title: Evaluation of Physicochemical Deterioration and Lipid Oxidation of Beef Muscle Affected by Freeze-thaw Cycles.
abstract: This study was performed to explore the deterioration of physicochemical quality of beef hind limb during frozen storage at -20℃, affected by repeated freeze-thaw cycles. The effects of three successive freeze-thaw cycles on beef hind limb were investigated comparing with unfrozen beef muscle for 80 d by keeping at -20±1℃. The freeze-thaw cycles were subjected to three thawing methods and carried out to select the best one on the basis of deterioration of physicochemical properties of beef. As the number of repeated freeze-thaw cycles increased, drip loss decreased and water holding capacity (WHC) increased (p<0.05) till two cycles and then decreased. Cooking loss increased in cycle one and three but decreased in cycle two. Moreover, drip loss, WHC and cooking loss affected (p<0.05) by thawing methods within the cycles. However, pH value decreased (p<0.05), but peroxide value (p<0.05), free fatty acids value (p<0.05) and TBARS value increased (p<0.05) significantly as the number of repeated freeze-thaw cycles increased. Moreover, significant (p<0.05) interactive effects were found among the thawing methods and repeated cycles. As a result, freeze-thaw cycles affected the physicochemical quality of beef muscle, causing the degradation of its quality.
authors.affiliation: Department of Animal Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
authors.forename: M H
authors.initials: MH
authors.lastname: Rahman
authors.affiliation: Department of Animal Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
authors.forename: M M
authors.initials: MM
authors.lastname: Hossain
authors.affiliation: Department of Food Science and Biotechnology, College of Agriculture Life Sciences, Kangwon National University, Chuncheon 24341, Korea; Department of Animal Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
authors.forename: S M E
authors.initials: SM
authors.lastname: Rahman
authors.affiliation: Department of Physiology and Pharmacology, Patuakhali Science and Technology University, Barisal-8210, Bangladesh.
authors.forename: M R
authors.initials: MR
authors.lastname: Amin
authors.affiliation: Department of Food Science and Biotechnology, College of Agriculture Life Sciences, Kangwon National University, Chuncheon 24341, Korea.
authors.forename: Deog-Hwan
authors.initials: DH
authors.lastname: Oh
keywords: beef muscle; freeze-thaw cycle; lipid oxidation; physicochemical