CAJ | 학술논문

本试验旨在采用超临界二氧化碳流体对杏仁油进行萃取。通过七因素二水平正交试验并对其结果进行单指标直观分析发现：浸泡时间短的出油率较高；粉度越小，出油率越高；以1∶1搀和二氧化硅粉与杏仁的出油率较1.5∶1的为高；20MPa压力的出油率较8MPa的略高等，在此基础上筛选出了最佳工艺路线。尔后对上述结果进行了六因素无交互作用方差分析，结果表明仅有浸泡时间对出油率的影响是显著的，浸泡的时间越短出油率越高，其余条件对出油率的影响并不显著，按其影响程度从大到小依次为粒度、二氧化硅与杏仁比例、压力、杏仁种类、流速。这与直观分析极差所示结果一致。最后液相色谱法测定显示萃取出的杏仁油中95.41％的脂肪酸为不饱和脂肪酸。
본시험지재채용초림계이양화탄류체대행인유진행췌취。통과칠인소이수평정교시험병대기결과진행단지표직관분석발현：침포시간단적출유솔교고；분도월소，출유솔월고；이1∶1참화이양화규분여행인적출유솔교1.5∶1적위고；20MPa압력적출유솔교8MPa적략고등，재차기출상사선출료최가공예로선。이후대상술결과진행료륙인소무교호작용방차분석，결과표명부유침포시간대출유솔적영향시현저적，침포적시간월단출유솔월고，기여조건대출유솔적영향병불현저，안기영향정도종대도소의차위립도、이양화규여행인비례、압력、행인충류、류속。저여직관분석겁차소시결과일치。최후액상색보법측정현시췌취출적행인유중95.41％적지방산위불포화지방산。
The study aims at extracting almond oil by supercritical CO2.27 factorial design was employed to screen the optimum processes to increase almond oil extracting rate.The Yates algorithm analysis result indicated that almond with soaking shorter time produced higher yield;the finer the almond was crushed,the higher yield the oil extracted;mixing SiO2 powder with almond at ratio 1∶ 1 produced higher yield than that at 1.5∶ 1 ratio etc.Analysis of variance (ANOVA) result indicated that the only factor,which significantly contributed to the oil extracting rate,is soaking time.At last HPLC analysis showed that almond oil extracted by supercritical CO2 is composed of 95.41％ unsaturated fatty acids.