Effects of NaCl/KCl ratios on structural and properties changes in soy‐potato protein mixed gel

Summary To reduce the sodium salt content in protein gel‐based foods, this study investigated the effects of different Na‐K ratios on the gelation properties and structural changes of soy protein isolate (SPI) and potato protein isolate (PPI) composite gels. The results showed that the composite gel...

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Veröffentlicht in:International journal of food science & technology 2024-11, Vol.59 (11), p.8259-8270
Hauptverfasser: Sun, Ying, Wang, Long, Lu, BingLin, Zhou, Bin, Liu, Shen, Chen, Fenglian, Jiang, Lianzhou, Zhao, Juyang, Zhu, Xiuqing
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container_end_page 8270
container_issue 11
container_start_page 8259
container_title International journal of food science & technology
container_volume 59
creator Sun, Ying
Wang, Long
Lu, BingLin
Zhou, Bin
Liu, Shen
Chen, Fenglian
Jiang, Lianzhou
Zhao, Juyang
Zhu, Xiuqing
description Summary To reduce the sodium salt content in protein gel‐based foods, this study investigated the effects of different Na‐K ratios on the gelation properties and structural changes of soy protein isolate (SPI) and potato protein isolate (PPI) composite gels. The results showed that the composite gel properties were further enhanced with increasing Na‐K ratio in the SPI/PPI gel system. Specifically, when the Na‐K ratio was 1:1, the SPI/PPI composite gel exhibited the highest gel strength, gel elasticity, WHC, storage modulus (G′), and β‐sheet content, whereas the α‐helix content and β‐turn content were the lowest. Scanning electron microscopy images revealed a dense and uniform network structure of the composite gel. The addition of low concentrations of Na+ and K+ improved the network structure and water‐holding capacity of the SPI/PPI gel during the heat‐induced gelation process. However, excessively high Na‐K ratios weakened the gel properties. Mechanism diagram of SPI/PPI composite gel induced by different ratios of NaCl/KCl
doi_str_mv 10.1111/ijfs.17528
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source Wiley Online Library Journals Frontfile Complete; Oxford Journals Open Access Collection
subjects electron microscopy
food science
Gel property
gel strength
Gelation
Gels
Low concentrations
Potassium chloride
potato protein
potato protein isolate
Potatoes
Proteins
salt content
Scanning electron microscopy
Sodium
Sodium chloride
Sodium salts
sodium substitution
soy protein isolate
Storage modulus
technology
water holding capacity
title Effects of NaCl/KCl ratios on structural and properties changes in soy‐potato protein mixed gel
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