FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (23 ): 138-142.doi: 10.7506/spkx1002-6300-200923030

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Rheological Properties of Collagens in Scale of Grass Carp

WANG Hai-bo,WANG Meng-jin,ZHANG Han-jun,XU Qun-ying   

  1. School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China
  • Received:2009-08-31 Online:2009-12-01 Published:2010-12-29
  • Contact: WANG Hai-bo E-mail:wanghaibo@whpu.edu.cn

Abstract:

Acid-soluble collagens (ASC) and pepsin-soluble collagens (PSC) were extracted from scales of grass carp at the low temperature condition. The rheological properties of ASC and PSC were also determination. Results indicated that a non- Newtonian pseudoplastic flow behavior was observed in ASC and PSC. Under the condition of same concentration, the viscosity order of several kinds of collagens was ASC, PSC and Glutin. The rheological properties of ASC and PSC were significantly affected by concentration, temperature and pH. At the concentration of 0.6%, ASC and PSC displayed a liquid behavior without elasticity behavior of gel. However, denaturalization of collagens through heating resulted in an enhancement of elasticity behavior and reduction of viscous behavior in collagens.

Key words: scale of grass carp, collagen, rheological property

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