Differences in Muscle Fibre Type in Lamb Relate to Differences in Collagen Solubility and Peri-Natal Mmp Activity

M.E. Latorre; P.P. Purslow

Differences in Muscle Fibre Type in Lamb Relate to Differences in Collagen Solubility and Peri-Natal Mmp Activity

In: 63rd International Congress of Meat Science and Technology

Authors:

M.E. Latorre

M.E. Latorre ¹Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Argentina
²Departamento de Tecnología y Calidad de los Alimentos, Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil, Argentina; latorre.emilia@gmail.com

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P.P. Purslow

P.P. Purslow ²Departamento de Tecnología y Calidad de los Alimentos, Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil, Argentina; latorre.emilia@gmail.com

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Type:: Chapter

Pages:: 829–831

DOI:: https://doi.org/10.3920/9789086868605_370

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Differences in cooked meat tenderness between muscles are known to be partly due to their intramuscular connective tissue (IMCT) characteristics and may also be due to differences in muscle fibre type composition. The hypothesis that the activity of matrix metalloproteases (MMPs) responsible for IMCT degradation is related to the muscle fibre-type muscle distribution was studied in the present work. The majority of MMP expression within muscle is by the muscle fibres. Lamb gastrocnemius and sternocephalicus muscles showed differences in fibre-type distribution and the heat-solubility of IMCT collagen, and also showed differences in collagenase activity. A correlation of higher collagenase activity and a higher collagenase activity with the proportion of oxidative muscle fibres in the muscles supports the hypothesis that more oxidative muscle fibres tend to express more MMPs. This initial study on two lamb muscles will be extended to more lamb muscles and specific MMP activities to expand knowledge on this relationship.

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63rd International Congress of Meat Science and Technology

Nurturing locally, growing globally

E-Book ISBN:: 9789086868605

Publisher:: Wageningen Academic

Print Publication Date:: 15 Nov 2017

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- Life Sciences

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Differences in Muscle Fibre Type in Lamb Relate to Differences in Collagen Solubility and Peri-Natal Mmp Activity

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63rd International Congress of Meat Science and Technology

Nurturing locally, growing globally

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