Chemical and functional properties of food lipids

Penteado, Marilene de Vuono Camargo

doi:10.1590/s1516-93322004000200019

Cited by 1 publication

(1 citation statement)

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“…There is no doubt that the dielectric constant (C²/(N•M²)) of a solvent is a convenient measure of polarity of a solvent (Milani et al, 2020). For example, compared with nonpolar organic solvents such as hexane (1.88 C²/(N•M²)), polar organic solvents including ethanol (24.5 C²/(N•M²)) are better for more consistent extraction of polar components (phospholipid and lipoproteins) from materials, and thus increase the extraction yield (Bauemler et al, 2016;Nichols et al, 2011).…”

Section: Extraction Yieldmentioning

confidence: 99%

Comparison of different solvents for extraction of oils from by‐products of shrimps Penaeus vannamei and Procambarus clarkia

Wang

Yin

et al. 2021

J. Food Process. Preserv.

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The effects of different extraction solvents on the extraction yield and chemical composition of oils from by-products of marine shrimp Penaeus vannamei (Pv) and freshwater shrimp Procambarus clarkia (Pc) were investigated. Our results indicated that the ethanol and n-hexane mixture (4:1, v/v) was suitable solvent for simultaneous extraction of phospholipid and nonpolar lipids. By contrast, the ethanol and n-hexane mixture (4:1, v/v) and single ethanol were suitable solvents for the extraction of polyunsaturated fatty acids-rich (36.10%-42.78% of total fatty acids for Pv and 23.57%-25.58% of total fatty acids for Pc) and phosphatidylcholine-rich (66.22-67.09 mol% of total phospholipids for Pv and 55.01-58.68 mol% of total phospholipids for Pc) oils, but acetone was suitable solvent for the extraction of astaxanthin-rich oil (436.19 μg/g oil for Pv and 799.27 μg/g oil for Pc). The findings will provide relevant information that can be used to improve the production of nutritional oils from shrimp by-products. Practical applicationsThis study provides a theoretical basis for creating proper extraction processing to recover nutritional oils from shrimp by-products. For example, the ethanol and n-hexane mixture (4:1, v/v) was a suitable solvent for simultaneous extraction of phospholipid and non-polar lipids. By contrast, both of the ethanol and n-hexane mixture (4:1, v/v) and single ethanol were suitable solvents for the extraction of polyunsaturated fatty acids (PUFA)-rich and phosphatidylcholine-rich oils, but acetone was a suitable solvent for the extraction of astaxanthin-rich oil. Therefore, the oils extracted from shrimp by-products are rich in phospholipid, PUFA, and astaxanthin, which may be used as new functional food ingredients.

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Section: Extraction Yieldmentioning

confidence: 99%