Antioxidant activity of the pyroligneous acid from bayberry stones
Bayberry ( Myrica rubra Sieb. et Zucc. ) 9tones were used to prepare pyroligneous acid for the first time. Phenolics content, total reducing power, DPPH and ABTS free radical scavenging activity of the bayberry stone pyroligenous acid (PA) and its dichloromethane extraction (PAE) were investigated. Phenolics content in the raw PA and ethyl acetate extraction of PA was 28.25 and 412.54 mg/g,respectively. PAE showed good ferric reducing power and was approximately 1.3 times higher than that of Trolox at the same concentration. PAE exhibited superior DPPH and ABTS free radical scavenging activity. The half inhibitory content ( IC50 ) of PAE was lower than that of Trolox and higher than that of ascorbic acid (VC). The ferric reducing power, DPPH and ABTS free radical scavenging ability of PA and PAE showed good correlation with their total phenolic content.
国家科技期刊平台
NSTL
万方数据
维普
