About the test using local bleach plant To study the suitable solvent extraction in color from plants. Study on optimum ratio of solvent to care limited color of local plants that can test of bleaching.The project was conducted as follows. When 1 compare solvent suitable การสกัดสี from plants, when 2 solvent ratio was optimum color extraction from plants. When 3.When 4 study the efficiency of detection technique of test strips that bleach extracted from pea flowers in foods and comparison with the test set hydrogen sulfide, drink! (bleach)
.Showed that the proper solvent used in the extraction of local plants is hot water in the ratio of 1: 5 (hot water 1 mi urologist:Plant weight 5 g), which extracts from local plants are effective in testing bleach is pea flower, the flower spike, the London School of Economics Bougainvillea, pandan leaves, turmeric, respectively.Used to test the food from the market, it was found that the fish ball, kinorhyncha, bean sprouts and bamboo shoot, no bleach
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