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Extraction of oil from grape seeds (Vitis vinifera L.) using recyclable CO2-expanded ethanol
Chemical Engineering and Processing: Process Intensification ( IF 3.8 ) Pub Date : 2020-09-19 , DOI: 10.1016/j.cep.2020.108147
Hongna Li , Xinyuan Fu , Gang Deng , Andreea David , Linjie Huang

A novel green solvent, CO2-expanded ethanol (CXE), was employed to extract oil from grape seeds, which is one of the main by-products generated by the grape-processing industry. The optimum extraction conditions were obtained by response surface methodology (RSM) coupled with Box-Behnken design (BBD): a pressure of 7.4 MPa, a temperature of 314 K and a CO2 mole fraction of 0.3. The highest oil yield of 13.6 % by CXE extraction was equivalent to or even higher than that obtained with conventional methods, including organic solvent and supercritical CO2 extraction. In terms of reducing solvent consumption and extraction time, the CXE-based process was superior than the conventional methods. CXE oil contained 87.5 % total unsaturated fatty acids, especially linoleic acid was up to 75.5 %, presenting a higher antioxidant capacity.



中文翻译:

使用可循环的CO 2膨胀乙醇从葡萄籽(Vitis vinifera L.)中提取油

一种新型的绿色溶剂,CO 2膨胀的乙醇(CXE),用于从葡萄籽中提取油,葡萄籽是葡萄加工工业产生的主要副产物之一。最佳萃取条件是通过响应表面方法(RSM)与Box-Behnken设计(BBD)结合获得的:压力为7.4 MPa,温度为314 K,CO 2摩尔分数为0.3。通过CXE萃取获得的最高油产率为13.6%,与甚至包括有机溶剂和超临界CO 2在内的常规方法所获得的产率相当甚至更高。萃取。在减少溶剂消耗和提取时间方面,基于CXE的方法优于常规方法。CXE油中总不饱和脂肪酸含量为87.5%,尤其是亚油酸高达75.5%,具有更高的抗氧化能力。

更新日期:2020-09-30
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