title: Antioxidant, Liver Protective and Angiotensin I-converting Enzyme Inhibitory Activities of Old Laying Hen Hydrolysate in Crab Meat Analogue.
abstract: The purpose of this study was to evaluate the antioxidative activities of Crab meat analogue prepared with protein hydrolysates obtained from mechanically deboned chicken meat (MDCM) from spent laying hens. 2,2-diphenyl-1-picrylhydrazyl hydrate (DPPH) radical-scavenging activity was increased by adding MDCM hydrolysates during storage, and activity correlated with the concentration of DPPH added up to 6 weeks of storage. Hydroxyl radical-scavenging activity was increased in all analogues containing MDCM hydrolysates. At 0 days of storage, angiotensin I-converting enzyme (ACE)-inhibitory activity was increased by the addition of MDCM hydrolysates. Activity did not correlate after 6 weeks of storage, in which ACE-inhibitory activity was increased with low concentrations of MDCM hydrolysates, but no ACE-inhibitory activity was observed at higher concentrations. The liver-protecting activity of crab meat analogue was shown to be around 60% of the positive control; however, it was not significantly different among the samples during storage. These results support the use of MDCM as a source of health-promoting constituents in crab meat analogue.
authors.affiliation: Department of Animal Resources Technology, Gyeongnam National University of Science and Technology, Jinju 52725, Korea Korea.
authors.forename: Sang Keun
authors.initials: SK
authors.lastname: Jin
authors.affiliation: Swine Science and Technology Center, Gyeongnam National University of Science and Technology, Jinju 52725, Korea.
authors.forename: Jung Seok
authors.initials: JS
authors.lastname: Choi
authors.affiliation: Department of Seafood Science and Technology, Gyeongsang National University, Tongyeong 53063, Korea.
authors.forename: Yeung Joon
authors.initials: YJ
authors.lastname: Choi
authors.affiliation: Natural Product Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Korea.
authors.forename: Seung-Jae
authors.initials: SJ
authors.lastname: Lee
authors.affiliation: Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea.
authors.forename: Seung Yun
authors.initials: SY
authors.lastname: Lee
authors.affiliation: Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea.
authors.forename: Sun Jin
authors.initials: SJ
authors.lastname: Hur
keywords: Antihypertension; Antioxidative Activity; Crab Meat Analogue; Liver-protection Effect; Mechanically Deboned Chicken Meat Hydrolysates