Dupont Nutrition Biosciences Aps

Danisco Sweeteners Oy

Danisco Sweetners Oy

Pia Saari

Nina Nurmi

Hannu A Paananen

Heikki Heikkilä

Jari Lewandowski

Vili Ravanko

Juho Jumppanen

Katja Häkkä

Heikki O Heikkila

Jarmo Kuisma

Juha Veikko Nurmi

Mirja Lindroos

Päivi Sarmala

Kati Kekäläinen

Heikki HeikkilÄ

The present invention relates to a process for the production of xylose and dissolving pulp from xylan-containing biomass, such as hardwood. The invention is based on prehydrolysis of the xylan-containing biomass with SOin specified conditions, followed by chromatographic fractionation, nanofiltration or precipitation crystallization of the xylose-containing prehydrolyzate to obtain a xylose product having a xylose content of at least 55% on DS. The dissolving pulp obtained from the process can be used for example for the production of viscose.

Process of producing xylose and dissolving pulp

The present invention relates to a method of separating betaine and at least one other component from a sugar beet based fermentation solution. The invention is based on the use of a combination of SAC resins and WAC resins in a specific order and in specified proportions in a chromatographic SMB separation system. The chromatographic separation system is preferably a single integrated SMB system comprising both SAC and WAC resin beds.

Separation process

The invention relates to a method for separating betaine from fermentation process solutions, vinasse and other sugar beet based solutions on a weakly acid cation exchange resin in H-form in the chromatographic separation process. The present invention relates also to use of a weakly acid cation exchange resin in H-form for the chromatographic separation of betaine.

Method for separating betaine

The invention relates to a process of recovering galactose from a solution derived from plant-based biomass. In the process of the invention, the starting solution is subjected to one or more chromatographic fractionation steps, which may carried out with a strongly basic anion exchange resin and optionally with a strongly acid cation exchange resin, in any desired sequence, followed by recovering at least one fraction enriched in galactose. The galactose fraction thus obtained is further purified by crystallization to obtain crystalline galactose. The invention also relates to non-animal derived crystalline D-galactose.

Separation method

The invention relates to the recovery of deoxy sugars, such as fucose from biomass-derived solutions, such as spent liquors obtained from pulping processes. The invention is based on the use of chromatographic fractionation with specific column packing materials and combinations thereof. The deoxy sugar product obtained from the chromatographic fractionation may be further purified by crystallization. The invention also provides a novel crystalline fucose product and a novel process for the crystallization of fucose.

Separation of sugars

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Espoo, Finland

Pia Saari