超声辅助提取冬瓜籽油工艺的研究_吴少福 . Study on Ultrasonic Assistant Extraction Technique of Wax Gourd's Seed Oil

Abstract

The ultrasonic assistant extraction technique of wax gourd's seed oil was studied with wax gourd's seeds as raw material.The single factors affecting the extraction of wax gourd's seed oil were ultrasonic time,ultrasonic temperature,solid-liquid ratio as well as ultrasound power.The L9(34) orthogonal test was designed with these factors,and the optimal extraction conditions were as follows:ultrasonic time 40min;ultrasonic temperature 60 ℃;solid-liquid ratio 1:12 and ultrasound power 120 W.Under the optimal condition,the extraction rate was 88.55%.The composition and contents of fatty acid in wax gourd's seeds were determined by GC-MS.Results showed that linoleic acid(45.17%),palmitic acid(32.09%).stearic acid(16.45%),oleic acid(4.99%) and arachidic acid(0.36%).The compounds with the highest contents in the wax gourd's seeds were linoleic acid,accounting for 45.17%.