Objective To evaluate the effects of different extraction methods on yield, antioxidant activity and the relationship between the yield and antioxidant activity of blueberry pigments. Methods The blueberry pigments were extracted by conventional solvent extraction, ultrasound-assisted extraction or micro-wave-assisted extraction with ethanol, methanol or acetone as solvent extraction and its yields and scavenging capacities to DPPH?, ?O? and ?OH were determined. Results The yields of blueberry pigments extracted with ethanol, methanol or acetone were very similar (P>0.05), but the yields and scavenging capacities to DPPH?, ?O? and ?OH of blueberry pigments extracted by conventional solvent extraction, ultrasound-assisted extraction or microwave-assisted extraction were significantly different (P<0.05). There were significant positive correlations between the yields and scavenging capacities to DPPH? and ?OH of blueberry pigments, respectively (R=0.793, 0.944; P<0.05). Conclusion The yields and scavenging capacities of blueberry pigments obtained by different extraction methods with the same extraction solvent are significantly different. The yields are significantly correlated with scavenging capacities of DPPH? and ?OH. It will help to get blueberry pigments with higher yield and higher antioxidant activity by ultrasonic assisted ethanol extraction.
标题：不同提取方法对蓝莓色素得率及抗氧化活力的 影响研究
英文标题：Effects of extraction methods on yield and antioxidant capacity of blueberry pigments
