Observations on changes in the major protein nitrogen fractions of prawns and sardines during ice storage
Observations on changes in the major protein nitrogen fractions of prawns and sardines during ice storage
Date
1970
Authors
Devadasan, K.
Nair, M.R.
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)
Abstract
Marine prawns (M. dobsoni and P. indicus) and sardines (S. longiceps) were cleaned, beheaded, packaged in thin gauge polyethylene bags and stored in ice. The method of Paul [Journal of Agricultural and Food Chemistry (1966) 14 (5) 490] was employed for extracting and determining protein fractions (sarcoplasmic, myofibrillar, stroma, denatured) during storage for up to 13 days. The method is described and results are tabulated. Sarcoplasmic protein N decreased by 3-6% in all species during the storage period. Myofibrillar protein N decreased by 15-20% in prawns and by 3% in sardines. Denatured protein N increased by 20-25% in prawns and by 10% in sardines. Stroma protein N showed a slight increase (0.5-2.0%) in all species.
Description
Keywords
ice, prawns, proteins, sardine
Citation
Fishery Technology 1970:7(2), 195-197