Parameters affecting the isolation of collagen from squid (Illex argentinus) skins

被引:126
作者
Kolodziejska, I [1 ]
Sikorski, ZE [1 ]
Niecikowska, C [1 ]
机构
[1] Gdansk Univ Technol, Fac Chem, Dept Food Preservat, PL-80952 Gdansk, Poland
关键词
D O I
10.1016/S0308-8146(98)00251-9
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The solubility of collagen from squid (Illex argentinus) skin in salt solutions and the efficiency of removal of skin chromatophores were determined. Homogenization of minced squid skin in 5-15% NaCl solution at 0 degrees C solubilized 35-24% of total amount of crude protein and caused 2-5% loss of collagen but was not effective in removing pigments from the skin. The treatment of whole squid skins in 5-15% NaCl solutions at room temperature led to separation of the chromatophores, but the loss of soluble collagen was 57-16%. Collagen, soluble in dilute acid solutions was isolated from squid skins by 24 h soaking in 10% NaCl solution at room temperature, washing with water and bleaching for 48 h in 1% H2O2 in 0.01 M NaOH. The yield of collagen was 53%. It could be increased to 90% by using NaOH solution at pH 11.5 instead of 10% NaCl but the isolate was less soluble in dilute acid and the viscosity of 0.5% dispersion of collagen was four times lower. The rancid off-odour could be prevented by adding 0.5% of a nonionic detergent to all solution used in the procedure. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:153 / 157
页数:5
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