Summary
A convenient method for the determination of monocarbonyl compounds in rancid foods is described. The quantitative procedure is based on the formation of the 2,4‐dinitrophenylhydrazones of monocarbonyl compounds in benzene solution, the removal of excess hydrazine reagent and the hydrazones of dicarbonyl compounds with alumina, and the colorimetric determination of the remaining hydrazones of monocarbonyl compounds in alkaline solution. Applicability to aldehydes varying in molecular size and degree of unsaturation has been demonstrated. The method may be used on the crude benzene extracts of rancid foods. Illustrative data are presented.
when injected subcutaneously, but was pathogenic for baby chicks when exposed intracerebrally, intranasally, intramuscularly, subcutaneously, and intraperitoneally. REFERENCE Reagan, R. L., M. G. Lillie, J. E. Hauser and A. L. Brueckner, 1948. Response of the Syrian hamster to the virus of Newcastle disease. Proc. Soc. Exp. Biol. Med. 68: 293-294.
SUMMARY
The minimization of post‐mortem glycolysis by 1) subcutaneous injections of adrenaline, which eliminates muscle glycogen ante‐mortem, 2) intravenous injections of sodium iodoacetate, which inhibits phosphoglyceraldehyde dehydrogenase, or 3) rapid cooking, has resulted in poultry meat that is tender without aging. Since these treatments accelerate rigor mortis, the elimination of post‐mortem glycolysis eliminates the toughening associated with an acceleration of rigor mortis in normal birds.
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