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15th Anniversary Supplement

8 November 2012 | By Albert Zwijgers / Lilia Ahrné / Petra Wissenburg / Supriya Varma

This free to view 15th Anniversary Supplement is sponsored by

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Progress on coffee roasting: A process control tool for a consisten roast degree – roast after roast

4 July 2012 | By Chahan Yeretzian, Flurin Wieland & Alexia N. Gloess, Zurich University of Applied Science, Institute of Chemistry and Biological Chemistry and Marco Keller, Andreas Wetzel & Stefan Schenker, Bühler AG

A real-time automated process control tool for coffee roasting was developed to consistently and accurately achieve a targeted roast degree. It is based on timeresolved on-line monitoring of volatile organic compounds (VOC) in the off-gas of a drum roaster, using Proton-Transfer-Reaction Time-of-Flight Mass-Spectrometry (PTR-TOF-MS). These experiments provide a detailed, real-time…

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Pasteurisation: Oilseeds, nuts and almonds

22 February 2010 | By Jürgen Fischer, Member of the Executive Board, Bühler Barth AG

Agronomic foods are often naturally contaminated with harmless and pathogenic microorganisms. In most cases, agronomic goods are freshly processed, or appropriately processed to preserve and increase shelf stability. Common preservation techniques include heat pasteurisation or sterilisation, irradiation, disinfestations with gaseous substances etc. In particular, the two latter techniques are rarely…