Extraction of dye
The yield of the dye per 100 g of the plant specimen obtained under various extraction conditions are summarized in the Table 1. Yield of the dye can be improved by using techniques like rotary evaporator for concentration of the dye. Extraction of dye from Marigold flower employing aqueous/organic solvent extraction method for 5h/2.5h resulted in 3.5 and 4.6 g per 100 g of the dry flower respectively
From table 1, it was observed that the extraction of dye was a function of pH.