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Table 3 Method validation of chemical markers in R. purpurea tubers methanol extract through HPTLC

From: Nutritional evaluation, antioxidant studies and quantification of poly phenolics, in Roscoea purpurea tubers

Parameters

Protocatechuic acid

Vanillic acid

Syringic acid

Kaempferol

Ferullic acid

Linearity range (ng)

100–600

100–600

100–600

100–600

100–600

Regression coefficient (r2)

0.993

0.999

0.999

0.999

0.992

LOD (ng)

35

35

35

35

35

LOQ (ng)

100

100

100

100

100

Rf

0.48

0.60

0.53

0.59

0.58

Wavelength (nm)

305

305

285

305

305

  1. (Values are mean, n = 3).
  2. ng nanogram.