2018_2019学年高中生物专题6课题1植物芳香油的提取课件新人教版选修1.ppt

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适用范围广,要求原料的颗粒要尽可能细小,能充分浸泡在有机溶剂中,适用于柑橘、柠檬等原料易焦糊芳香油的提取,适用于提取玫瑰油、薄荷油等挥发性强的芳香油,适用范围,使芳香油溶解在有机溶剂中,蒸发溶剂后就可获得芳香油,通过机械加压,压榨出果皮中的芳香油,利用水蒸气将挥发性较强的植物芳香油携带出来,实验原理,萃取法,压榨法,水蒸气蒸馏法,提取方法,使用有机溶剂处理不当会影响提取物的质量,分离较为困难,出油率相对较低,水中蒸馏会导致某些原料焦糊和有效成分水解,局 限 性,产率高,易分离,生产成本低,易保持原料原来的结构和功能,简单易行,便于分离,优点,粉碎、干燥萃取、过滤浓缩,石灰水浸泡、漂洗压榨、过滤、静置再次过滤,水蒸气蒸馏分离油层 除水过滤,方法步骤,萃取法,压榨法,水蒸气蒸馏法,提取方法,

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