Composition and properties of water-soluble preparation from salmon liver
Amino acid composition and antioxidant activity are investigated for dried liver of chum salmon Oncorhynchus keta , for water-soluble preparation from the dried liver, and for 1-10 kDa fraction of the water-soluble preparation. The water-soluble preparation contains more than 60 % peptides of molecu...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | Russian |
| Published: |
Transactions of the Pacific Research Institute of Fisheries and Oceanography
2014-09-01
|
| Series: | Известия ТИНРО |
| Subjects: | |
| Online Access: | https://izvestiya.tinro-center.ru/jour/article/view/216 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Amino acid composition and antioxidant activity are investigated for dried liver of chum salmon Oncorhynchus keta , for water-soluble preparation from the dried liver, and for 1-10 kDa fraction of the water-soluble preparation. The water-soluble preparation contains more than 60 % peptides of molecular weight 1-10 kDa, about 18 % peptides of > 10 kDa, and about 20 % low molecular peptides of molecular weight < 1 kDa. The content of combined amino acids is the highest in the water-soluble preparation (672.5 mg/g), it is lower in its 1-10 kDa fraction (544.4 mg/g) and the lowest in the dried liver (333.3 mg/g). On the contrary, the content of free ninhydrin-positive compounds is the highest in the liver (91.64 mg/g) and the lowest in the water-soluble preparation (61.36 mg/g). Relative to the level of carnosine antioxidant activity, the antioxidant activity of the dried liver is higher in 5.2 times, the activity of the water-soluble preparation is higher in 4.2 times, and the activity of the 1-10 kDa fraction is higher in 6.3 times. Three isoforms of such biologically active peptide as hepcidin are found in the 1-10 kDa fraction, their molecular weights are 2841.54, 2913.54 and 3025.63 Da. |
|---|---|
| ISSN: | 1606-9919 2658-5510 |