Table 1 Spectroscopic standardization of Quercetin in herbal medicines

1

V.C. Yeligar et al.

Development and Validation of UV Spectrophotometric Method for Simultaneous Estimation of Melatonin and Quercetin in Liposome Formulation

The UV spectra run in the range of 200–400 nm. The λmax of standard solution of melatonin (10 µg/ml) and Quercetin (10 µg/ml) was found to be 276 nm and 372 nm

2

Singh Upendra et al.

Simultaneous Estimation of Quercetin and Silymarin: Method Development and Validation

The UV spectrum run in the range of 400–200 nm. The maximum absorption found at 256 and 288 for quercetin and silymarin

3

Ginpreet Aneja et al.

Simultaneous Estimation of Piperine, Quercetin, and Curcumin in A Mixture using UV–Visible spectrophotometer and Method Validation

The standard stock solution of 1000 ppm of each drug in methanol and scanned in the range of 200–400 nm and λmax of quercetin, curcumin and piperine was found to be 371.31 nm, 424.68 nm, 343.76 nm respectively

4

A Viswanath et al.

UV spectrometry method for the estimation of Quercetin from Ipomoea sepiariaKoenig

The two-extraction scanned for the absorption maxima. Quercetin standard absorbs at 350 nm, acetone extract at 328.2 nm and methanol extracts absorbs at 323.4 nm

5

Marzanna Kurzawa et al.

Determination of Quercetin and Rutin in Selected Herbs and Pharmaceutical Preparations

The standard solution of quercetin and rutin was prepared in methanol and ethanol respectively. The absorbance was found at 425 nm for quercetin and 362 for rutin