René Borstel

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Articles

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Fast Online SPE Purification of Stevia Plant Extracts

René Borstel
September 6th 2012

Sample clean-up using solid-phase extraction (SPE) and similar methods can sometimes be both time-consuming and expensive. The purification of complex plant extracts requires special care in particular. A robust and sensitive online SPE sample preparation method is described for the determination of steviol glycosides.

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Determination and Quantification of Primary Aromatic Amine in Printer Ink

René Borstel;Mareike Margraf;Silvia Marten
September 1st 2012

Knauer Application Note

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Steviol Glycosides: Fast On-line SPE for Sample Cleaning of Plant Extracts

Udo Kienle;René Borstel
October 2nd 2011

KNAUER Application Note

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