Dionex is proud to announce a new high-performance anion-exchange chromatography with pulsed amperometric detection (HPAE-PAD)-based method for the determination of hydroxymethylfurfural (HMF) in samples ranging from food (honey and pancake syrup) to treated biomass (corn stover and wood hydrolysate). Application Note 270: Determination of Hydroxymethylfurfural in Honey and Biomass demonstrates that this method has a broad linear range, high precisions, and low detection limits. This system configuration requires only addition of deionized water for continuous operation.

HMF is naturally found in many foods (e.g., honey) and can increase during cooking or processing. The concentration of HMF can indicate food quality and authenticity, and some countries have proposed limits to its content in food. In addition, HMF formed during the treatment of biomass (e.g., corn stover) to produce biofuels can inhibit fermentation, reducing yields. It is also used as a starting material to produce other chemicals currently derived from crude oil.

This application note describes the use of a Dionex ICS-3000 system with a CarboPac® PA1 column, electrolytically generated hydroxide eluent, and electrochemical detection with a disposable Au-on-polytetrafluoroethylene (PTFE) working electrode. The CarboPac PA1 is a high-capacity, rugged column suitable for determining mono and disaccharides, and has high resolution for HMF in a wide variety of matrices. The disposable Au working electrode provides consistently high detector response, assuring greater instrument-to-instrument and lab-to-lab reproducibility. The HPAE-PAD-based HMF analysis method described in AN 270 is accurate, reliable, and applicable to on-line monitoring of HMF levels in food and biomass applications.

This application note and many others can be found at www.dionex.com under the Documents tab.

Dionex (NASDAQ:DNEX) is a global leader in the manufacturing and marketing of liquid chromatography and sample preparation systems, consumables, and software for chemical analysis. The company's systems are used worldwide in environmental analysis and by the life sciences, chemical, petrochemical, food and beverage, power generation, and electronics industries. Our expertise in applications and instrumentation helps analytical scientists to evaluate and develop pharmaceuticals, establish environmental regulations, and produce better industrial products.

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