Chemical Constituents and Antioxidant Activities of Wood Vinegar from Pomegranate Husk
In order to explore a new approach to the utilization of pomegranate husk,wood vinegar was prepared by pyrolyzing pomegranate husk in the temperature range of 150-400 ℃C.Chemical constituents of the wood vinegar were analyzed by gas chromatography-mass spectrometry (GC-MS).Its antioxidant activities were evaluated by 1,1-diphenyl2-picryihydrazyl (DPPH) radical and hydroxyl radical scavenging methods.The results showed that the contents of total phenols,total ketones and organic acid in the wood vinegar were 10.92 mg/mL,7.81 mg/mL and 2.53％ respectively.A total of 27 compounds were detected by GC-MS analysis from the wood vinegar,mainly including phenols,organic acids,alcohols,alkanes,aldehydes and ketones.Its scavenging activities against DPPH and OH hydroxyl radicals were 10.22 μtg/mg and 45.19μg/mg VC equivalent,respectively.This study suggested that wood vinegar from pomegranate husk has the potential to be used as a natural antioxidant resource.
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维普
