超临界CO2萃取冷破碎苹果皮蜡质工艺优化及其成分分析
详细信息Optimization of extracting process of waxes from cold-break apple peel by supercritical CO2 and analysis of the composition
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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。Abstract: The extraction condition of waxes from cold-break apple peel by supercritical CO2 extraction technology was studied and the composition of apple waxes was analyzed by GC-MS.The optimum condition of supercritical CO2 were as follows:extraction pressure 35MPa, extraction temperature 50℃, raw material particle size>100 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.
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