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. 2020 Oct 21;5(43):27990–28000. doi: 10.1021/acsomega.0c03396

Figure 7.

Figure 7

(a) Response surface plots showing the percentage of polyphenol content from aqueous ethanol extraction at varying extraction temperatures and times (C = 60%, V = 20). (b) Response surface plots showing the percentage of polyphenol content from aqueous ethanol extraction at varying solvent concentrations and extraction temperatures (t = 90 min, V = 20). (c) Response surface plots showing the percentage of polyphenol content from aqueous ethanol extraction at varying liquid–solid ratios and extraction temperatures (t = 90, C = 60%).