Krischek 2019 Meat Sci
Krischek C, Popp J, Sharifi AR (2019) Biochemical alterations in the Musculus triceps brachii and Musculus longissimus thoracis during early postmortem period in pigs. Meat Sci 152:121-26. |
Krischek C, Popp J, Sharifi AR (2019) Meat Sci
Abstract: Muscle-to-meat-transition is influenced by alterations of the energy metabolism. Porcine Musculus triceps brachii (MT) consisted of more fast-twitch-glycolytic muscle fibers and samples, collected 0, 10 and 20β―min after slaughter (p.m.), showed higher mitochondrial respiratory activities and ATP concentrations than Musculus longissimus thoracis (LT) samples. Enzyme activities in MT were higher at 0β―min (glycogen phosphorylase (GP)), 10β―min (GP, citrate synthase (CS)) and at 20β―minβ―p.m. (CS). However, LT results were higher at 0β―min (lactate dehydrogenase (LDH)), 10β―min (phosphofructokinase (PFK), LDH) and at 20β―minβ―p.m. (PFK, F0F1-ATPase (F0F1)). Between 0β―min and 10β―minβ―p.m. CS activities decreased in LT and MT samples, PFK increased in LT and GP in MT samples. Between 10β―min and 20β―minβ―p.m. PFK and LDH decreased in LT and GP in MT samples, whereas F0F1 increased in LT and CS in MT samples. The data indicate that muscles with different mitochondria contents show clearly different energy metabolism characteristics.
β’ Bioblast editor: Plangger M β’ O2k-Network Lab: DE Goettingen Krischek C, DE Goettingen Moerlein D
Labels: MiParea: Respiration
Organism: Pig
Tissue;cell: Skeletal muscle
Preparation: Permeabilized tissue
Enzyme: Complex V;ATP synthase
Regulation: ADP, ATP, AMP
Coupling state: OXPHOS
Pathway: N
HRR: Oxygraph-2k
Labels, 2019-03