Winter season krill (<i>Euphausia superba</i> D.) as a source of n‐3 polyunsaturated fatty acids

Kołakowska, Anna; Kolakowski, E.; Szczygielski, M.

doi:10.1002/food.19940380204

Cited by 47 publications

(34 citation statements)

References 17 publications

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“…Yoshitomi and Nagano (2012) reported 15.6% palmitic acid and 16.5% oleic acid, similar to values observed in our study, although their EPA content (7.8%) was lower than that observed our study. Kolakowska et al (1994) also showed a similar result for EPA and DHA, while Cho et al (1999) reported that palmitic acid, EPA, and DHA were found at levels of 19.95, 16.14, and 14.09%, respectively, in the lipids from whole krill powder. Sriket et al (2007) reported DHA and EPA at levels of 14.9 and 8.58%, respectively, in the lipids from black tiger shrimp order of concentration from highest to lowest.…”

Section: Resultssupporting

confidence: 54%

“…Previous studies have shown that krill had a moisture content of 77.9-83.1%, lipid content of 0.4-3.6%, protein content of 11.9-15.4%, and chitin content of <2% (Grantham, 1977), although one study recorded a protein content of 72.9-75.8% (dry matter) and lipid content of 12-50% (dry matter; Saether et al, 1986;Jaczynski et al, 2011). Krill oil contains a high volume of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA; Kolakowska et al, 1994;Jaczynski et al, 2011). Krill have a higher proportion of cholesterol than fish but less than shrimp , containing 123 μg/g zinc (Zn; dry matter), 2.5 μg/g cadmium analyzed according to the method of Horwitz (2005).…”

Section: Introductionmentioning

confidence: 99%

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Monthly Variations in the Nutritional Composition of Antarctic Krill Euphausia superba

Kim¹,

Jung²,

Lee³

et al. 2014

Fisheries and aquatic sciences

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The proximate composition and various specific components of Antarctic krill Euphausia superba, in the catch season between March and August were investigated. Frozen krill were freeze-dried and milled. The proximate composition comprised water, proteins, fats, ash, fatty acids, and amino acids, while the specific components were vitamins, minerals, nucleotides, betaine, and astaxanthin. The moisture content of the krill ranged from 77 to 80%, with the highest value in June, and the ash content was between 12 and 13%. The protein content was lowest in May, and the fat content was 18-19%, with the highest value in March. The amino acid content varied according to the season: taurine and glycine were highest in August; β-alanine was higher in April and May; and arginine, ornithine, and lysine were highest in March. The unsaturated fat content was ~50% and omega-3 fatty acids were highest in June. Oil-soluble vitamins A and E were highest in March, and the water-soluble vitamin content was less than that of oil-soluble vitamins. The mineral content was highest in June, and the most abundant mineral was sodium at 235.60 mg/100 g krill. The content of other minerals was lowest (2.94 mg/100 g) in April, except for lead. The nucleotide content was highest in July, while the betaine content was highest in April and lowest in June. The astaxanthin content was highest in May and ranged from 6 to 10 ppm in other months.

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Section: Resultssupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Monthly Variations in the Nutritional Composition of Antarctic Krill Euphausia superba

Kim¹,

Jung²,

Lee³

et al. 2014

Fisheries and aquatic sciences

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“…Krill is a small marine crustacean (2.5-6-cm size and 2-g weight) whose 65 % of total dry weight are proteins and, depending on the species, age, and time from capture to freezing, the lipid content varies from 12 to 50 % (Kolakowska et al 1994;Saether et al 1986;Svetlova et al 1985). Most of the commercially available krill are harvested in the Antarctic Ocean (Euphausia superba).…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Study of the Lipid Classes of Krill Oil by Fractionation and Identification of Triacylglycerols, Diacylglycerols, and Phospholipid Molecular Species by Using UPLC/QToF-MS

et al. 2015

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Krill oil represents an interesting source of bioactive lipid components, being suitable as a functional ingredient. This oil is characterized by its high concentration of longchain omega-3 fatty acids, especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). The contents of EPA and DHA were similar to those in fish oils, but with the difference that almost the half are located in phospholipids (mainly phosphatidylcholine). This might explain its higher absorption and bioavailability. This highly unsaturated oil maintains stable due to the presence of astaxanthin, a potent antioxidant, which assures the stability of the omega-3 fatty acids. However, there is lack of investigations reporting a deep comprehensive description of the krill oil (KO) lipid composition. The characterization includes new data of its neutral and polar components and the identification of triacylglycerols, diacylglycerols, and molecular species that has been done by different chromatographic techniques as gas chromatography-mass spectrometry/flame ionization detector (GC-MS/ FID), flash chromatography-evaporative light scattering detector (FC-ELSD), and HPLC-ELSD. Also phospholipid molecular species by using ultraperformance liquid chromatography/quadruple-time-of-flight mass spectrometry (UPLC/QToF-MS) have been determined.

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“…Suzuki and Shibata [4] reported that the biological value of krill proteins was higher than that of other meat protein and milk proteins. It is abundant in omega-3 polyunsaturated fatty acids (n-3 PUFA), for example eicosapentaenoic (EPA, 20:5n3) and docosahexaenoic (DHA, 22:6n3) acids [7]. Gigliotti et al [8] proved that oil extracted from krill contained predominantly phospholipids (20-33%), polar nonphospholipids (64-77%), and minor triglycerides (1-3%).…”

Section: Introductionmentioning

confidence: 98%

Determination of biotin in Antarctic krill (Euphausia superba) by high‐performance TLC with different post‐chromatographic derivatizations

Teo

Liu

2013

J of Separation Science

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A new efficient method was developed to detect biotin in Antarctic krill by Vis-absorbance detection. DMF was used after chloroform pretreatment to extract biotin and two chromogenic methods were developed. The development system consisted of dichloromethane/dimethylcarbinol/methanol/glacial acetic acid (3:3:2:0.015, v/v/v/v). Samples were separated on precoated silica gel GF254 high-performance TLC plates. Densitometric analysis of biotin was carried out in the absorbance mode at 400 and 530 nm. The biotin content was determined to be 1.0948 ± 0.0097 and 1.1212 ± 0.0155 mg/g in Antarctic krill with the two chromogenic methods, which had no significant difference.

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Winter season krill (Euphausia superba D.) as a source of n‐3 polyunsaturated fatty acids

Cited by 47 publications

References 17 publications

Monthly Variations in the Nutritional Composition of Antarctic Krill Euphausia superba

Monthly Variations in the Nutritional Composition of Antarctic Krill Euphausia superba

Comprehensive Study of the Lipid Classes of Krill Oil by Fractionation and Identification of Triacylglycerols, Diacylglycerols, and Phospholipid Molecular Species by Using UPLC/QToF-MS

Determination of biotin in Antarctic krill (Euphausia superba) by high‐performance TLC with different post‐chromatographic derivatizations

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