A profitable use of by-products of the poultry slaughter. The tanning of hen’s feet skins

Authors

  • Juan Iade Vergara Departamento de Textiles, Lana Bruta, Tops y Cueros, LATU, Uruguay
  • Susana Casanova Área de Patología y Producción Avícola, Facultad de Veterinaria, Universidad de la República, Uruguay.
  • Leticia Losada Facultad de Veterinaria, Universidad de la República, Uruguay.
  • Andrés Larrosa Facultad de Veterinaria, Universidad de la República, Uruguay

DOI:

https://doi.org/10.26461/07.12

Keywords:

Leather, chicken, tanned

Abstract

The aim of this development is to add value to one of the by-products of the poultry slaughtery, the chicken’s feet. The process began with the skinning of the chicken’s feet, which underwent a tanning process to obtain a leather characterised for its similarity with exotic leathers such as the reptile ones. To facilitate its possible production by artisanal means we designed a more environmental-friendly process, eliminating the use of sodium sulfide in the stages corresponding to dehairing and liming, followed by a chromium-free tanning based on a combination of vegetable tannins and synthetic retanning agents. Confirmation of the tanning of the skins was performed by measuring the shrinkage temperature of leathers, obtaining a value of 80 °C, higher than those of the raw hides. Physical properties were evaluated to characterize the product, obtaining tensile strength values of 0,65 kg/mm2 and a tear resistance of 2,10 kg/mm.

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References

ADZET ADZET, J. M. Química-técnica de tenería. Barcelona: Romanyá/Valls, 1985. ISBN: 84-398-3375-x

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CLARA, M. Aves [En línea]. Montevideo: Facultad de Ciencias, 2000. [Consulta: 12 de junio de 2012]. Disponible en: http://zvert.fcien.edu.uy/avesrep.doc.

INTERNATIONAL STANDARD ORGANIZATION (Switzerland). ISO 3376 (IULTCS/IUP 6): Leather. Physical and mechanical tests. Determination of tensile strength and percentage extension. Geneva: ISO, 2002.

INTERNATIONAL STANDARD ORGANIZATION (Switzerland). ISO 3377-2 (IULTCS/IUP 8): Leather. Physical and mechanical tests. Determination of tear load Part 2: Double edge tear. Geneva: ISO, 2002.

MOREIRA, M. V.; TEIXEIRA, R.C. Estado da arte tecnológico em processamento do couro: revisão bibliográfica no âmbito internacional. Porto Alegre: Centro Nacional de Tecnologias Limpas, 2003.

SATRA TECHNOLOGY CENTRE. Satra TM17 shrinkage temperature of leather. Kettering: SATRA, 2012.

Páginas web sugerida: Cueronet - http://www.cueronet.com/

Published

2012-10-24

How to Cite

Iade Vergara, J., Casanova, S., Losada, L., & Larrosa, A. (2012). A profitable use of by-products of the poultry slaughter. The tanning of hen’s feet skins. INNOTEC, (7 ene-dic), 75–81. https://doi.org/10.26461/07.12

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Section

Articles