Characterization of purified phospholipids from krill (Euphausia superba) residues deoiled by supercritical carbon dioxide

Ali-Nehari, Abdelkader; Chun, Byung‐Soo

doi:10.1007/s11814-011-0273-4

Cited by 26 publications

(19 citation statements)

References 31 publications

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“…In this study, two indexes including AV and lipid class composition were measured to reflect the change of FFA. The AV of PRKO was 22.84 mg KOH/g, which agrees with the corresponding value of a purified krill PL (23.07 mg KOH/g) prepared by a similar SC‐CO 2 coupled to ethanol extraction procedure (Ali‐Nehari and Chun ). TLC analysis of PRKO indicated that FFA accounted for 1.08% of total lipid.…”

Section: Discussionsupporting

confidence: 82%

“…Similar to FO, KO contains high levels of n‐3 LC‐PUFA (Gigliotti et al . ; Ali‐Nehari and Chun ). However, most of the n‐3 LC‐PUFA in KO are incorporated into phospholipids (PL), whereas, most of those in FO are incorporated into triglycerides (TG) (Tillander et al .…”

Section: Introductionmentioning

confidence: 99%

“…Because of the possibly high bioavailability of n‐3 LC‐PUFA, krill PL might be a new type of commercial krill product. Recently, two purification procedures of krill PL have been reported (Ali‐Nehari and Chun ; Zhao et al . ).…”

Section: Introductionmentioning

confidence: 99%

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Influence of Storage Conditions on the Stability of Phospholipids-Rich Krill (Euphausia superba) Oil

Yin

Zhou

et al. 2016

Journal of Food Processing and Preservation

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The influences of storage temperature (−20C, 4C, room temperature and 40C), light and oxygen on stability of a phospholipids‐rich krill oil (PRKO) with storage time up to 8 weeks were evaluated. The acid value and free fatty acid content were constant when PRKO was stored at −20C, 4C and room temperature. The two values remained stable for 3 weeks, and then increased slowly when PRKO was stored at 40C. The peroxide value of PRKO stored at all conditions was constant during the 8‐week storage. However, the thiobarbituric reactive substance of sample stored at most conditions showed a firstly increased and then decreased pattern. Meanwhile, after 8‐week storage, the fatty acid composition of PRKO changed slightly, with a decrease in polyunsaturated fatty acids and an increase in saturated fatty acids. Furthermore, astaxanthin content of PRKO decreased when the sample was stored at 40C. Practical Applications These years, krill oil (KO) has captured increasing consumer interest and market share as an alternative source of omega‐3 long chain polyunsaturated fatty acids (n‐3 LC‐PUFA). Especially, most of the n‐3 LC‐PUFA in KO is incorporated into phospholipids (PL). Some studies showed that n‐3 LC‐PUFA in PL form had higher bioavailability than those in ethyl esters (EE) form and triglycerides (TG) form, giving a basis for developing a new type of commercial krill product using krill PL. The present study prepared a PL‐rich KO (PRKO) through a supercritical carbon dioxide coupled to ethanol extraction procedure. The influences of storage temperature (−20C, 4C, room temperature and 40C), light and oxygen on stability of the PRKO with storage time up to 8 weeks were evaluated. Results of this research revealed that the PRKO had very good storage stability, which provides information for determining the storage conditions of krill PL.

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Section: Discussionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

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Influence of Storage Conditions on the Stability of Phospholipids-Rich Krill (Euphausia superba) Oil

Yin

Zhou

et al. 2016

Journal of Food Processing and Preservation

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“…These results are in agreement with the distribution reported by Smith and Lowry [21] in milk fat, who also observed an increment of SFA as well as a decrease in MUFA and PUFA in TAG when compared with the PL composition. Furthermore, this higher presence of SFA and its relation with higher TAG content and unsaturated FA to PL has also been observed in other animal fats [22,23,24,25,26]. On the other hand, Sánchez-Juanes et al [27] and Zancada et al [28] reported the absence of short FA (C4 to C8) in the PL fractions, while Lopez et al [29] noted the presence of short FA in an isolated PL fraction, although at a lower concentration than was observed in the F1 fraction of this work, which could be related to the high content of DAG.…”

Section: Resultssupporting

confidence: 70%

In-Depth Lipidomic Analysis of Molecular Species of Triacylglycerides, Diacylglycerides, Glycerophospholipids, and Sphingolipids of Buttermilk by GC-MS/FID, HPLC-ELSD, and UPLC-QToF-MS

Castro-Gómez

Montero

Fontecha

2017

IJMS

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Buttermilk, a byproduct of butter manufacturing, has gained considerable attention due to its high concentration of polar lipids as phospho- and sphingolipids from the milk fat globule membrane (MFGM). These polar lipids (PLs) are essential components of all cellular membranes and exert a variety of indispensable metabolic, neurological, and intracellular signaling processes. Despite its importance, there are few research studies that report a comprehensive characterization of the lipid molecular species of MFGM that could contribute to a better understanding of their putative healthful activities. In this study, procedures such as pressurized liquid extraction of polar and nonpolar lipids and their fractionation by flash chromatography have been carried out. The obtained fractions were submitted to an exhaustive characterization from a lipidomic point of view. The characterization includes new data about the identification and quantification of triacylglycerides (TAG), diacylglycerides (DAG), and phospho- and sphingolipids using different chromatographic techniques. The fatty acid profile was comparable to that of the milk fat but with a highly diverse composition of fatty acids. Molecular species have also been determined by using ultra-high performance liquid chromatography/quadruple-time-of-flight mass spectrometry (UPLC/QToF-MS). The TAG (16:0/16:0/6:0) and TAG (16:0/16:0/8:0) were the predominant saturated TAG species and TAG (14:0/18:1/16:0) and TAG (16:0/16:0/18:1) presented the highest content of monounsaturated TAG species. Furthermore; over 30 molecular species of phosphatidylcholine (PC), phosphatidylethanolamine (PE), phosphatidylserine (PS), and phosphatidylinositol (PI) could be identified within PL, with PC (16:0/18:1) being the most abundant species. Whereas C16:0 was found to be the preferred FA in TAGs, it was C18:1 in PLs. Several ganglioside species have also been characterized with d18:1 ceramide moiety and secondary acyl chains ranging from C20:0 to C26:1. This approach could broaden the applications of high-resolution mass spectrometry for a better understanding of the role of MFGM and its functionality.

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“…Also, high-pressure phase equilibria of binary mixtures for the carbon dioxide + hydrocarbon systems are of interest in a wide range of numerous chemical processes such as separation processes [4,5], supercritical fluid (SCF) extraction [6,7], polymerization processes condition [8] and fine chemical industry.…”

Section: Introductionmentioning

confidence: 99%

Effect of cosolvent on the phase behavior of binary and ternary mixture for the poly(2-dimethylaminoethyl methacrylate) in supercritical solvents

Kim

Byun

2014

Fluid Phase Equilibria

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Characterization of purified phospholipids from krill (Euphausia superba) residues deoiled by supercritical carbon dioxide

Cited by 26 publications

References 31 publications

Influence of Storage Conditions on the Stability of Phospholipids-Rich Krill (Euphausia superba) Oil

Influence of Storage Conditions on the Stability of Phospholipids-Rich Krill (Euphausia superba) Oil

In-Depth Lipidomic Analysis of Molecular Species of Triacylglycerides, Diacylglycerides, Glycerophospholipids, and Sphingolipids of Buttermilk by GC-MS/FID, HPLC-ELSD, and UPLC-QToF-MS

Effect of cosolvent on the phase behavior of binary and ternary mixture for the poly(2-dimethylaminoethyl methacrylate) in supercritical solvents

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