一种植物油的高压萃取工艺及其应用

A high-pressure extraction technique and its application in seed oil

设计并建立一套适用于植物油萃取的高压工艺的实验装置。在温度为12~24℃、压力约6 MPa时,以高压液体二氧化碳对沾油布条的预萃取实验表明,该装置可以在萃取温度下40 min内将油从布条中几乎萃取完毕。在温度为25~40℃、压力为0.4~1.0 MPa下,采用液化气为萃取剂,考察该工艺对完整颗粒的黄豆和花生中植物油的萃取收率。常压条件下,考察了常规使用的正己烷溶剂于不同萃取温度下对完整颗粒的黄豆和花生中植物油的萃取收率的影响。比较2种萃取方式所得同种原料的对应植物油的萃取收率的结果表明:以正己烷为溶剂,常压萃取对豆油的萃取效果较好,萃取温度在正己烷沸点时效果最佳,豆油的萃取收率达2.88%;以液化气为溶剂,采用高压萃取方式对花生油的萃取效果较好,萃取温度在40℃时,花生油的萃取收率达4.91%。

An experimental apparatus for high-pressure extraction of seed oil was designed and established.At 14～24℃ and about 6 MPa the apparatus was applied to a model system:cloth adsorbed with oil;the extraction results showed the oil could be quickly extracted into liquid carbon dioxide within 40 min at different extraction temperature,indicating the availability of the technique.At 25～40℃ and 0.4～1.0 MPa the apparatus was employed to extract seed oil from unbroken soybean and peanut respectively by using liquefi...