New watermelon has grown in the market But many people are worried about whether they have been given paints with the help of injection in the watermelon. Recently, under the supervision of Chemistry Department of Chemistry Department of University of Dhaka, Nilufar Nahar developed this method of color diagnosis; Tanahul Islam and Ahsan Habib Khandaker, fourth-year students of the same department.
To know whether there is a color inside the watermelon, cut a small cut of watermelon bought from the market. Then it must be removed from the chip. The amount of quantity of watermelon juice will be taken by putting the juice in a transparent glass or a long container, and the amount of coconut oil is to be given. Then the solution must be shaken for a minute.
If the bottom layer of the pot solution becomes white like water for five minutes, then you need to understand that there is no artificial color in the watermelon. If the artificial color of the melon, the color below will be red or pink. Because, artificial colors do not dissolve in watermelon water.
Researchers say that there are natural colors (lycopene) in watermelon. This organic compound, which dissolves with oil (organic solvent), flows through the yellow color on the tube. And the remaining watermelon water (inorganic solvents) falls on the bottom. Artificial colors do not dissolve with the lymphocytes of the watermelon and remain on the lower layer.