Extraction of collagen from catfish (Clarias gariepnus) waste and determination of its physico-chemical properties / Normah Ismail and Nurul Asyiraf Abdul Jabar

Ismail, Normah and Abdul Jabar, Nurul Asyiraf (2012) Extraction of collagen from catfish (Clarias gariepnus) waste and determination of its physico-chemical properties / Normah Ismail and Nurul Asyiraf Abdul Jabar. Scientific Research Journal, 9 (1). pp. 29-42. ISSN 1675-7009

[img]
Preview
Text
AJ_NORMAH ISMAIL SRJ 12 1.pdf

Download (735kB) | Preview

Abstract

Collagen was extractedfrom catfish (Clarias gariepnus) waste using 0.5M acetic acid and its subsequent precipitation in 2.6M NaCI. The resultant collagen was analysed with respect to its moisture content and physicochemicalproperties including yield, pH, protein content, colour, odour and thermal stability. Ayieldof16.4% andpositive collagen attributes indicate that catfish waste has potential as a collagen source. The snowy white, crystal-like and light textured collagen comprises of5.97% protein and 0.46% moisture, and exhibits a pH of4.75. Sensory evaluation indicates that the collagen has a slight fishy odour. Viscosity analysis indicates a steady decrease with increasing temperature over the range considered (20-50°C). The pale colour exhibited and limited odour emitted by the extracted collagen indicate that catfish waste collagen could be applied in the food industry without resulting in any undesirable food products attributes. Differential Scanning Calorimetry (DSC) analysis indicated that the collagen exhibits good thermal stability and denatures at a high temperature in a similar manner to mammalian collagen

Item Type: Article
Uncontrolled Keywords: collagen, catfish waste, extraction, Clarias gariepnus
Subjects: Q Science > QP Physiology > Animal biochemistry > Collagen
S Agriculture > SH Aquaculture. Fisheries. Angling > Catfishes
Divisions: Research Management Institute (RMI)
Depositing User: Staf Pendigitan 1
Date Deposited: 22 Sep 2015 05:00
Last Modified: 30 May 2016 03:01
URI: http://ir.uitm.edu.my/id/eprint/12955

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year