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. 2024 Dec 12;13(24):4022. doi: 10.3390/foods13244022

Figure 1.

Figure 1

FTIR spectra of shrimp shell protein hydrolysate (SSPH) prepared using alcalase (UAH) or papain (UPH) and their polyphenol conjugates. Where A and P indicate UAH and UPH; E, C, and G indicate EGCG, catechin; and gallic acid, respectively.