A new method for quantifying iodine in a starch-iodine matrix

作者：Manion Bruce A; Holbein Bruce E; Marcone Massimo F; Seetharaman Koushik^*

来源：Carbohydrate Research, 2010, 345(18): 2698-2704.

DOI：10.1016/j.carres.2010.09.025

• Starch
• Iodine
• Ethyl iodide
• Gas chromatography
• Starch-iodine complex
• Quantification

A rapid and sensitive method for quantifying iodine in intact starch granules using gas chromatography is described with detection limits as low as 0 2% (w/w) iodine in starch Sample preparation includes NaBH(4) reduction of the various iodine species associated with starch to the colorless soluble iodide ion followed by its quantitative derivatization to EtI using Et(3)O(+)BF(4)(-) in CH(2)Cl(2) Identification and quantification of EtI is carried out by extraction and injection of the EN so generated in CH2Cl2 into a gas chromatography-mass spectrometer (GC-MS) Routine quantification of EtI was then performed using GC with a flame ionization detector (GC-FID) Results for different iodine potassium iodide ratios of t

• 出版日期2010-12-10