A kinetic method of analysis based on the Sandell-Kolthoff catalytic reaction is used for the determination of the iodine content in cows' milk. Before being putting up for sale, cows' milk undergoes several industrial treatments: homogenization, pasteurization, ultra high temperature treatment and progressive skimming. The aim of this paper is to assess the effect of the official sanitary treatment and of various thermal precesses on milk iodine content. Special care is devoted to sampling in order to analyze samples deriving from the same initial pool. The analytical method is simple and sensitive. Recovery (92 ± 3%), repeatability (1.6%) and limit of detection(20 μg/l) are reported. A calibration curve in logarithmic form is proposed.
Iodine assay in cow milk: Industrial treatments and iodine concentration
PEDRIALI, Rodolfo;GIULIANI, Elena;MARGUTTI, Angelo;DEGLI UBERTI, Ettore
1997
Abstract
A kinetic method of analysis based on the Sandell-Kolthoff catalytic reaction is used for the determination of the iodine content in cows' milk. Before being putting up for sale, cows' milk undergoes several industrial treatments: homogenization, pasteurization, ultra high temperature treatment and progressive skimming. The aim of this paper is to assess the effect of the official sanitary treatment and of various thermal precesses on milk iodine content. Special care is devoted to sampling in order to analyze samples deriving from the same initial pool. The analytical method is simple and sensitive. Recovery (92 ± 3%), repeatability (1.6%) and limit of detection(20 μg/l) are reported. A calibration curve in logarithmic form is proposed.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
