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Document IIF

Évaluation des hydrolysats de gélatine provenant de la peau du cohana (Nemipterus hexodon) en tant que cryoprotecteur pour la prévention de la dénaturation de l'actomyosine naturelle de la daurade royale soumise à différents cycles de congélation-décongélation.

Assessment of gelatin hydrolysates from threadfin bream (Nemipterus hexodon) skin as a cryoprotectant for denaturation prevention of threadfin bream natural actomyosin subjected to different freeze-thaw cycles.

Auteurs : KUEPETHKAEW S., KLOMKLAO S., BENJAKUL S., BETTI M., SIMPSON B. K.

Type d'article : Article de la RIF

Résumé

Gelatin hydrolysates prepared from threadfin bream skin (GH) using lizardfish stomach pepsin (GHLP) with different degrees of hydrolysis (DHs: 10–40%) were studied as a potential alternative to commercial cryoprotectant (sucrose/sorbitol blend; SuSo, 1:1) used in frozen surimi. The characteristics of threadfin bream natural actomyosin (NAM) containing 8% GHLP with different DHs or SuSo were compared to control NAM before and after freeze-thaw treatment. After 3 and 6 freeze-thaw cycles, all present cryoprotectants retarded the protein changes. Among all samples, the highest Ca2+-ATPase activity, total sulfhydryl and solubility with the coincidental lowest disulfide bond content were observed in NAM added with GHLP having 20% DH after repeated freeze-thawing. Also, GHLP could prevent lipid oxidation in NAM as shown by the lower TBARS value. When cryoprotective properties of GHLP with 20% DH and GH prepared by papain (GHP) (DHs: 10–40%) were compared, the cryoprotectant properties of GHLP were similar to that of GHP. However, GHP with 10% DH exhibited a higher protective effect on protein denaturation. Hence, both GHLP and GHP with suitable DH can be a new generation cryoprotectant with the lower sweetness in surimi products.

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Format PDF

Pages : 19-27

Disponible

  • Prix public

    20 €

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    Gratuit

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Détails

  • Titre original : Assessment of gelatin hydrolysates from threadfin bream (Nemipterus hexodon) skin as a cryoprotectant for denaturation prevention of threadfin bream natural actomyosin subjected to different freeze-thaw cycles.
  • Identifiant de la fiche : 30030328
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 143
  • Date d'édition : 11/2022
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2022.06.027
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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