TLC profile of wild type extract and callus varieties of purple. Stationary phase: Silica GF254 Mobile phase: Toluene: Ethyl Acetate: Formic Acid: Water (3: 3: 1: 0.2).

DU1: leaf ethanol extract of purple varieties (wild type); BU1: stem ethanol extract of purple varieties (wild type); DU2: ethyl acetate extract of purple varieties (wild type); BU2: stem ethyl acetate extract of purple varieties (wild type); DU3: acetone extract of purple varieties (wild type); BU3: stem acetone extract of purple varieties (wild type).