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Displaying 1-5 of 8 results for Tag: AOAC

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AN1155: Determination of Chloride in Infant Formula and Adult Nutritionals

Instrument Type: IC

This application note shows an ion chromatography (IC) determination of chloride in 19 SPIFAN (AOAC Stakeholder Panel on Infant Formula and Adult Nutritionals) matrices. The results show that the method fulfills the SPIFAN standard method performance requirements (SMPRs). Repeatability, recovery, linearity, limit of detection, and limit of quantification were determined according to the chloride AOAC SMPR4 and AOAC Single Lab Validation guidelines. An ICS-6000 can be used for this application.

AU193: Choline in Infant Formula and Adult Nutritionals, a Single Laboratory Validation

Instrument Type: IC

Choline is a water-soluble quaternary amine essential to methyl metabolism, transmembrane signaling, and normal brain development. This application update is an IC method that simultaneous determines choline and other cations. The method uses electrolytic generation of a methanesulfonic acid (MSA) eluent for a 2 mm Dionex IonPac CS19 column. This method has been reviewed by expert review panel (ERP) and approved as an AOAC Official First Action Method (AOAC Method 2012.20).

AN92: The Determination of Sugars in Molasses by High-Performance Anion Exchange with Pulsed Amperometric Detection

Instrument Type: IC

The accurate measurement of the amount of sugar in final molasses is economically important to sugar mills, because the purchase price of the final molasses is directly related to its sugar content. A high-performance anion exchange method with pulsed amperometric detection (HPAE-PAD) was developed to accurately determine the sugar concentrations of cane and beet final molasses samples.

AN248: Determination of Lactose in Lactose-Free Milk Products by High-Performance Anion-Exchange Chromatography with Pulsed Amperometric Detection

Instrument Type: IC

This work describes a sensitive and accurate method to extract, separate, and quantify lactose and lactulose in milk-based products. The method uses a Dionex CarboPac PA20 column with PAD to quantify lactose and lactulose in a separation time of less than 30 min. The use of disposable gold electrodes provides the benefit of high electrode-to-electrode reproducibility and rapid equilibration upon installation.

AN155: Determination of Trans-Galactooligosaccharides in Foods by AOAC Method 2001.02

Instrument Type: IC

In AOAC Method 2001.02, a buffered extract of the sample containing TGOS is treated with an enzyme, β-galactosidase, that hydrolyzes TGOS to galactose and glucose. Galactose and other sugars are separated on a CarboPacTM PA1 column and detected by pulsed amperometric detection (PAD).