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作 者:伍钢[1] 彭密军[1] 彭爱华 彭胜[1] 旷勇[1]
机构地区:[1]吉首大学林产化工工程湖南省重点实验室,湖南张家界427000 [2]湘潭县雁坪中学,湖南湘潭411213
出 处:《生物质化学工程》2009年第5期26-30,共5页Biomass Chemical Engineering
基 金:湖南省教育厅重点项目(08AO56);张家界市科技局攻关项目(2008031)
摘 要:在微波和超声波作用下用饱和氢氧化钙澄清液提取桔皮,以橙皮苷的得率和提取率为评价指标,通过单因素及正交试验,分别得到微波和超声波的最佳提取工艺并进行比较。结果表明超声波提取优于微波提取,其中超声波提取的最佳条件为:提取温度20℃,提取时间70 m in,液料比30∶1。在此条件下,橙皮苷的得率达到5.28%,提取率达到78.43%,与常规提取相比,得率增加4倍,提取率增加58.21个百分点,且放大实验结果比较稳定。Orange peel was extracted by saturated calcium hydroxide solution through microwave-assisted extraction or ultrasonic extraction. The yield and extraction rate of hesperidin were used to evaluate the effect of tests. The optimum extraction conditions of microwave-assisted and ultrasound method were obtained and compared by single factor test and orthogonal test. The results showed that the ultrasonic extraction method is superior to microwave-assisted extraction method, and the optimum extraction conditions of ultrasonic were as follows : extraction temperature 20 ℃, extraction time 70 min, liquid-solid ratio 30 : 1. Compared with conventional extraction, the yield of hesperidin reached to 5.28 %, increased four times, and the extraction rate of hesperidin reached to 78.43 %, enchanced 58.21 percentage point, the results of larger experiment is relatively stable by ultrasonic extraction.
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