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An early-postmortem metabolic comparison among three extreme acute heat stress temperature settings in chicken breast muscle. | LitMetric

An early-postmortem metabolic comparison among three extreme acute heat stress temperature settings in chicken breast muscle.

J Food Sci Technol

Laboratory of Meat Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, 61, Daizong Str, Tai'an, 271018 Shandong China.

Published: December 2021

AI Article Synopsis

Article Abstract

Normally, preslaughter acute heat stress could accelerate postmortem glycolysis and impair chicken breast ( muscle) quality. However, previous studies indicated that it might be different when the acute heat stress temperature rises to an extreme range (above 35 °C). Therefore, this study's objectives were to compare the pH decline, glycolytic enzyme activity, and AMP-activated protein kinase (AMPK) phosphorylation at early postmortem among three extreme acute heat stress temperature settings: a control group (36 °C) and two experimental groups (38 °C and 40 °C). Although the temperature did not affect glycogen phosphorylase a and pyruvate kinase activity, there was a decrease in pH decline rate, phosphofructokinase-1 activity, and phospho-AMPK-α[Thr172] within 4 h postmortem when temperature increased from 36 to 40 °C. Temperature also affected hexokinase activity, with the 36 °C-group having the highest activity. The results of the current study, for the first time, indicated that postmortem metabolic rate in chicken breast muscle could be changed by acute heat stress temperature setting at extreme range.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8479024PMC
http://dx.doi.org/10.1007/s13197-021-05230-1DOI Listing

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