Digestive enzymes characterization of krill (Euphausia superba) residues deoiled by supercritical carbon dioxide and organic solvents

Ali-Nehari, Abdelkader; Kim, Seon-Bong; Lee, Yang-Bong; Chun, Byung‐Soo

doi:10.1016/j.jiec.2012.01.026

Cited by 11 publications

(17 citation statements)

References 26 publications

(29 reference statements)

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“…However, it is not an ideal solvent to extract all of the krill lipids as it fails to extract PLs (Yamaguchi et al., ). Even so, higher quality and higher thermally stable functional proteins can be obtained from the krill residues deoiled by this extraction method than those deoiled by traditional solvent extractions (Ali‐Nehari, Kim, Lee, & Chun, ). The addition of 5 to 20% ethanol in the SC‐CO 2 extraction can increase the solute solubility for PLs and thus improve lipid recovery (Bruheim, Tilseth, & Mancinelli, ).…”

Section: Krill Oil Extraction Technologiesmentioning

confidence: 99%

Antarctic Krill (Euphausia superba) Oil: A Comprehensive Review of Chemical Composition, Extraction Technologies, Health Benefits, and Current Applications

Xie

Gong

Wei

et al. 2019

Comp Rev Food Sci Food Safe

134

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Antarctic krill (Euphausia superba) oil has been receiving increasing attention due to its nutritional and functional potentials. However, its application as a novel food ingredient has not yet been fully explored. This review summarizes the chemical composition, extraction technologies, potential health benefits, and current applications of krill oil, with the aim of providing suggestions for its exploitation. Krill oil is a unique lipid consisting of diverse lipid classes and is characterized by a high concentration (39.29% to 80.69%) of phospholipids (PLs) associated with eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). It also contains considerable amounts of bioactive minor components such as astaxanthin, sterols, tocopherols, vitamin A, flavonoids, and minerals. The current technologies used in krill oil production are solvent extraction, nonsolvent extraction, super/subcritical fluid extraction, and enzyme‐assisted pretreatment extraction, which all greatly influence the yield and quality of the end‐product. In addition, krill oil has been documented to have various health benefits, including anti‐inflammatory effects, cardiovascular disease (CVD) prevention, women's health, neuroprotection, and anticancer activities. Although krill oil products used for dietary supplements have been commercially available, few studies have attempted to explore the underlying molecular mechanisms to elucidate how exactly the krill oil exerts different biological activities. Further studies should focus on this to improve the development of krill oil products for human consumption.

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Section: Krill Oil Extraction Technologiesmentioning

confidence: 99%

Antarctic Krill (Euphausia superba) Oil: A Comprehensive Review of Chemical Composition, Extraction Technologies, Health Benefits, and Current Applications

Xie

Gong

Wei

et al. 2019

Comp Rev Food Sci Food Safe

134

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“…Our results are also similar to those of Asaduzzaman and Chun (2015), who found that PAGE protein bands were more prominent in SC-CO 2 treated mackerel residues than in n-hexane-treated samples, and attributed this to the lack of protein denaturation in SC-CO 2 treated samples. It was also demonstrated that there was no protein denaturation in the residues of mackerel viscera, squid viscera (Todarodes pacificus) and krill (Euphausia superba) after oil extraction using the SC-CO 2 method, and that the intensity of electrophoretic patterns between untreated control and SC-CO 2 treated samples were identical (Park et al 2008;Uddin et al 2009;Ali-Nehari et al 2012).…”

Section: Sds-pagementioning

confidence: 99%

“…Conventional mechanical and solvent methods of oil extraction have several limitations such as being timeconsuming, expensive and potentially hazardous to human health and the environment (Russin et al 2011). Degradation and decomposition of thermolabile compounds are unavoidable in these conventional methods while extracting lipids using organic solvents causes protein denaturation and loss of functional properties (Russin et al 2011;Ali-Nehari et al 2012). It was reported that aqueous extracts of hexane-defatted soy flour have undesirable offflavors that diminish their usefulness in food materials and that protein-lipid complexes resist the defatting treatment with n-hexane (Riaz 2006).…”

Section: Introductionmentioning

confidence: 99%

Comparative study of the quality characteristics of defatted soy flour treated by supercritical carbon dioxide and organic solvent

et al. 2017

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Defatted soy flour is a potential source of food protein, amino acids, ash and isoflavones. The supercritical carbon dioxide (SC-CO) and a traditional organic solvent extraction methods were used to remove fat from soy flour, and the quality characteristics of a control soy flour (CSF), defatted soy flour by SC-CO (DSFSC-CO) and defatted soy flour by an organic solvent (DSF-OS) were compared. The SC-CO process was carried out at a constant temperature of 45 °C, and a pressure of 40 MPa for 3 h with a CO flow rate of 30 g/min. The DSFSC-CO had significantly higher protein, ash, and amino acids content than CSF and DSF-OS. The sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) analysis demonstrated that CSF and DSFSC-CO had protein bands of similar intensity and area that indicated no denaturation of protein, whereas DSF-OS showed diffuse bands or no bands due to protein denaturation. In addition to higher nutritional value and protein contents, DSFSC-CO showed superior functional properties in terms of total soluble solids content, water and oil absorption, emulsifying and foaming capacity. The SC-CO method offers a nutritionally and environmentally friendly alternative extraction processing approach for the removal of oil from high-protein food sources. It has a great potential for producing high-protein fat-free, and low-calorie content diet than the traditional organic solvent extraction method.

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“…Similarly, Asaduzzaman and Chun (2015) demonstrated that the gel banding patterns of the protein of SC-CO 2 -treated mackerel residues were more prominent than those in n-hexane-treated samples. Uddin et al (2009) and Abdelkarder et al (2012) reported that no protein denaturation was found in SC-CO 2 -treated squid viscera and krill samples. Park et al (2008) noted the similar intensity of the electrophoretic patterns of SC-CO 2 -treated and control mackerel viscera samples.…”

Section: Resultsmentioning

confidence: 99%

Nutritional Quality and Physicochemical Characteristics of Defatted Bovine Liver Treated by Supercritical Carbon Dioxide and Organic Solvent

Kang¹,

Kim²,

Rahman³

et al. 2017

Korean Journal for Food Science of Animal Resources

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Defatted bovine liver (DBL) is a potential source of protein and minerals. Supercritical carbon dioxide (SC-CO2) and a traditional organic solvent method were used to remove lipid from bovine liver, and the quality characteristics of a control bovine liver (CBL), bovine liver defatted by SC-CO2 (DBLSC-CO2) at different pressures, and bovine liver defatted by organic solvent (DBL-OS) were compared. The DBLSC-CO2 samples had significantly higher (p<0.05) protein, amino acid, carbohydrate, and fiber contents than CBL and DBL-OS. There was a higher yield of lipid from CBL when using SC-CO2 than the organic solvent method. SDS-PAGE analysis demonstrated that the CBL and DBLSC-CO2 had protein bands of a similar intensity and area, whereas DBL-OS appeared extremely poor bands or no bands due to the degradation of proteins, particularly in the 50 to 75 kDa and 20 to 25 kDa molecular weight ranges. In addition, DBLSC-CO2 was shown to have superior functional properties in terms of total soluble content, water and oil absorption, and foaming and emulsification properties. Therefore, SC-CO2 treatment offers a nutritionally and environmentally friendly approach for the removal of lipid from high protein food sources. In addition, SC-CO2 may be a better substitute of traditional organic solvent extraction for producing more stable and high quality foods with high-protein, fat-free, and low calorie contents.

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Digestive enzymes characterization of krill (Euphausia superba) residues deoiled by supercritical carbon dioxide and organic solvents

Cited by 11 publications

References 26 publications

Antarctic Krill (Euphausia superba) Oil: A Comprehensive Review of Chemical Composition, Extraction Technologies, Health Benefits, and Current Applications

Antarctic Krill (Euphausia superba) Oil: A Comprehensive Review of Chemical Composition, Extraction Technologies, Health Benefits, and Current Applications

Comparative study of the quality characteristics of defatted soy flour treated by supercritical carbon dioxide and organic solvent

Nutritional Quality and Physicochemical Characteristics of Defatted Bovine Liver Treated by Supercritical Carbon Dioxide and Organic Solvent

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