Quality of the skin of salmon, Salmo solaris : resistance test and hydroxyproline

Authors

  • Maria Luiza Rodrigues de Souza Franco Universidade Estadual de Maringá
    • Cláudia Mari Uchimura
      • Marcellie Prado Universidade Estadual de Maringá
        • Edson Minoru Yajima Universidade Estadual de Maringá
          • Eliane Gasparino Universidade Estadual de Maringá
            • Stefania Caroline Claudino da Silva Universidade Estadual de Maringá

              DOI:

              https://doi.org/10.32360/acmar.v46i1.894

              Keywords:

              salmon, fish leather, physico-mechanical tests, collagen fibers, tensile and elongation tests, progressive tearing

              Abstract

              This study evaluated the hydroxyproline content and resistance through physical-mechanical tests of salmon  skins submitted to tanning with chromium salts. After the skin-tanning samples were removed in the longitudinal and  transverse axes to the length of the fish’s body. The samples were distributed in a completely randomized design with two  treatments: T1 - samples in the longitudinal direction and T2 - samples in the transverse direction. For the tests of tensile  resistance determination, elongation and progressive tearing, the EMIC dynamometer was used, with the speed of sepa- ration between loads of 100 ± 10mm/min in a climatized environment (23 ± 2ºC and RH 50 ± 5 %) for 48 hours. The  thickness of the leathers analyzed ranged from 0.56 to 0.78 mm. The longitudinal-axis leathers showed greater thickness  than transverse-axis ones. The leather showed mean values for tensile resistance 10.90 N/mm 2 , elongation of 58.33% and  progressive tearing of 19.68 N/mm. The salmon skin showed a content of 1.23% hydroxyproline. This leather should be  used only in the general product manufacturing.

              Author Biographies

              • Maria Luiza Rodrigues de Souza Franco, Universidade Estadual de Maringá
                Profa. Dra. do Departamento de Zootecnia da Universidade Estadual de Maringá.
              • Cláudia Mari Uchimura
                Médica Veterinária.
              • Marcellie Prado, Universidade Estadual de Maringá
                Pós-Graduação em Zootecnia da Universidade Estadual de Maringá.
              • Edson Minoru Yajima, Universidade Estadual de Maringá
                Doutor em Engenharia Química pela Universidade Estadual de Maringá.
              • Eliane Gasparino, Universidade Estadual de Maringá
                Profa. Dra. do Departamento de Zootecnia da Universidade Estadual de Maringá.
              • Stefania Caroline Claudino da Silva, Universidade Estadual de Maringá
                Pós-Graduação em Zootecnia da Universidade Estadual de Maringá.

              Published

              2013-06-01

              Issue

              Section

              Artigos originais

              How to Cite

              Quality of the skin of salmon, Salmo solaris : resistance test and hydroxyproline. (2013). Arquivos De Ciências Do Mar, 46(1). https://doi.org/10.32360/acmar.v46i1.894