Native varieties valuable nutritional rice more general and the extract ข้าวม use. This study was made to test the effectiveness of extracts in rice resistant to damage DNA in cells (Allium aromatic roots.By using the techniques of comet, or single cell gel electronic iontophoresis. Using hydrogen peroxide as a substance to destroy DNA. Root onions soaked in the control and experimental sets for 5 hours controller is divided into 2 series, to Positive control.And 80 160 mm, respectively, and the use of rice Negative control effective against being destroyed mixed together with hydrogen peroxide. The experiment sample extract rice mixed with hydrogen peroxide.The results showed that the concentration 160 mm suitable to a controlled substance and extract of rice 4 samples found no damage DNA. Rice extract 5 were found to destroy DNA 12%.49 and extract rice 3 were found to destroy DNA averaged 40.93 so rice extract some ชนิดมีประสิทธิภาพ to resist damage DNA
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