AI Article Synopsis
- The supercritical defatting process was successfully scaled up to a larger vessel while maintaining conditions of 450 bar and 60 °C.
- Eight batches of larvae with varying oil and moisture content were processed, revealing that moisture did not negatively impact oil recovery, which depended more on initial oil content.
- The extracted oils were high in saturated fatty acids, especially lauric acid, and contained minor lipids like squalene and phytosterols, with some samples having moisture levels exceeding the recommended limits for edible fats and oils, but lower peroxide levels compared to hexane-extracted oils.
Article Abstract
The supercritical defatting of was scaled up at 450 bar and 60 °C from a 270 cm extraction cell to a vessel five times larger. Then, eight different 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.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9913976 | PMC |
| http://dx.doi.org/10.3390/foods12030490 | DOI Listing |
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