Journal
LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 41, Issue 3, Pages 414-419Publisher
ELSEVIER
DOI: 10.1016/j.lwt.2007.03.027
Keywords
gelatin; channel catfish; response surface method; viscoelastic properties
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Response Surface method was used to determine the Optimum operating conditions for extracting the gelatin from channel catfish skin. The optimal conditions for maximum gel strength are 68.8 h for the time of treatment with calcium hydroxide solution, 43.2 degrees C for the extraction temperature, 5.73 h for the extraction time with hot water. The gelatin from channel catfish skin showed a high gel strength, 276 +/- 5g. Compare to porcine skin gelatin, the gelatin from channel catfish skin has different amino acids composition and a lower L thermo-stability. (C) 2007 Swiss Society of Food Science and Technology. Published by Elsevier Ltd. All rights reserved.
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