沙田柚柚子籽油提取工艺优化及性质研究

以沙田柚柚子籽为原料,通过超声波辅助溶剂法提取沙田柚柚子籽油。以柚子籽油的得率为评价指标,在单因素的基础上,选取超声温度、超声时间和料液比进行Box-Behnken响应面法试验设计,对其提取工艺参数进行优化。结果表明:超声波辅助溶剂法提取沙田柚柚子籽油的最佳工艺条件为料液比1∶8 g/mL,超声温度41℃,超声时间38.6 min,该条件下沙田柚柚子籽油得率为33.1%。沙田柚柚子籽油的脂肪酸主要由棕榈酸、油酸、亚油酸、亚麻酸和硬脂酸组成。沙田柚柚子籽油颜色较浅,密度为0.917 g/mL,碘值为103.5 g I_2/100 g,属于半干性油脂。

Extraction Technology Optimization of Shatian Pomelo Seed Oil and ItsProperties

With Shantian pomelo seeds as investigated object, the pomelo seed oil was extracted by ultrasonic-assisted solvent extraction method. On the basis of single-factor experiments, the ratio of liquid to material, ultrasonic temperature and ultrasonic extraction time were optimized by Box-Benhnken center-united experiment design coupled with response surface methodology, with yield of Shantian pomelo seed oil as evaluation index. The results showed that the appropaiate process parameters for Shantian pomelo seed oil extraction were sample ratio/solvent 1:8 g/mL, ultrasonic temperature 41 oC, ultrasonic time 38.6 min. Under these conditions, the extraction yield of Shantian pomelo seed oil was 33.1%. The main composition of Shantian pomelo seed oil were palmitic acid, oleic acid, linoleic acid, linolenic acid and stearic acid. AccordingStoStheSanalysisSof Shantian pomelo seed oil, theSrelativeSdensitySwasS0.917 g/mL, the iodineSvalue 103.5 g I₂/100g andSitSbelongedSto semi-drySoil.