翅碱蓬籽油脂提取工艺优化及理化性质测定

以沧州沿海地区盐地翅碱蓬籽为原料,以石油醚(60~90℃)为提取剂,以提油率为指标,采用浸出法提取翅碱蓬籽油。利用正交实验法和响应面法对颗粒度、液料比、提取时间进行优化,并对两种方法进行了双样本T检验,结果表明两种实验方法的最佳工艺条件下提油率差异不显著。正交实验优化的最佳工艺条件为:颗粒度100目、液料比20:1(mL:g)、提取时间150 min,此时提油率平均达到25.13%。响应面法优化后的最佳工艺参数为:颗粒度100目、液料比21:1(mL:g)、提取时间128 min,此时提油率平均可达到25.12%。对响应面最佳条件下得到的翅碱蓬籽油进行理化性质分析,检测结果为:皂化值199.09 mg KOH/g,碘值141.58 g I/100 g,酸值2.00 mg KOH/g,过氧化值2.53 mmol/kg,均符合食用油标准,具备开发为高级保健食用油的条件。研究结果为翅碱蓬的进一步开发利用提供了理论依据。

Optimization of Solvent Extraction Process of Edible Oil from Saline Seepweed Seeds and Evaluation of Physicochemical Properties

The Suaeda seeds Oil was extracted from Suaeda Seeds in Cangzhou coastal. Solvent extraction method was used,with petroleum ether(60~90℃)as the extraction agent,oil extraction rate as index. The particle size,liquid-soild ratio and extraction time were optimized by the orthogonal test and the response surface method. The independent T test was performed on the above two methods. The results showed that the oil extraction rate difference was not significant in the optimum process of the two experimental methods. The optimum process parameters for orthogonal test optimization were as follows:particle size of 100 mesh,liquid-soild ratio of 20:1 (mL:g)and extraction time of 150 min. Under the optimized conditions,the yield of Suaeda seeds oil was 25.13%. The optimum process parameters for the response surface method were as follows:particle size of 100 mesh,liquid-soild ratio of 21:1 (mL:g)and extraction time of 128 min. Under the optimized conditions,the yield of Suaeda seeds oil was 25.12%. The physicochemical properties of Suaeda seeds oil were analyzed. The results were as follows:the saponification value of 199.09 mg KOH/g,the iodine value of 141.58 g I/100 g,the acid value of 2.00 mg KOH/g and the peroxide value of 2.53 mmol/kg,all these were in line with the standard of edible vegetable oil. It proved that the Suaeda seeds oil could be used to develop the health edible oil. The results provided a theoretical basis for the further exploitation and utilization of Suaeda salsa.