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  Indian J Med Microbiol
 

Figure 5: Calibration curve of phenolic acids (a) protocatechuic acid (b) syringic acid (c) ferulic acid (d) rutin (e) apigenin, and (f) kaempferol in whole extract of Roscoea purpurea rhizome

Figure 5: Calibration curve of phenolic acids (a) protocatechuic acid (b) syringic acid (c) ferulic acid (d) rutin (e) apigenin, and (f) kaempferol in whole extract of <i>Roscoea purpurea</i> rhizome