Journal
FOOD CHEMISTRY
Volume 152, Issue -, Pages 276-284Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2013.11.109
Keywords
Seabass; Gelatin; Extraction; Gel strength; Setting
Funding
- Royal Golden Jubilee Ph.D. Program to Sittichoke Sinthusamran [PHD/0053/2553]
- Graduate School, Prince of Songkla University, Thailand
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Characterisics and gel properties of gelatin from seabass skin, as influenced by extraction conditions, were studied. Yields of gelatin extracted at 45 and 55 degrees C for various times were 51.6-57.3% and 62.0-66.4% (dry weight basis), respectively. All gelatins contained beta-chain and alpha-chains as the predominant components and showed a high imino acid content (198-202 residues/1000 residues). Generally, the gel strength of gelatins decreased as the extraction temperature and time increased. Gelatin extracted at 45 degrees C for 3 h exhibited the highest gel strength (369 g). Gelling and melting temperatures for seabass skin gelatin were 19.5-20.0 and 26.3-27.0 degrees C, respectively. All gelatins could be set at 25 degrees C within 30 min, however gelatins extracted at 45 degrees C had a shorter setting time than those extracted at 55 degrees C (P < 0.05). Gelatin from seabass skin showed a higher gel strength than bovine gelatin and could be used as a potential replacement for land animal gelatins. (C) 2013 Elsevier Ltd. All rights reserved.
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