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Comparative evaluation of extraction procedures and method validation for determination of carbohydrates in cereals and dairy products by capillary electrophoresis

✍ Scribed by Alessandra V. Jager; Fernando G. Tonin; Marina F. M. Tavares

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
652 KB
Volume
30
Category
Article
ISSN
1615-9306

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✦ Synopsis

Abstract

This work describes the development and application of two optimized electrolytes: 15 mmol/L sorbate, 0.2 mmol/L CTAB, and 35 mmol/L sodium hydroxide for the determination of fructose, glucose, maltose, maltotriose, and sucrose in cereals and 15 mmol/L sorbate, 0.3 mmol/L CTAB, and 55 mmol/L sodium hydroxide for the determination of fructose, glucose, galactose, lactose, and sucrose in dairy products. Both methods were validated with respect to linearity, limits of detection (using both signal‐to‐noise ratio and the Eurachem approach), recovery tests, and intra‐ and inter‐day precision exhibiting adequate performance. Additionally, statistically similar results were obtained in a comparative study of extraction procedures for carbohydrates using the AOAC protocol, ultrasound extraction, magnetic stirring, and sample dissolution.

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