The effects of size of fish on composition and of time in storage at -18OC on lipid and sensory changes for channel catfish. Ictalurus punctatus, were investigated. Dressed large (1.0 kg) fish (LF) averaged 13.2% fat, while dressed small (0.3 kg) fish (SF) averaged 10.8% fat (P < 0.05). Moisture was lower (P < 0.05) for LF (68.1 vs. 70.8%). Thiobarbituric acid (TBA) values for LF increased during the first ten months and dropped during the 12th month, while TBA values reached their highest level after the 8th month for SF.Free fatty acids did not change for LF but increased (P < 0.05) throughout storage for SF. Lipids for both sizes of fish were 25% saturated, 58% monounsaturated, and 17% polyunsaturated fatty acids. C 14:0, C 18:0, and C 18:3 acids decreased after 12 months of frozen storage. LF were rated higher (P < 0.05) in flavor for the first four months but were not rated significantly different from SF thereafter. These results indicate that although LF contained more fat, they did not oxidize any more than did SF, and both sizes were acceptable to panelists throughout the study. Thus, if channel catfish is handled and stored properly regardless of size, it should be acceptable even after 12 months frozen storage.
Nonvacuum (NV), vacuum (V) or nitrogen back flush (NB) processing conditions during intermittent tumbling (10 mitt&r) were compared for effects on the characteristics of restructured cured beef. Meat in a NV atmosphere exhibited higher (PcO.05) cooked yields than either V or NB; also V-tumbled meat had higher yields than the NB atmosphere (P
The effects of two thermal processes and two cooking methods (broiling and microwave) on natural residues of DDT and its metabolites in beef were studied. Residue analysis was performed by aluminum oxide cleanup of fat and electron capture gas chromatography. Similar residue losses resulted from broiling, microwave preparation, and processing beef at 104°C for 342 min. Less residue loss occurred when beef was processed at 127°C for 66 min.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.