Suddeutsche Zucker-aktiengesellschaft

Sudzucker Aktiengesellschaft Mannheim/ochsenfurt

Sudzucker Aktiengesellschaft

Suedzucker Ag

Suedeutsche Zucker-aktiengesellschaft

Hubert Schiweck

Mohammad Munir

Markwart Kunz

Ralf Mattes

Lutz Muller

Wolfgang Gau

Kathrin Klein

Georg Steinle

Knut M Rapp

Frieder W Lichtenthaler

Mohammed Munir

Michael Gander

Theodor Cronewitz

Gu/ Nter Witte

Manfred Vogel

Dierk Martin

Thomas Weber

Fritz Wurm

Hans-Werner Weinz

The invention relates to sucrose isomerases, to DNA sequences coding therefor, and to novel processes for the production of non-cariogenic sugars.

Preparation of acariogenic sugar substitutes

DNA's encoding sucrose isomerase and palatinase

5-(.alpha.-D-glucopyranosyloxymethyl)-furan-2-carboxaldehyde (GMF) is produced from isomaltulose by heating a solution of isomaltulose in a strongly polar aprotic solvent in the presence of an acidic ion-exchanger, either batchwise or by percolation of the solution through a column filled with the ion-exchanger. Novel derivatives of GMF of the formula (I) ##STR1## wherein R' is a hydrogen atom, an acyl group or an alkyl group and X represents --CH.sub.2 OH, --COOH, --C(H).dbd.NOH, --CN, --CH.sub.2 NHR' or --CH.dbd.CR'R'', where R' is a hydrogen atom, an acyl or aryl group or an alkyl group with up to 20 C atoms and R'' is a hydrogen atom, --NO.sub.2, --CN, --COOalkyl or acyl are described, and also their preparation and use for the preparation of surface-active compounds.

5-(.alpha.-D-glucopyranosyloxymethyl)-furan-2-carboxaldehyde

Process of preparing 1,6-.beta.-D-anhydroglucopyranose (levoglucosan) in high purity is described, where the starting material with a water-content, adjusted to max. 20%, is pyrolyzed, the volatile components are condensed and this distillate is neutralized. After filtration and optional treatment with an adsorbent, the mixture is chromatographically separated over an ion-exchange resin with water as eluent. Levoglucosan containing fractions are concentrated and crystalline levoglucosan is obtained by an evaporation - and/or cooling crystallization from a supersaturated water solution.

Process for preparing 1,6-.beta.-D-anhydroglucopyranose (levoglucosan)

The invention concerns a process for production of L-arabionose in crystalline form. Starting material are extracted sugar beet pulp or other L-araban containing plant materials. These are heated in an autoclave as an aqueous suspension in the presence of Ca(OH).sub.2. The so obtained solution is chromatographed on a cationic exchanger in the Ca-form. The araban containing fraction is hydrolyzed after adding H.sub.2 SO.sub.4, neutralized and rechromatographed on a cationic exchanger in Ca-form. After concentrating the arabinose containing fractions L-arabinose is obtained in form of crystals by cooling crystallization.

Process for production of crystalline L-arabinose

Lime-treated juice in a sugar plant is carbonated in a first stage and a second stage with a carbon dioxide-containing gas to remove lime and impurities therefrom. Exhaust gas from the second stage is recycled to the first stage. Heat can be recovered from exhaust gas from the first stage and from the second stage.

Method for improving the carbonation procedure in a sugar plant

Process for obtaining beet pulp of high dry-solids content from a sugar extraction process by mechanically pressing the pulp, mixing salts of polyvalent cations, an acid or both with the pressed pulp, further pressing the admixture and thermally drying the admixture. The salts of the polyvalent cations are preferably calcium chloride, aluminum chloride and ferric chloride and are added in an amount of from 0.5 to 10%, preferably from 1.5 to 4%, relative to the pulp dry-solids content. The liquid from the second pressing can be concentrated by evaporation and at least part can be recycled to produce the initial solution of the salts. The remainder of the concentrated liquid can be added to the pressed admixture before or after drying to further increase the dry-solids content.

Process for obtaining pressed beet pulp with high dry-substance content

A process for extracting xylitol from the end syrups of the xylitol crystallization by subjecting the end syrup to chromatographic separation, whereby it will be decomposed into two or more fractions, the first fraction containing mainly the polysaccharides and polysaccharide alcohols and the subsequent fractions containing essentially the pentitols and hexitols.

Process for recovering xylitol from end syrups of the xylitol

Glucopyranosido-1,6-mannitol, represented by the formula: ##STR1## and a process for its preparation are provided. The glucopyranosido-1,6-mannitol is obtained by catalytically hydrogenating neutral aqueous solutions of isomaltulose and cooling the hydrogenated solution. In a second embodiment of the invention the use of the glucopyranosido-1,6-mannitol as a sugar substitute, sweetener for food or beverages, and sweetened food composition is provided.

Glucopyranosido-1,6-mannitol, a process for producing the same and its

Use of glucopyranosido-1,6-mannitol as a sugar substitute

Process for separating sugars from molasses by liquid distribution chromatography according to which molasses are contacted in a special manner with cation exchangers, distributed between at least two columns in the calcium form and by eluting also in a special manner the loaded cation exchangers with decarbonized water.

Process for working up molasses

Isomaltitol has also been discovered to be valuable as a therapeutic agent for chronic obstipation and liver injury, in particular for the treatment and prophylaxis of hepatopathy, dyspepsia, dysbiosis and disturbances in the nourishment of infants, and their consequent phenomena.

Growing community of inventors

Worms, Germany

Hubert Schiweck