As shown in Figure 2 , three antioxidant indices showed an increasing trend as the dose of alkaline protease increased.
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Separation and Identification of Highly Efficient Antioxidant Peptides from Eggshell Membrane.
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The sentences
When the concentration of Na 2 SO 3 was 40 mM, the DPPH• − scavenging capacity of ESM-EH reached its maximum (45.87%) but showed a decreasing trend with the increase of Na 2 SO 3 concentration (>40 mM).