Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Proteins in fish muscle
Jebsen, J.W. (1962). Proteins in fish muscle, in: Heen, E. et al. Fish in nutrition. pp. 68-72
In: Heen, E.; Kreuzer, R. (1962). Fish in nutrition. Fishing News (Books): London. XXIII, 447 pp.
|
| Abstract |
(1) The proteins of muscle fibrines, tropomyosin, actin, myosin and actomyosin: 65 per cent of fish muscle protein (40% in mammals). (2) The proteins of cytoplasma (enzymes in muscle metabolism), globulin x, myogen, myoglobin: 26-30 % of fish muscle protein (35-40 per cent in mammals). (3) The proteins of the connective tissue, stromaproteins (collagen): 3 % of the muscle of teleost; 10% in elasmobranch (17 per cent in mammals). Group 1: extractable with neutral salt solution of high ionic strength >= 0.5. Group 2: extractable with neutral salt solution of low ionic strength <= 0.15. Group 3: not extractable with neutral salt solution, nor in diluted acids and alkalies. Group 1 has great crystal lattice energy and great dipole moment; this results in great sensitivity towards salt ionesGroup 2 is rich in charged side chains, but has a small dipole moment; this results in a lower sensitivity towards salt iones. Precipitation of fish proteins: percentage saturation of ammonium sulphate. Tropomyosin: 50-66 Myosin: 35-48Actin: 10-20Actomyosin: 28-38 Result of electrophoresis:Both pure actomyosin and pure actin give one sharp peak. Pure myosin gives a broader peak; this may indicate some heterogeneity. Myogen gives 7 components by Tiselius-electrophoresis. Each species of fishes gives a different pattern. Electrophoresis in starchgel gives 12 components at pH 7.5.Results by ultracentrifuge:Both actomyosin and tropomyosin give one sharp peak. Myosin is not homogeneous. Myogen gives four componements.Crystallized fish protein:Myogen proteins, myoglobin and tropomyosin. In the white muscle, glycogenic metabolism predominates; in the red muscle (Musculus lateralis superficialis trunci) the citric acid cycle probably prevails. The red muscle (e.g. in tuna) seems to be a passive muscle with a high oxygen metabolism. The white muscle is an active muscle with low oxygen supply. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
