顶空吸附法在沙枣花精油提取中的应用研究.doc
顶空吸附法在沙枣花精油提取中的应用 摘 要：目的 寻找沙枣花精油提取产率高，成本较低的方法，应用顶 空吸附法对其精油的提取效果进行研究，为沙枣花的开发利用做一参 考。方法根据顶空吸附法原理，采用自制的实验装置，选用活性炭、 犬孔树脂作为吸附剂，石油瞇、正己烷作为洗脱剂提取沙枣花精油， 与水蒸气蒸徭法进行提取产率的对比，通过GC （Gas chromatography 气相色谱法）鉴定精油主香成分一肉桂酸乙酯及其含量，确定最佳提 取效果。结果 顶空吸附法提取的沙枣花精油主香成分是肉桂酸乙酯; 犬孔树脂作为吸附剂，正己烷作为洗脱剂时，精油提取产率为1.5%, 肉桂酸乙酯的相对含量最高；活性炭作为吸附剂，石油醯作为洗脱剂 时，300目活性炭产率为1.0%高于150目活性炭，其产率为0. 8%,且300 目活性炭作为吸附剂肉桂酸乙酯的相对含量高于150目活性炭；顶空 吸附法提取效果优于水蒸汽蒸徭法，其产率为0. 25%O结论顶空吸附 法可用于沙枣花精油提取，选大孔树脂作为吸附剂，精油提取产率优 于活性炭，且此方法效果优于水蒸气蒸徭法，成本较超临界CO?萃取 法低，性价比较高。 关键词：顶空吸附法；沙枣花；精油；提取率 The appIi cat i on about the head-space absorption method on extracting the essential oils of EIaeagnus angustifolia. blossom Abstract:Objective To study the method that the yield shouId be h i gher a nd the cost lower, the HAS (head-space absorpti on )was used to extract the essential oils of the EIaeagnusan gustifolia L Method With the theory of the HAS being the basis,a device was designed by ourseIves to extract the essent i a I oils with the active carbon and the macroporous as adsorbe nt. C ompared contents of the esse ntial oils ext rac ted by the SD(steam disti Ilation)with the HAS, the GC(Gas chromatography)was used to identify the qua Iity. Resu11 With the method of the HAS,the main constituents of the essential oils be i ng extracted was the ethyI phenyI aery I ate. The yield of it being extracted by the macroporous resin was 1.5%, 150 mesh carbon as adsorbent 0.8%,the 300 mesh carbon as adsorbentl .0%, wh iIe the yield extracted by the SD (stearn d i stil I at i on) was 0. 25%— the I east of the all. Cone I us i on The method of the HAS couId be used to extract essential oils of the E / aeagnus angusti folia L. The effect of new met hod with the advantage over the SD and the supercr itical C02 extract ion which cost more? Key words : Head-space absorpti on method; Elaeag nus an gust i fol ia L ?；the yield of the essential oils 沙枣(￡laeagnus angusti folia厶?)是胡颓子科植物，沙枣树抗 风沙、耐盐碱、耐干旱、易繁殖，适应性强而成为沙荒地、盐碱地造 林的优良树种，在我国集中分布在西北荒漠半荒漠地区，是重要的防 沙治沙植物。沙枣花银黄色，钟形，长5 mm左
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