Effects of different soaking time on the extraction of gelatin from shortfin scad (Decapterus macrosoma) heads

Aim: Fish gelatin is one of the potential biopolymers that can be extracted from the connective tissues of any fish by-products such as skin, scale, bone, head, fin and frame. This study was carried out to optimise the best method of gelatin extracted from the heads of Shortfin scad (Decapterus macr...

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Bibliographic Details
Published in:Journal of environmental biology 2018-09, Vol.39 (5(SI)), p.888-894
Main Authors: Kuang, C.Y., Mohtar, N.F.
Format: Article
Language:English
Subjects:
Amino acids
Biopolymers
Bones
Catfish
Chemical properties
Citric acid
Collagen
Connective tissues
Decapterus macrosoma
Drinking water
Environmental impact
Environmental science
Fish
Food
Gelatin
Head
Lipids
Mackerel
Melting point
Melting points
Optimization
Organic chemistry
Physicochemical properties
Proteins
Researchers
Residues
Skin
Soaking
Sodium
Sodium hydroxide
Sulfuric acid
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Summary:Aim: Fish gelatin is one of the potential biopolymers that can be extracted from the connective tissues of any fish by-products such as skin, scale, bone, head, fin and frame. This study was carried out to optimise the best method of gelatin extracted from the heads of Shortfin scad (Decapterus macrosoma), further the effects of different soaking time on the physico-chemical properties of extracted gelatins was also determined. Methodology: The heads of shortfin scad (Decapterus macrosoma) were collected from fish processing industries and were cleaned prior to extraction. The cleaned heads of D. macrosoma were subjected to different soaking times (1,4,8 or 12 hrs) in 0.1M citric acid. Prior to these soaking times, the heads were placed in boiling water to remove excess flesh and the pre-treated with 0.2M of sodium hydroxide solution for one hour, rinsed with tap water, soaked in 0.05M of sulphuric acid for one hour and were then rinsed with tap water. Results: Results showed the optimum soaking time of D. macrosoma heads was obtained at 8 hr with the highest yield value of 1.70%, which was significantly higher compared to those soaked at 1, 4 or 12 hr (p
ISSN:0254-8704
2394-0379
DOI:10.22438/jeb/39/5(SI)/11