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为研究亚临界萃取杏仁油的最佳工艺参数,选择杏仁为原料,研究萃取时间、萃取温度、料液比和萃取次数对杏仁油出油率的影响,并对提取的油脂的成分进行GC-MS。结果表明,亚临界萃取杏仁油的最佳工艺参数为:萃取时间28 min,萃取温度40℃,料液比1∶5(g/mL),萃取3次,在此条件下,出油率达51.7%±0.6%;GC-MS分析表明,亚临界萃取的杏仁油不饱和脂肪酸含量达到91.3%,其中油酸质量分数68.5%、亚油酸质量分数22.8%。因此,采用亚临界萃取杏仁油是一种萃取高质量杏仁油的适宜的方法。
In order to study the optimum technological parameters of almond oil extracted by subcritical, almonds were selected as raw materials to study the effects of extraction time, extraction temperature, solid-liquid ratio and extraction times on the extraction rate of almond oil. GC- MS. The results showed that the optimum extraction parameters of almond oil were as follows: the extraction time was 28 min, the extraction temperature was 40 ℃, the ratio of solid to liquid was 1: 5 (g / mL) 51.7% ± 0.6%. GC-MS analysis showed that the content of unsaturated fatty acids in almond oil extracted by subcritical extraction reached 91.3%, of which the content of oleic acid was 68.5% and the content of linoleic acid was 22.8%. Therefore, the use of subcritical extraction of almond oil is a suitable method for extracting high quality almond oil.