Influence of ultrasound and proteolytic enzyme inhibitors on muscle degradation, tenderness, and cooking loss of hens during aging

Guo-Yuan Xiong, Li-Li Zhang, Wei Zhang and Juan Wu
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Guo-Yuan Xiong: Animal Husbandry and Veterinary Institute, Anhui Academy of Agricultural Sciences, Hefei, P.R. China
Li-Li Zhang: Animal Husbandry and Veterinary Institute, Anhui Academy of Agricultural Sciences, Hefei, P.R. China
Wei Zhang: Animal Husbandry and Veterinary Institute, Anhui Academy of Agricultural Sciences, Hefei, P.R. China
Juan Wu: Animal Husbandry and Veterinary Institute, Anhui Academy of Agricultural Sciences, Hefei, P.R. China

Czech Journal of Food Sciences, 2012, vol. 30, issue 3, 195-205

Abstract: The potential contribution of mechanical disruption by ultrasonics and endogenous proteolytic enzymes on the tenderisation of hen muscle were investigated. The importance of endogenous enzymes was evaluated using various specific inhibitors. Freshly obtained breast muscles of culled hens, from the 6 groups investigated were treated with different proteolytic enzyme inhibitors and/or ultrasonics, group was treated with different methods, and then stored at 4°C for 0, 1, 3, and 7 days. Shear force decreased by 1.19 kg, and shear force and cooking loss were reduced by 0.69 kg and 4.27%, respectively, in the incorporated group treatment. The calpastatin activity was affected by all treatments except in the Z-DEVD-fmk-treated group, caspase-3 activity decreased in Z-DEVD-fmk-treated group. Therefore, the results suggest that ultrasonics and endogenous proteases contributed to muscle degradation, thereby improving hen meat tenderness and decreasing the cooking loss. Thus muscle degradation, tenderness, and water-retaining properties of hens were improved by a combination of ultrasound and exogenous proteolytic enzyme inhibitors.

Keywords: ultrasonic; protease inhibitor; incorporating treatment; myofibrillar protein; Caspase-3/7; Z-DEVD-fmk (search for similar items in EconPapers)
Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjf:v:30:y:2012:i:3:id:136-2011-cjfs

DOI: 10.17221/136/2011-CJFS

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