Document Detail

Chemical compositions andantioxidant activities of water extract of Chinese propolis.
MedLine Citation:
PMID:  22026502     Owner:  NLM     Status:  Publisher    
In the present study, we have investigated the chemical composition and antioxidant activity of water extract of propolis (WEP) collected from 26 locations in China. Spectrophotometry was used to determine the physico-chemical properties and the chemical constituents of WEP. Phenolic compounds in WEP were identified by RP-HPLC-DAD with reference standards. The antioxidant activities [characterized by reducing power and 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging ability] of WEP were also measured. Results show that epicatechin, p-coumaric acid, morin, 3,4-dimethoxycinnamic acid, naringenin, ferulic acid, cinnamic acid, pinocembrin and chrysin are the major functional phenolic compounds in Chinese WEPs. Furthermore, most WEPs show strong antioxidant activities, which are significantly correlated with , an index for estimation of the quality of WEP. WEPs also contain many more active constituents than that of ethanol extracts of propolis.
Xia-Li Guo; Bin Chen; Luo Liping; Xi Zhang; Xi-Mo Dai; Shang-Ji Gong
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-10-25
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  -     ISSN:  1520-5118     ISO Abbreviation:  -     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-10-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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