Siidzucker

Kunz, M. Schwarz, A. Kowalczyk, J. (Siidzucker AG), Process for continuous manufacture of di- and higher-oxidized carboxylic acids from carbohydrates, Ger. Offen. DE 19 542 287 (1996) Chem. Abstr., 1997, 127, 52504. 

Legislation is in place to support production of fuel ethanol in Canada and Brazil, and the EU has committed to ensuring that 5.75 percent of all transportation fuel in the EU will be bio-based by the year 2010 - a target that cannot be achieved by biodiesel alone. Several European companies, such as Abengoa and Siidzucker, have therefore announced aggressive plans for expansion in ethanol in the coming years. 

Fructose, or a fructose-containing polysaccharide, can be transformed into HMF by aqueous sulfuric acid at 150 °C via a number of isomerization and dehydration steps [185]. Presumably, such a procedure was at the basis of the pi-lot-scale production of HMF by Siidzucker (Germany) [186]. Major problems are the competing rehydration of HMF into levulinic acid (4-oxopentanoic acid, LA, see Fig. 8.35) and the formation of polymeric side-products, which necessitate chromatographic purification. Yields have stayed modest (approx. 60%), in consequence. 

Siidzucker AG Mannheim/Ochsenfurt, Central Department Research, Development, Technological Services (CRDS), Wormser Strasse 11, 67283 Obrigheim, Germany e-mail siegfried.peters suedzucker.de... 

Raney nickel catalyst to yield the tooth friendly sweetener Isomalt (Siidzucker), chemically an equimolar composition of 6-o-a-D-glucopyranosido-D-sorbitol (1,6-GPS) and 1 -o-a-D-glucopyranosido-D-mannitol-dihydrate (1,1 -GPM-dihydrate)... 

Method for selective carbohydrate oxidation using supported gold catalysts, J. Kowalczyk, A. H. Begh, U. Priisse, H. Bendt, and I. Pitsch, WO Patent 099114 A1 (2004), Siidzucker Akt. 

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