超声波辅助乙醇提取平欧杂交榛榛子油工艺优化

本研究以杂交品系平欧杂交榛为试验材料,利用超声波辅助无水乙醇提取榛子油,在单因素实验基础上,选择液料比、提取温度和提取时间为自变量,以榛子油提取率为响应值,采用二次回归旋转设计优化实验条件,利用气相色谱法分析榛子油中脂肪酸组成。结果表明:以无水乙醇为提取溶剂,榛子粉过20目筛,液料比17:1 mL/g,提取温度66℃,提取时间64 min,提取率可达58.99%,GC分析榛子油脂肪酸组成显示:榛子油的脂肪酸主要以不饱和脂肪酸为主,占脂肪酸总量的96%以上,其中尤以油酸为主,含量高达82.59%,亚油酸含量为12.58%。超声波辅助提取榛子油是一种有效的榛子油脂提取方法,具有实际应用价值。

Optimization of Ultrasonic Assisted Ethanol Extraction Process for Hybrid Hazelnut Oil

In this study,a new hybrid hazelnut variety Pingou hybrid hazel was used as experimental material to extract hazelnut oil with ultrasonic assisted anhydrous ethanol. On the basis of single factor test,the liquid to solid ratio,the extraction temperature and the extraction time were selected as the independent variables,and the extraction rate of the hazelnut oil was the response value. The experimental conditions were optimized by the quadratic regression rotary design. The composition of the fatty acid in the hazelnut oil was analyzed by gas chromatography. The results showed that the extraction rate of hazelnut powder was 58.99% with anhydrous ethanol as the solvent,hazelnut powder through 20 mesh sieve,the ratio of liquid to solid was 17:1 mL/g,the extraction temperature was 66℃,and the extraction time was 64 min. GC analysis of the fatty acid composition showed that,the fatty acids of hazelnut oil were mainly unsaturated fatty acids,accounting for more than 96% of the total fatty acids,especially oleic acid,which was as high as 82.59%,and linoleic acid was 12.58%.Ultrasonic assisted extraction of hazelnut oil is an effective method for extracting hazelnut oil,which has practical application value.