Volume 7, Issue 26 (2010)
FSCT 2010, 7(26): 21-32 |
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Improvement of lizard fish (Saurida tumbil) skin gelatin properties by the coenhancers magnesium sulphate, glycerol, Katira, sucrose and ammonium nitrate. FSCT 2010; 7 (26) :21-32
URL: http://fsct.modares.ac.ir/article-7-11430-en.html
URL: http://fsct.modares.ac.ir/article-7-11430-en.html
Abstract: (5377 Views)
Fish skin gelatin could be substitutes for mammalian gelatins. But fish gelatins have low gelling and melting temperatures. In this research improvement of functional properties of lizard fish skin gelatin (melting point, gelling point and bloom) evaluated by mgso4 (0/1 and 0/5 M), glycerol (15%), NH4NO3 (5%), Katira (0/5 and 1/2%) and sucrose in three pH (4, 5, 6). All materials have significant different (p<0/05) to the control. Based on results glycerol, katira (0/5%) and sucrose have maximum effect on improvement of functional properties and pH 6 > 5 > 4 had enhancer effects on the variables .This improvement of gel properties is due to the fact that this materials stabilizes hydrogen bonding and in higher pH the gelatin pH is closer to the Isoelecteric point of the protein. Katira is a natural material and due to minimum usage, has the best effect. Results of this research registerd in the Iran Invention Office (number 48947).
Keywords: glycerol, Key words: Gelatin, Lizard fish, Isoelectric point, Functional properties, Katira
Received: 2008/08/25 | Accepted: 2008/11/24 | Published: 2012/08/25
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