Collapse of the endogenous antioxidant enzymes in post-mortem broiler thigh muscles triggers oxidative stress and impairs water-holding capacity; PY2019; glutathione;_IR91_

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2021-03-25
Collapse of the endogenous antioxidant enzymes in post-mortem broiler thigh muscles triggers oxidative stress and impairs water-holding capacity; PY2019; glutathione;_WJD_2021-0325_V001R01_IR91_RvD20210325_
Source (資訊來源):
https://link.springer.com/article/10.1007/s13197-019-03611-1
Info cited on 2021-03-25-WD4 (資訊引用於 中華民國110年西元2021年3月25日) by 湯偉晉 (WeiJin Tang)
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Original Article
Published: 13 February 2019

Collapse of the endogenous antioxidant enzymes in post-mortem broiler thigh muscles triggers oxidative stress and impairs water-holding capacity

Rafael H. Carvalho, Elza I. Ida, Marta S. Madruga, Massami Shimokomaki & Mario Estévez
Journal of Food Science and Technology volume 56, pages1371–1379(2019)

Abstract
This study was conducted to investigate the effect of the collapse of the endogenous antioxidant enzymes, namely, catalase (CAT), glutathione peroxidase (GSH-Px) and superoxide dismutase (SOD) in post-mortem (PM) chicken thigh muscles on the extent of lipid and protein oxidation and the functionality of the muscle in terms of water-holding. To fulfil this objective, the samples were divided into two treatments: one group of muscles (n = 8) was subjected to delay cooling (DC) (at ~ 37 °C for 200 min PM) and then stored at 4 °C for 24 h. The second group (n = 8) was subjected to a normal cooling (NC): samples were immediately chilled at 4 °C for 24 h. DC samples presented a decrease in 16% of CAT, 25% GSH-Px and 20% SOD activity in relation to NC. Consistently, an increase of 36% of total carbonyl, 15% of Schiff bases and 27% of TBA-RS and 14% of tryptophan (色胺酸) depletion was observed in DC samples, as compared to NC. The results suggested that DC challenged muscles to struggle against oxidative reactions, consuming endogenous antioxidant defenses and causing protein and lipid oxidation which in turn affect the quality and safety of chicken meat. These results emphasize the role of PM oxidative stress on chicken quality and safety. Antioxidant strategies like fast cooling may be combined with others (dietary antioxidants) to preserve chicken quality against oxidative stress.

Reference:
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Honikel KO (1987) How to measure the water-holding capacity of meat? Recommendation of standardized methods. In: Tarrant PV, Eikelenboom G, Monin G (eds) Evaluation and control of meat quality in pigs. Current topics in veterinary medicine and animal science, vol 38. Springer, Dordrecht, pp 129–142. https://doi.org/10.1007/978-94-009-3301-9_11

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