超临界CO_2萃取冷破碎苹果皮蜡质工艺优化及其成分分析  

Optimization of extracting process of waxes from cold-break apple peel by supercritical CO_2 and analysis of the composition

作　　者：李卓[1] 郭玉蓉[1] 闫玉培[1] 

机构地区：[1]陕西师范大学食品工程与营养科学学院,陕西西安710062

出　　处：《食品工业科技》2012年第22期312-315,共4页Science and Technology of Food Industry

基　　金：现代苹果产业技术体系专项资金资助(CARS-28)

摘　　要：以冷破碎苹果皮渣为原料,研究超临界CO2萃取苹果皮蜡质的工艺条件,并用气相色谱-质谱联用技术(GC-MS)分析苹果皮蜡质的化学组成。结果表明:超临界CO2萃取苹果皮蜡质的最佳工艺条件为:萃取压力35MPa,萃取温度50℃,萃取时间1.5h,原料粒度>100目,该条件下萃取率为2.081%;用GC-MS检测到萃取物中36种化合物,其中主要成分是饱和烷烃和酯类,这两类物质的相对含量分别为41.44%和37.41%;其次,苹果皮蜡质还含有醇类、脂肪酸、酮类、β-谷甾醇、木栓酮等成分。The extraction condition of waxes from cold-break apple peel by supercritical CO_2 extraction technology was studied and the composition of apple waxes was analyzed by GC-MS.The optimum condition of supercritical CO_2 were as follows：extraction pressure 35MPa,extraction temperature 50℃,raw material particle size100 mesh,extraction time 1.5h.Under optimal conditions,the yield of apple waxes was 2.081%.36 compounds of apple waxes were detected.Main ingredients were hydrocarbons and esters which account for 41.44% and 37.41% respectively of all the detected compounds.Alcohols,fatty acids,ketones,β-sitosterol and friedelin were also detected.

关 键 词：超临界CO2萃取 蜡质 成分 GC-MS 

分 类 号：TS201.2[轻工技术与工程—食品科学]