特殊營養食品及營養補充食品中營養素含量標示符合性評估   全文下載

Conformity Evaluation on the Labeling of Vitamins in Foods

本研究以經驗證之檢驗方法，分別就市售9件產品（特殊營養食品5件及營養補充食品4件）中之6項維生素共18件項營養素含量標示符合性評估。檢體經萃取後之檢液以高效液相層析儀串聯光二極體陣列檢出器進行維生素C之分析；另經不同前處理之檢液，分別以液相層析串聯質譜儀分析其餘5項營養素。分析結果如下：5件維生素C之檢測值與標示值之百分比值介於85-190%；2件游離態L-肉鹼之檢測值與標示值百分比值為111%及146%；2件游離態泛酸之檢測值與標示值之百分比值為136%及142%；3件游離態葉酸之檢測值與標示值之百分比值介於94-175%之間；3件維生素D3之檢測值與標示值之百分比值介於98-189%之間；3件維生素K1之檢測值與標示值之百分比值介於105-148%之間。整體來說，實驗結果顯示除1件項之維生素D3含量超出標示值180%，其餘17件項之檢驗結果皆與法規相符。

A conformity evaluation was performed in 9 commercial products considered the vitamin contents claimed on labels. All analysis was conducted with verified methods. The analysis of vitamin C was performed by HPLC connected with photodiode array detector. The analysis of the other 5 vitamins were performed by triple-quadrupole mass spectrometry. The results of the ratios of detected to labeled values were shown as follows: vitamin C, 85 - 190% in five samples; vitamin D3, 98 - 189% in three samples; vitamin K1, 105 - 148% in three samples; free form of carnitine, 111% and 146% in two samples; free form of pantothenic acid, 136% and 142% in two samples; free form of folic acid, 94 - 175% in 3 samples. There was only one sample that the detected/labeled ratio of vitamin D3 exceeded 180%, the other 9 samples (seventeen assays) were complied with the regulations.