Identification of Anthocyanins and Optimization of Their Extraction from Rabbiteye Blueberry Fruits in Nanjing

Figure 2

Response surface analysis of blueberry anthocyanin extraction. The effect of extraction time and ethanol concentration on extraction anthocyanin yield: (a) response surface plot and (b) contour plot. The effect of extraction time and liquid-to-solid ratio on the anthocyanin extraction yield: (c) response surface plot and (d) contour plot. The effect of ethanol concentration and liquid-to-solid ratio on extraction anthocyanin yield: (e) response surface plot and (f) contour plot.

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