Xyrofin Oy

Danisco Sugar Oy

Dupont Nutrition Biosciences Aps

Schott Solar Ag

Danisco Sweeteners Oy

Danico Sweetners Oy

Matti Tylli

Heikki Heikkilä

Vili Ravanko

Mirja Lindroos

Hannu Koivikko

Heikki O Heikkila

Juha Veikko Nurmi

Juho Jumppanen

Heikki Ojamo

Raimo Alen

Timo V&auml;kev&auml;inen

Tapio Juhani Antila

Christina Lindqvist

Heikki Heikkil&auml;

Olli-Pekka Eroma

Marja-Leena Sarkki

Johanna Nygren

Outi Puuppo

Jyrki Kuusisto

Pertti Walliander

Hannele Nikander

Andrei Miasnikov

Piia Haimi

Paivi Ojala

Siru Kauko

P&auml;ivi Sarmala

Nina M&auml;yr&auml;

Teppo Riihimäki

Martin Golde

Heikki HeikkilÄ

The invention relates to an improved process for the production of a sugar alcohol from the corresponding sugar through catalytic hydrogenation. Especially, the invention relates to a process for reducing the interference of sugar-derived aldonic acids in the hydrogenation process by adjusting the hydrogenation conditions so that the activity of the catalyst is maintained. In one embodiment of the invention, the process of the invention is carried out by adjusting the hydrogenation temperature by starting the hydrogenation at a lower temperature and then gradually rising the temperature to the final hydrogenation temperature. In another embodiment of the invention, the process of the invention is carried out by adding small-molecular monocarboxylic acids to the hydrogenation solution.

Hydrogenation process for the production of a sugar alcohol

The present invention relates to a process for the production of xylitol. The process utilises ribulose for the preparation of xylitol and involves several different conversion reactions, such as reduction, epimerisation and/or isomerisation. The present invention also relates to the use of ribulose for the preparation of xylitol.

Process for the production of xylitol

The present invention relates to the production of xylitol. In particular, processes utilising L-xylose as an intermediate for xylitol production are described. The present invention also relates to process for the preparation or L-xylose, as an intermediate, by-product or end-product to be used per se.

The invention relates to a method of simultaneous purification and separation of pectin and pectic sugars/oligomers from sugar beet pulp using a multi-step process in an aqueous solution. The method comprises hydrolysis of the sugar beet pulp, solids separation from the sugar beet pulp hydrolysate as well as fractionation and desalting of the aqueous solution of the sugar beet pulp hydrolysate thus obtained into a desalted solution enriched in pectin and a desalted solution enriched in pectic sugars/oligomers. The process may also comprise optional further steps, such as clarification, adsorption, concentration and further chromatographic treatment.

Process for the fractionation of sugar beet pulp

The invention relates to chromatographic fractionation of pectin-containing vegetable material, such as sugar beet pulp. In the method of the invention, a pectin-containing hydrolysate is chromatographically separated into a pectin fraction, a salt fraction and a sugar fraction. The method is carried out by using a cation exchange resin, which is preferably in the form of a multivalent metal.

Chromatographic fractionation of vegetable material

The invention relates to a method of producing xylitol and erythritol from arabinoxylan-containing material. According to the invention, the arabinoxylan-containing material is hydrolyzed and xylose and arabinose are separated from the obtained hydrolysate, whereafter the xylose is reduced to xylitol, and the xylitol is recovered, and the arabinose is subjected to alkaline oxidation to obtain erythronic acid which is reduced to erythritol, and the erythritol is recovered.

Method of producing polyols from arabinoxylan-containing material

The present invention relates to a process for the simultaneous production of converted and non-converted sugar and/or non-sugar products. The process is especially adapted to the simultaneous production of isomaltulose and/or trehalulose, and betaine or invert sugar from plant derived juices. Sucrose in said juices are enzymatically converted into isomaltulose and trehalulose and the target products are separately recovered from the resulting solution. The isomaltulose may be further converted into isomalt.

Process for the production of isomatulose and other products

The invention relates to a method for producing xylitol from a material containing xylose and xylonic acid. According to the method, xylose and xylonic acid are separated from the material containing xylose and xylonic acid, whereafter the separated xylose and xylonic acid are reduced to xylitol, and the xylitol is recovered.

Method for producing xylitol

Growing community of inventors

Kantvik, Finland

Matti Tylli