Enzymatic determination of choline in milk using a FIA system with potentiometric detection
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چکیده
منابع مشابه
Enzymatic determination of choline in milk using a FIA system with potentiometric detection.
The development of a FIA system for the determination of total choline content in several types of milk is described. The samples were submitted to hydrochloric acid digestion before injection into the system and passed through an enzymatic reactor containing choline oxidase immobilised on glass beads. This enzymatic reaction releases hydrogen peroxide which then reacts with a solution of iodid...
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A collaborative study was conducted on a coupled enzymatic-spectrophotometric method for the determination of choline in infant formula and milk powders. Twenty-nine laboratories participated in the analysis of 8 blind duplicates over the range of 45-175 micrograms/100 g sample. After the combined acid hydrolysis-phospholipase release of choline, incubation with choline oxidase in the presence ...
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On the basis of its electrochemical behaviour a new flow-injection analysis (FIA) method with amperometric detection has been developed for quantification of the herbicide bentazone (BTZ) in estuarine waters. Standard solutions and samples (200 microL) were injected into a water carrier stream and both pH and ionic strength were automatically adjusted inside the manifold. Optimization of critic...
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ژورنال
عنوان ژورنال: The Analyst
سال: 2000
ISSN: 0003-2654,1364-5528
DOI: 10.1039/a910182i