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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
Meat tenderness and the gap filaments
R H Locker1, G J Daines, W A Carse
1Meat Industry Research Institute of New Zealand, PO Box 617. Hamilton, New Zealand.
Abstract:
A theory is developed relating the myofibrillar component of meat tenderness to a third set of filaments in the sarcomere: the 'gap filaments'. It is prooposed that the gap filaments set the limit to the tensile strength of the raw or heat-denatured myofibril. The basic process of ageing appears to be an attack by 'calcium-activated factor' (CAF) on the integrity of these filaments. An attempt is made to give an integrated picture of the role of both gap filaments and connective tissue in determining the tensile properties of raw, lightly cooked and well cooked meat.
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