The manuscript titled "Effects of NaCl/KCl Ratios on Structural and Properties Changes in Soy-Potato Protein Mixed Gel" presents a thorough and well-conducted investigation into the impact of varying NaCl/KCl ratios on the structural and functional properties of SPI/PPI composite gels. The study is relevant and contributes valuable insights into reducing sodium content in food products without compromising their functional properties, which is a significant concern in the food industry. However, there are several areas where the manuscript could be improved:
Major comments:
1. The study lacks a sensory evaluation component, which is critical for understanding the consumer acceptance of the modified protein gels. This is especially important given the potential for a bitter taste associated with KCl, which could significantly impact consumer acceptability.
2. The manuscript does not include an analysis of other important parameters, such as the color of the gel.
3. There is a need for a more comprehensive discussion that compares the study’s findings with available literature.
4. The data are not well-integrated. For example, there should be a connection between gel strength, water-holding capacity (WHC), and protein solubility. The authors should focus on improving the results and discussion sections to make these links clearer.
5. Line 55: The protein content and composition of natural products can vary between batches. Why did the authors follow the old study (Wang et al. 2022)? This is not scientifically robust. Furthermore, it is unclear if the study was conducted in your lab.
6. Line 48: Explain how it is possible to conduct rheological tests on gel samples, if conducted in such a way, then it is wrong.

Minor comments
- The abstract is not informative enough. It should include some numerical values. Furthermore, the manuscript is missing a conclusion.
- The phrase “increasing with Na-K ratios” is unclear. Please specify which component increases with Na-K ratios.
- There are several minor issues throughout the manuscript:
- Line 19: How does your study differ from Lv et al. (2023)? Please extend the discussion.
- Line 20: Use "PPI" consistently throughout the manuscript.
- Table 2 and Line 113: What is the purpose of this table? Only one line discusses it.
- Figures and tables require extensive improvement:
- Captions need footnotes.
- Descriptions of statistical analyses and n values are missing.
- Figure citations are missing in the data.
-The figures are too small.