响应曲面优化超声辅助提取山茱萸籽油工艺及其成分分析_刘瑞林 . Optimization of Ultrasound-Assisted Extraction of Cornus officinalis Seed Oil by Response Surface Methodology and Chemical Composition Analysis

Abstract

Response surface methdology was employed to optimize the ultrasound-assisted extraction of Cornus officinalis seed oil.Meanwhile,its chemical composition was analyzed by GC-MS.The optimal extraction conditions were determined as 40 ℃ of extracion temperatrure,40 min of extraction time,and 10:1 of liquid-to-solid raio(mL/g).Under these conditions,the extraction yield of Cornus officinalis seed oil based on the dry weight of Cornus officinalis kernels was 7.90%,accounting for 97.08% of that obtained from Soxhlet extraction.The predominant fatty acids in Cornus officinalis seed oil were oleic acid(61.89%),stearic acid(19.99%),palmitic acid(7.63%),linoleic acids(6.33%),and so on.The percentage of unsaturated fatty acids relative to total fatty acids was 69.45%.In addition,the vitamin E content in Cornus officinalis seed oil,as determined by HPLC,was 76.0 mg/100 g.