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From the trial. It was found that khaosamarot next to the color the best from series 1. Grain coloration with a biological manner rolled copper sheet and ok using the zinc concentration of solution NaCl 20g. Here, water flavor enhancers etch 100mL and natural color from turmeric is the best, but there may be heavy metal residues in rice, rather than make the experiment series 3 dyeing with biological response of rice Board ok using a graphite stick khua. There are more quality and can eat into your body without harming the body.

The results showed that the rice can have the best color from the first experiment. Rice staining reactions using copper and zinc concentration of NaCl 20g per 100mL of water and staining extracts from turmeric best. But there could be more heavy metal residues in rice. The third experiment showed that the rice stained with redox reactions using graphite rods Pole. The more quality And can eat into the body without harm to the body.

From the experiment, it was found that the rice can be the best from the experiment 1 color combination. Dyeing rice with redox by using a sheet of copper and zinc that the concentration of dissolved NaCl 20g to water 100mL.But there may be more heavy metal residues in rice, rice combination dyeing experiment 3 reaction by H. รีดอกซ์ bar is graphite, thus the quality. And can eat into the body without harm to the body.