FOOD SCIENCE ›› 2013, Vol. 34 ›› Issue (23): 103-107.doi: 10.7506/spkx1002-6630-201323022

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Effect of High Pressure Cooking on Bone Composition and Strength of Chicken Skeleton

CHAI Xiang-hua1,HE Wen-long1,WU Ke-gang1,*,LUO Ji1,WANG Sheng-li2,PAN Xian-zong2   

  1. 1. Faculty of Chemical and Light Industry, Guangdong University of Technology, Guangzhou 510006, China;
    2. Bewaga Foods Co. Ltd., Dongguan, Dongguan 523416, China
  • Received:2012-11-13 Revised:2013-11-04 Online:2013-12-15 Published:2014-01-03
  • Contact: WU Ke-gang E-mail:373402917@qq.com

Abstract:

High-pressure-cooked chicken skeletons were investigated for bone protein, fat and calcium contents and
firmness in comparison to raw chicken skeletons. The results showed that the total content of protein and fat as major
chicken bone components and calcium content were both lower in high-pressure-cooked chicken skeletons, especially when
high-pressure cooking in the presence of water was used. Moreover, bone strength became weak and the cellular structure
and small holes in the bone surface disappeared after high-pressure cooking under SEM observation. This finding explains
why the decrease in bone strength may be caused mainly by the losses of bone components and the structural collapse of
chicken bones as observed under SEM after high-pressure cooking of chicken skeletons. Orthogonal array design was used
to establish the optimal high-pressure cooking conditions for chicken skeletons: cooking with a bone/water ratio of 1:4 at
0.12 MPa for 45 min. The firmness of cooked chicken skeletons under the optimized conditions was 134.41 N.

Key words: chicken skeleton, high pressure cooking, firmness

CLC Number: