Abstract：
The supercritical defatting of H. illucens was scaled up at 450 bar and 60 °C from a 270 cm3 extraction cell to a vessel five times larger. Then, eight different H. illucens larvae batches, with variable content of oil (16.80-29.17% w/w) and moisture (4.45-15.95% w/w) were defatted. The effect of these parameters on yield and oil composition was analyzed. The presence of moisture in the larvae batch, in the range of the values studied, had no negative effect on the oil recovery efficiency, which was mainly determined by the initial content of oil in the larvae samples. Furthermore, no differences were determined in the fatty acid profile of the oils recovered, which were rich in saturated fatty acids, mainly lauric acid (ca. 50% w/w). Minor lipids, such as squalene and phytosterols, were determined in all the oil samples. The moisture content in the oils extracted was in the range of 0.118-1.706% w/w. Therefore, some samples exceeded the limits recommended for volatile matter in edible fats and oils (0.2%, including moisture). Yet, concerning the oil peroxide index, values were much lower than those corresponding to the oil extracted using hexane.
摘要：
在450bar和60°C下，从270cm3的提取池放大到五倍大的容器中。然后，八个不同的H.illucens幼虫批次，用可变含量的油(16.80-29.17%w/w)和水分(4.45-15.95%w/w)脱脂。分析了这些参数对产率和油组成的影响。幼虫批次中水分的存在，在所研究的值范围内，对采油效率没有负面影响，这主要是由幼虫样品中的初始油含量决定的。此外，回收的油的脂肪酸谱没有差异，富含饱和脂肪酸，主要是月桂酸（约50%w/w)。少量脂质，如角鲨烯和植物甾醇，在所有的油样品中测定。提取的油中的水分含量在0.118-1.706%w/w的范围内。因此,一些样品超过了食用油脂中挥发性物质的建议限值(0.2%，包括水分)。然而，关于油过氧化物指数，值远低于使用己烷提取的油。
