Document Detail


Antioxidant capacities and total phenolic contents increase with gamma irradiation in two types of malaysian honey.
MedLine Citation:
PMID:  21796076     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Two types of monofloral Malaysian honey (Gelam and Nenas) were analyzed to determine their antioxidant activities and total phenolic and flavonoid contents, with and without gamma irradiation. Our results showed that both types of honey can scavenge free radicals and exhibit high antioxidant-reducing power; however, Gelam honey exhibited higher antioxidant activity (p < 0.05) than Nenas honey, which is in good correlation (r = 0.9899) with its phenolic contents. Interestingly, we also noted that both irradiated honeys have higher antioxidant activities and total phenolic and flavonoid contents compared to nonirradiated honeys by Folin-Ciocalteu and UV-spectrophotometry methods, respectively. However, HPLC analysis for phenolic compounds showed insignificant increase between irradiated and nonirradiated honeys. The phenolic compounds such as: caffeic acid, chlorogenic acid, ellagic acid, p- coumaric acid, quercetin and hesperetin as indicated by HPLC method were found to be higher in Gelam honey versus Nenas honey. In conclusion, irradiation of honey causes enhanced antioxidant activities and flavonoid compounds.
Authors:
Saba Zuhair Hussein; Kamaruddin Mohd Yusoff; Suzana Makpol; Yasmin Anum Mohd Yusof
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Publication Detail:
Type:  Journal Article     Date:  2011-07-27
Journal Detail:
Title:  Molecules (Basel, Switzerland)     Volume:  16     ISSN:  1420-3049     ISO Abbreviation:  Molecules     Publication Date:  2011  
Date Detail:
Created Date:  2011-07-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100964009     Medline TA:  Molecules     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  6378-95     Citation Subset:  IM    
Affiliation:
Department of Biochemistry, Faculty of Medicine, University Kebangsaan Malaysia, 50300 Kuala Lumpur, Malaysia. anum@medic.ukm.my.
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