| Summary: | 碩士 === 中華科技大學 === 健康科技研究所 === 103 === Compare Rankine method and DTNB (5.5'-dithiobis- (2-nitrobenzoic)) method. Results DTNB method is more convenient, so as afterwards experimental method. Candy samples purchased from the north and east of Taiwan, a total of 100 kinds. The northern region of 70 kinds, including 36 kinds of Taipei Eastern Area, 25 kinds of Taipei Middle Area, 9 kinds of Taipei Southern Area, 6 kinds of Keelung, 15 kinds Taoyuan Area,9 kinds of Eastern Area. The results of sample inspection of sulfite total 40, the detection rate of 40%, including 39 compliant batches the sulfite content (30 ppm or less). One sample which sulfite concentration of 44.9 ppm, its non-compliant rate of 1.0%. Test coloring agent of the candy sample was the wool dyeing method. There were 91 kinds of samples, total of 66 kinds of Taipei, including 32 kinds of Taipei Eastern Area, 25 kinds of Taipei Middle Area, 9 kinds of Taipei Southern Area, 2 kinds of Keelung, 15 kinds Taoyuan Area and 8 kinds of Eastern Area. Result the inspection of the 85 kinds of acid pigment, 6 kinds of basic pigment. Including 39 kinds of use bleaching agent and coloring agent, the detection rate was 42.9%. Use of green beans and onions soak sulfite growth experiments. Results, green bean and onion growth height, soaked in sulfite from 0 to 30 ppm growth height did not differ, but in more than 60 ppm, growth height decreased. Onion root tip cell number was observed, sulfite solution soak time longer, the impact of accelerated cell death.
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