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Published on: February 10, 2018
Evaluation of chickpea protein isolate as a partial replacement for phosphate in pork meat batters: Techno-functional
Yu Wang1, Jing-Jing Yuan2, Ke Li1
1College of Food and Bioengineering, Zhengzhou University of Light Industry, Zhengzhou, Henan 450000, China; Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Zhengzhou, Henan 450000, China.
Abstract:
The effects of chickpea protein isolate (CPI, 0.5-2 %, w/w) on the techno-functional properties of 50 % reduced-phosphate pork meat batters (RPMBs) were explored. The results showed that 1.5-2 % CPI significantly decreased the cooking loss but significantly increased the emulsion stability, hardness, gumminess, chewiness and yellowness (b*) of RPMBs (P < 0.05). CPI altered molecular characteristics of RPMBs, as demonstrated by the increased storage modulus (G'), the conversion of free water into immobilized water, the reduced intensities of the aliphatic residue Raman bands, the decreased α-helical structure and the formation of well-organized gel networks with evenly distributed small fat globules. Principal component analysis and Pearson's correlation analysis indicated that CPI-induced changes in RPMB techno-functional properties were closely related to molecular characteristics. Hierarchical cluster analysis suggested that RPMBs supplemented with 1.5-2 % CPI were highly similar in techno-functional properties to the high-phosphate group. Therefore, CPI may potentially be used to develop reduced-phosphate meat products.
