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http://dx.doi.org/10.3746/jkfn.2004.33.1.222

Development of Titanium Dioxide Analytical Method on Commercial Foods in Korea  

김희연 (식품의약품안전청 식품첨가물평가부)
홍기형 (식품의약품안전청 식품첨가물평가부)
박성관 (식품의약품안전청 식품첨가물평가부)
박수미 (식품의약품안전청 식품첨가물평가부)
오세진 (식품의약품안전청 식품첨가물평가부)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.33, no.1, 2004 , pp. 222-224 More about this Journal
Abstract
This study was performed to analyze the contents of titanium dioxide in commercial foods by UV/VIS spectrophotometry. This method incorporated foods reducing to ashes, dissolution of the ash in sulfuric acid and color development using hydrogen peroxide. The UV/VIS spectrophotometric response was compared to a standard solution. The contents of titanium dioxide in commercial foods were 1.56∼7.74 g/kg in chocolate, 0.27∼1.74 g/kg in health food, 0.48∼2.96 g/kg in chewing gum and 0.34∼2.34 g/kg in candy, respectively. Recoveries of titanium dioxide in foods were 88.46∼104.75% accordingly.
Keywords
titanium dioxide; spectrophotometer; food additive;
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