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  Indian J Med Microbiol
 

Figure 3: Response surface graphs for the effects of extraction time, extraction temperature, and methanol concentration on the flavonoid yield of tartary buckwheat: (a) Temperature and Time. (b) Time and methanol concentration. (c) Temperature and methanol concentration

Figure 3: Response surface graphs for the effects of extraction time, extraction temperature, and methanol concentration on the flavonoid yield of tartary buckwheat: (a) Temperature and Time. (b) Time and methanol concentration. (c) Temperature and methanol concentration