African Journal of Biotechnology
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Article Number - 871A32F62233


Vol.16(1), pp. 1-9 , January 2017
DOI: 10.5897/AJB2013.13121
ISSN: 1684-5315



Full Length Research Paper

Extraction and characterisation of gelatin from the skin of striped catfish (Pangasianodon hypophthalmus) and studies on its colour improvement



Prabjeet Singh*
  • Prabjeet Singh*
  • Department of Food Technology, Prince of Songkla University, Thailand.
  • Google Scholar
Soottawat Benjakul
  • Soottawat Benjakul
  • Department of FRM, College of Fisheries, GADVASU, Ludhiana-Punjab 141004, India.
  • Google Scholar







 Received: 05 August 2013  Accepted: 27 June 2016  Published: 04 January 2017

Copyright © 2017 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


Functional properties of gelatin from skin of striped catfish with and without bleaching for 48 h by 5% H2O2 (w/v)) were studied. Gelatin from skin bleached with 5% H2O2 for 48 h showed the highest yield (16.18 g). Bleaching not only improved the colour of gelatin gel by increasing the L* (lightness)-value and decreasing a*(redness/greenness)-value, but also enhanced the bloom strength and the emulsifying and foaming properties of the resulting gelatin. Fourier transform infrared spectroscopic study showed higher intermolecular interactions and denaturation of gelatin from bleached skin than that of the control. These results indicated that hydrogen peroxide most likely induced the oxidation of gelatin, resulting in the formation of gelatin cross-links, hence improved functional properties.

Key words: Gelatin, catfish, color, bloom strength.

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APA Singh, P., & Benjakul, S. (2017). Extraction and characterisation of gelatin from the skin of striped catfish (Pangasianodon hypophthalmus) and studies on its colour improvement. African Journal of Biotechnology , 16(1), 1-9.
Chicago Prabjeet Singh, and Soottawat Benjakul. "Extraction and characterisation of gelatin from the skin of striped catfish (Pangasianodon hypophthalmus) and studies on its colour improvement." African Journal of Biotechnology 16, no. 1 (2017): 1-9.
MLA Prabjeet Singh, and Soottawat Benjakul. "Extraction and characterisation of gelatin from the skin of striped catfish (Pangasianodon hypophthalmus) and studies on its colour improvement." African Journal of Biotechnology 16.1 (2017): 1-9.
   
DOI 10.5897/AJB2013.13121
URL http://academicjournals.org/journal/AJB/article-abstract/871A32F62233

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