Squid discards as a source of phospholipid- and tocopherol-concentrates by employment of non-halogenated solvents

IF 3 3区农林科学 Q2 FOOD SCIENCE & TECHNOLOGY

European Food Research and Technology Pub Date : 2024-12-06 DOI:10.1007/s00217-024-04634-5

Santiago P. Aubourg, Marcos Trigo, Mª Jesús González, Salomé Lois, Isabel Medina

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引用次数: 0

Abstract

This study focused on the preparation of phospholipid- and tocopherol-enriched concentrates from Patagonian squid (Doryteuthis gahi) discards. For it, non-halogenated solvents (hexane, HX; isopropanol, IP; ethanol, ET) were combined in one-step and two-step extracting systems and applied to this marine substrate. Total lipid, phospholipid (PL) and tocopherol values were determined and compared to those obtained by the conventional (chloroform/methanol) procedure. For one- and two-step strategies tested, non-halogenated solvents led to total lipid yields of ca. 65–79% compared to the conventional procedure; the two highest yields (p < 0.05) were obtained by the use of one-step HX/ET (2:1) and two-step HX/ET extractions. Regarding PL compounds, non-halogenated strategies led to a ca. 66–88% recovery compared to the conventional procedure. Notably, alcohol-containing solvent mixtures provided lipid fractions including higher average PL concentrations than the conventional procedure; thus, two-step HX/IP and HX/ET extractions led to significantly higher (p < 0.05) concentration values. In all lipid extracts, α-, γ- and δ-tocopherol compounds were detected, the first one being the most abundant. Two-step HX/IP and HX/ET extractions led to higher yields of α- and γ-tocopherol when compared to the conventional procedure. Remarkably, HX-containing mixtures provided lipid extracts including higher (p < 0.05) concentrations of α- and γ-tocopherol than the conventional procedure; concentration values were especially high if employing HX alone. Extractability differences are discussed and explained on the basis of the polar and non-polar characteristics of the solvents.

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来源期刊

European Food Research and Technology 工程技术-食品科技

CiteScore

6.60

自引率

3.00%

发文量

232

审稿时长

2.0 months

期刊介绍： The journal European Food Research and Technology publishes state-of-the-art research papers and review articles on fundamental and applied food research. The journal''s mission is the fast publication of high quality papers on front-line research, newest techniques and on developing trends in the following sections: -chemistry and biochemistry- technology and molecular biotechnology- nutritional chemistry and toxicology- analytical and sensory methodologies- food physics. Out of the scope of the journal are: - contributions which are not of international interest or do not have a substantial impact on food sciences, - submissions which comprise merely data collections, based on the use of routine analytical or bacteriological methods, - contributions reporting biological or functional effects without profound chemical and/or physical structure characterization of the compound(s) under research.