxidant activity of litchi pulp of different cultivars cultivated in Southern China.
MedLine Citation:
PMID:  23194511     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The phenolic profiles and antioxidant activity of litchi pulp of 13 varieties were investigated. The free, bound and total phenolic contents were 66.17-226.03, 11.18-40.54, and 101.51-259.18mg of gallic acid equivalents/100g, respectively. The free, bound and total flavonoid contents were 16.68-110.33, 10.48-22.75, and 39.43-129.86mg of catechin equivalents/100g, respectively. Free phenolics and flavonoids contributed averagely 80.1% and 75% to their total contents, respectively. Six individual phenolics (gallic acid, chlorogenic acid, (+)-catechin, caffeic acid, (-)-epicatechin, and rutin) were detected in litchi pulp by HPLC. The contents of each compound in free and bound fractions were determined. Significant varietal discrepancy in antioxidant activity was also found by FRAP and DPPH scavenging capacity methods. Antioxidant activity was significantly correlated with phenolic and flavonoid contents. Thus, phenolics and flavonoids exist mainly in the free form in litchi pulp. There were significant varietal differences in phytochemical contents and antioxidant activity of litchi pulp.
Authors:
Ruifen Zhang; Qingshuai Zeng; Yuanyuan Deng; Mingwei Zhang; Zhencheng Wei; Yan Zhang; Xiaojun Tang
Publication Detail:
Type:  Journal Article     Date:  2012-10-02
Journal Detail:
Title:  Food chemistry     Volume:  136     ISSN:  0308-8146     ISO Abbreviation:  Food Chem     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2012-11-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7702639     Medline TA:  Food Chem     Country:  England    
Other Details:
Languages:  eng     Pagination:  1169-76     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
Bio-Technical Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510610, PR China.
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