Fig. 1From: Nutritional evaluation, antioxidant studies and quantification of poly phenolics, in Roscoea purpurea tubersHPTLC chromatogram of standards (R 1 protocatechuic acid, R 2 vanillic acid, R 3 syringic acid, R 4 kaempferol and R 5 ferulic acid) and sample (S methanolic extract) at 254 nm (a) and 365 nm (b).Back to article page