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KMID : 0881720110260040322
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Journal of Food Hygiene and Safety
2011 Volume.26 No. 4 p.322 ~ p.329
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The Content of Minerals and Vitamins in Commercial Beverages and Liquid Teas
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Shin Young
Kim Sung-Dan
Kim Bog-Soon
Yun Eun-Sun
Chang Min-Su
Jung Sun-Ok
Lee Yong-Chul
Kim Jung-Hun
Chae Young-Zoo
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Abstract
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This study was done to analyze the contents of minerals and vitamins to compare the measured values of minerals, vitamins with labeled values of them in food labeling and to investigate the ratio of measured values to labeled values in 437 specimen with minerals and vitamins - fortified commercial beverages and liquid teas. Content of calcium and sodium in samples after microwave digestion was analyzed with an ICP-OES (Inductively Coupled Plasma Optical Emission Spectrometer) and vitamins were determined using by HPLC (High Performance Liquid Chromatography). The measured values of calcium were ranged 80.3~142.6% of the labeled values in 21 samples composed calcium - fortified commercial beverages and liquid teas. In case of sodium, measured values were investigated 33.9~48.5% of the labeled values in 21 sports beverages. The measured values of vitamin C, vitamin B2 and niacin were ranged 99.7~2003.6, 81.1~336.7, 90.7~393.2% of the labeled values in vitamins - fortified commercial beverages and liquid teas, 57, 12, 11 samples. To support achievement of the accurate nutrition label, there must be program and initiatives for better understanding and guidances on food labelling and nutrition for food manufacture.
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KEYWORD
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beverage, liquid tea, vitamin, mineral, ICP-OES, HPLC, microwave digestion
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