哈密瓜籽油的超临界CO_2萃取及抗氧化性研究  

Supercritical CO_2 extraction and antioxidant activity of Hami melon seed oil

作　　者：姚宇博[1] 胡小松[1] 孙志健[1] 吴继红[1] 

机构地区：[1]中国农业大学食品科学与营养工程学院,农业部果蔬加工重点开放实验室,中国农业大学国家果蔬加工工程技术研究中心,北京100083

出　　处：《中国油脂》2012年第9期15-18,共4页China Oils and Fats

摘　　要：为了进一步提高哈密瓜籽资源的综合利用价值,推动哈密瓜产业的发展,探索了超临界CO2技术萃取哈密瓜籽油的工艺条件。通过单因素实验研究了萃取压力、萃取温度、出口温度、萃取时间和物料粒径对萃取率的影响,确定了超临界CO2萃取哈密瓜籽油的最佳工艺条件:萃取压力35MPa,萃取温度40℃,出口温度50℃,萃取时间2.5 h,物料粒径20目。在此条件下,哈密瓜籽油的萃取率为(22.75±0.27)%。通过清除DPPH和ABTS自由基实验,证实了哈密瓜籽油具有一定的抗氧化活性。In order to improve the comprehensive value of Hami melon seed and promote the development of Hami melon industry, the supercritical CO2 extraction conditions of Hami melon seed oil were optimized by single - factor experiment. The effects of extraction pressure, extraction temperature, outlet tempera- ture, extraction time and material size on oil extraction rate were studied, and the optimal conditions were determined as follows： extraction pressure 35 MPa, extraction temperature 40 ℃, outlet temperature 50℃, extraction time 2.5 h and material size 20 meshes. Under the optimal conditions, the oil extraction rate was （22.75 ±0. 27） %. In addition, the antioxidant activity of Hami melon seed oil was confirmed through DPPH and ABTS free radical scavenging activity experiments.

关 键 词：哈密瓜籽油 超临界CO2萃取 抗氧化性 

分 类 号：TS225.1[轻工技术与工程—粮食、油脂及植物蛋白工程]