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Determination of phosphoric acid and citric acid in soft drink products by Reagent-Free[TM] ion chromatography.(Food and Beverage)(Advertisement)
- Article from:
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LC-GC North America
- Article date:
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September 1, 2004
- Author:
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Copyright informationCOPYRIGHT 2004 Advanstar Communications, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Phosphoric acid is used as a stabilizer and preservative in cola drinks. It also influences taste, making cola drinks tart. The phosphoric acid concentration in cola drinks is monitored to maintain product quality and minimize production costs. Its concentration varies with the beverage formulation, but usually it is in the range of 500 mg/L [+ or -] 100 mg. The phosphoric acid concentration is measured during the manufacturing of the cola syrup and during the bottling of the cola drink. Citric acid is used for the same purpose, and both of these acids can be used in combination.
Dionex has developed a method that rapidly analyzes the phosphoric and citric acid ...