Matthias Joehnck

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A fast isocratic HPLC method for analysis of steviol glycosides from Stevia rebaudiana leaves was developed with a high selectivity for nine known steviol glycosides and low eluent consumption. The analytical method was performed on a Purospher® STAR RP-18 endcapped 3 μm Hibar® RT 250-4.6 column at 50 °C with an eluent composition of water (65 vol. %) and(More)
An innovative chromatographic process idea for preparative purification of rebaudioside A from aqueous extracts of Stevia rebaudiana Bertoni leaves is developed. The process can handle high concentrated aqueous extracts, needs less equipment and has a lower solvent consumption compared to the state-of-the-art purification process of rebaudioside A. The(More)
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