Identification compounds and antioxidant activities of honeycomb polyphenol extracts

The compounds of aqueous extracts and ethanol extracts from honeycomb were identified and the antioxidant activity was studied. By GC-MS techniques, 17 compounds of two extracts were analysised respectively. And the total antioxidant capacity, clearing DPPH·, OH·, ABTS+·and O2-·free radical of two kinds of extracts were compared, the results showed that aqueous extracts and ethanol extracts both had strong antioxidant activities, as well as synthetic chemical antioxidants BHT, the antioxidant activities increased with polyphenol concentration, when the concentration of polyphenol reached a certain value, the clearing rate was almost constant and the aqueous extracts' s antioxidant activities was better than ethanol extracts', which suggested that the honeycomb polyphenol extracts was an excellent natural antioxidant and free radicals scavenger.