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Anions and Organic Acids in Apple Juice by High Pressure Capillary IC Be the first to rate this application

Description

Anions and Organic Acids in Apple Juice by High Pressure Capillary IC. Determinations of organic acids in beverages are important to the beverage industry because these acidulants and flavoring agents maintain beverage freshness, minimize microbiological growth, and add a characteristic flavor. Additionally, analysis is required to meet product labeling requirements in 21 CFR part 101.1 High Pressure Capillary Reagent-Free™ ion chromatography (RFIC™) is the latest advancement in ion chromatography instrumentation. Typically with an RFIC system, the system pressure is limited to <3000 psi because of the limitations of materials in the RFIC accessories. Now with the upgrade to high pressure, the ICS-5000 IC capillary system can operate at system pressures <5000 psi. This advance in technology allows 2x to 3x the µL/min flow rates with all the same advantages as standard pressure capillary IC, resulting in low consumption of water (30 to 40 mL/d of water) and low waste generation. In capillary IC, the system can remain on without loss in resources, i.e., capillary IC is always on and ready for analysis. These advantages result in: 1. Greater ease-of-use, 2. Longer eluent generator cartridge life, 3. Lower cost of ownership. Additionally, the increase in mass sensitivity, comparable results are achieved as with standard bore system using a sample injection of only 0.4 µL. In this study, inorganic anions and organic acids from a diluted apple juice sample are separated by anion-exchange chromatography on a capillary size Thermo Scientific Dionex IonSwift MAX-100 monolith IC column. The IonSwift MAX-100 column is designed with a monolith backbone and optimized with Dionex IonPac AS11 anion-exchange chemistry. This column was selected for these high pressure cap IC experiments because of the high efficiency and high flow rate characteristics.
Market: Food and Beverage
Matrix: Juice
Uploaded on 12/11/2011.

For Research Use Only. Not for use in diagnostic procedures.