EVALUATION THE EFFICIENCY OF THE VITAMIN E,C, THEIR COMBINATION AND GRAPE SEED EXTRACT TO PRESERVE THE STABILITY OF SUBCUTANEOUS AND TAIL FATS FROM EWE CARCASSES DURING FROZEN STORAGE

H. Saleh, H.; J. Hindi, M.; E. ALkass, J.

	EVALUATION THE EFFICIENCY OF THE VITAMIN E,C, THEIR COMBINATION AND GRAPE SEED EXTRACT TO PRESERVE THE STABILITY OF SUBCUTANEOUS AND TAIL FATS FROM EWE CARCASSES DURING FROZEN STORAGE
IRAQ JOURNAL OF AGRICULTURE
Article 1, Volume 14, Issue 4, 2009, Pages 0-0
Authors
H. H. Saleh; M. J. Hindi; J. E. ALkass
Abstract
This investigation was carried out to examine the development of oxidative rancidity in subcutaneous and tail fats of ewes, when treated separately with vitamins E, C, E+C mixture and aqueous grape seed extract (GSE) and then subjected to frozen storage at –18C˚ for 1.45 and 90 days. The obtained results showed that samples of subcutaneous fats treated with a mixture of vitamins E+C, and GSE revealed lower TBA values after 90 days of frozen storage, as compared to the vitamin E, vitamin C and control treatments. The PV increased in the subcutaneous fats for the control treatment, as values increased initially from 1.73 to 5.31 millequ/kg fat after 90 days of frozen storage. While samples treated with GSE, Vitamins E+C mixture, vitamin E and vitamin C showed slight increase in PV that rated 2.51, 2.74, 3.24 and 3.9 milliequ/kg fat respectively. It was also observed that TBA values in fat tail for the control treatment were increased from initial value of 0.83 to 2.18 mg malon aldehyde/ kg fat toward the end of storage period. While, the treatments of tail fats with GSE, Vit. E+C, Vit E and Vit C kept TBA values low after 90 days of frozen storage and valued 1.15, 1.21, 1.33 and 1.54 mg malon aldehyde/kg fat respectively. As for the PV in tail fats control samples, values increased to 6.49 millequ/kg fat after 90 days of frozen storage. It was also shown that the treatments of tail fats with GSE and vitamins E+C mixture reduced obviously PV as compared to the control sample upon frozen storage.

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