超声波辅助提取蓝莓果渣中花色苷的条件研究
Study on conditions of anthocyanins from blueberry pomace by ultrasonic-assisted extraction
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摘要: 以蓝莓果渣为原料,研究超声波辅助提取花色苷的工艺条件。结果表明最佳提取工艺条件为:超声波功率350W,提取温度45℃,提取时间50min,料液比1∶55g/mL,乙醇(pH=1.5)体积分数60%,提取2次。在此条件下进行提取,每克蓝莓果渣可提取花色苷(9.91±0.05)mg。与酸性乙醇浸提法比较,超声波辅助提取法提取时间短,提取量大。Abstract: The blueberry pomace was analyzed as the material to study the conditions of anthocyanins by ultrasonic-assisted extraction. Results showed that optimum extraction conditions were as follows:ultrasonic power 350W, extraction temperature 45℃, extraction time 50min, solid-liquid ratio 1∶55g/mL, ethanol (pH=1.5) volume fraction 60%, extraction 2 times. Under this conditions, (9.91 ±0.05) mg anthocyanins were extracted from one gram blueberry pomace. The method was time-saving and high extraction yield compared with acidethanol extraction.