Oregon Agricultural Experiment Station Technical Paper No. 6607.
Proteolytic Activity in the Sarcoplasmic Fluids of Parasitized Pacific Whiting (Merluccius productus) and Unparasitized True Cod (Gadus macrocephalus)
Article first published online: 25 AUG 2006
Journal of Food Science
Volume 48, Issue 4, pages 1315–1319, July 1983
How to Cite
ERICKSON, M. C., GORDON, D. T. and ANGLEMIER, A. F. (1983), Proteolytic Activity in the Sarcoplasmic Fluids of Parasitized Pacific Whiting (Merluccius productus) and Unparasitized True Cod (Gadus macrocephalus). Journal of Food Science, 48: 1315–1319. doi: 10.1111/j.1365-2621.1983.tb09219.x
This work was supported by the Oregon State University Sea Grant College Program, National Oceanic & Atmospheric Adm., U.S. Dept. of Commerce and a grant from the National Fisheries Institute, Inc.
- Issue published online: 25 AUG 2006
- Article first published online: 25 AUG 2006
- Ms received 11/7/82; revised 4/25/83; accepted 5/2/83.
Proteolytic enzymes in the sarcoplasmic fluid of Pacific whiting (Merluccius productus) were studied to determine which proteases might be involved in the severe textural defect associated with this species. The results were compared to those obtained for true cod (Gadus macrocephalus), a fish having firm texture. Two pH optima of enzymic activity were noted for whiting, pH 3.5–3.9 and 7.1–7.2. Two pH optima were also observed for cod, pH 3.2–3.6 and 7.8–8.0. Whiting but not true cod contained enzymic activity similar to cathepsin B. Cathepsin C activity was greater in whiting than in cod.