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Published on: November 18, 2022
Effects of varying pH levels on the structure of glycosylated chickpea protein-citrus pectin conjugates and its high
Xiyu Yu1, Jian Zhang1, Lijuan Chen2
1School of Food Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, China; Key Laboratory of Characteristics Agricultural Product Processing and Quality Control (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Shihezi University, Shihezi, Xinjiang, China; Key Laboratory for Food Nutrition and Safety Control of Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang 832000, China.
Abstract:
In this study, we investigated the structural characteristics, emulsifying properties, and oil-water interface behaviors of chickpea protein isolate (CPI) and CPI-CP (citrus pectin) conjugates at different pH values (3.0, 5.0, 7.0, 9.0, and 11.0). The structure and functional properties of CPI-CP conjugates were observed to undergo changes in response to variations in pH values. The results confirmed that, compared with CPI and CPI-CP mixture, the CPI-CP conjugates exhibited stronger resistance to interfacial disruption and better adsorption ability. Moreover, compared with the other pH conditions, the high internal phase emulsions (HIPEs) stabilized by CPI-CP conjugates exhibited a characteristic of relatively smaller oil droplet size under the influence of pH 5.0. Related results showed that glycosylation modification could improve the emulsifying properties of CPI under different pH conditions.
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