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. 2021 May 21;14(11):2724. doi: 10.3390/ma14112724

Figure 2.

Figure 2

Response surface contour showing combined effects of enzymatic treatment conditions on flavonoid content (TFC). (A) enzyme concentration and pH; (B) time and pH; (C) temperature and pH; (D) time and enzyme concentration; (E) temperature and enzyme concentration; (F) temperature and time.