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Updated: May 27, 2026

Exploring the Longissimus Muscle: Unraveling its Correlation with Meat Quality in Bos indicus and Crossbred Bulls
Published on: July 12, 2024
Release of free amino-acids during ageing in bovine meat
C Feidt1, A Petit, F Bruas-Reignier
1Laboratoire de Sciences Animales Ensaia-Inra, 2, Av. de la Forêt de Haye. 54500, Vandoeuvre, France.
Abstract:
The amounts of free amino-acids in Longissimus dorsi (LD), Triceps brachii (TB) and Rectus femoris (RF) from 8 Friesian 20-month old bulls were determinated using gas chromatography. The amounts of free amino-acids released during storage from 3 to 14 days post mortem at 4 °C depended on the muscle. Total free hydroxyproline in LD increased from 3% at 3 days to 11% at 14 days post mortem. Free amino-acids seemed to increase more after 10 days than between 3 and 10 days post mortem. The myofibrillar fragmentation index was highly correlated with leucine, isoleucine, threonine and methionine contents in TB and RF. MFI was correlated with hydroxyproline, leucine and isoleucine in LD.
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