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Extraction of natural dye (Flavonoid) from common marigold flower | Abstract
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Journal of Natural Product and Plant Resources

Abstract

Extraction of natural dye (Flavonoid) from common marigold flower

Author(s): Venkatesh D. Vandekar

I tested the type of solvent to be used on sonicator and found out that alkaline solvent gives darker colour, while acids give lighter colour, and alcohol tend to give somewhat original colour of the flower petals from these batches I could conclude that ethanol was the best solvent. I tested the ratio of natural source (gm) and solvent (ml) on heating mantle and found that ratio of 1:20 was better than ratio of 1:10 and temperature of 80°C and 100°C were optimum. I carried out batches on ultrasound probe and found that temperature of 50°C was optimum. After this batches on microwave reactor were carried out and found that power of 320 watt was optimum. In soxhlet extraction optimum time was 1 & ½ hour and after 1 hour solution retained was constant. Pre mordanting dyeing was done for all the different methods.