As shown in Figure 2 , upon the addition of F-68, a nonsignificant trend in change was observed in the average droplet size of the emulsion, and the ζ-potential decreased slightly.
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Preparation, Characterization, and Safety Evaluation of a Submicron Emulsion Processed Using High-Pressure Homogenization to Protect Bitter Melon Seed Oil.
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The sentences
When the pH was between 5 and 9, the average droplet size, ζ-potential, and PDI showed a trend of an initial decrease and subsequent increase.