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Molecular characteristics and properties of gelatin from skin of seabass with different sizes

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Title: Molecular characteristics and properties of gelatin from skin of seabass with different sizes
Authors: Sinthusamran, Sittichoke Browse this author
Benjakul, Soottawat Browse this author
Kishimura, Hideki Browse this author →KAKEN DB
Keywords: Seabass
Gel strength
Setting time
Gelling temperature
Issue Date: Feb-2015
Publisher: Elsevier
Journal Title: International Journal of Biological Macromolecules
Volume: 73
Start Page: 146
End Page: 153
Publisher DOI: 10.1016/j.ijbiomac.2014.11.024
PMID: 25475845
Abstract: Gelatin was extracted from the skin of seabass (Lutes calcarifer) with different average sizes (2, 4 and 6 kg/fish), termed G2, G4 and G6, respectively and their characteristics and functional properties were determined. Yields of G2, G4 and G6 were 38.22, 40.50 and 43.48% (based on dry weight), respectively. G2 contained cc-chains as dominant component, whilst G4 and G6 comprised alpha-, beta- and gamma-chains with a larger content of high MW cross-links. All gelatins had the similar imino acid (hydroxyproline and proline) content. Net charge of G2, G4 and G6 became zero at pH of 6.73, 6.41 and 7.12, respectively. Amongst all gelatin samples, G6 exhibited the highest gel strength (321.5g) (p < 0.05), but had the lowest turbidity (p < 0.05). Gels of G6 sample had the lower L*-value but higher a*-, b*- and Delta E*-value, compared with others. Gelling and melting temperatures of all gelatins were 17.09-19.01 and 26.92-28.85 degrees C, respectively. Furthermore, all gelatins were able to set at room temperature, regardless of size of seabass used. G6 had the shorter setting time at room temperature than others. Therefore, size of seabass, in which skin was used for gelatin extraction, had the impact on yield, composition and properties of resulting gelatin. (C) 2014 Elsevier B.V. All rights reserved.
Type: article (author version)
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 岸村 栄毅

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