Cultor Oy

Xyrofin Oy

Tapio Viljava

Hannu A Paananen

Mirja Lindroos

Heikki O Heikkila

Juha Veikko Nurmi

Heikki Heikkilä

Hannu Koivikko

Marja-Leena Sarkki

Göran Hyöky

Leena Rahkila

Pertti Walliander

Marja Leena Sarkki

The invention relates to a process for the simultaneous production of xylitol and ethanol from a hydrolyzed lignocellulose-containing material starting. The starting material is fermented with a yeast strain, the ethanol produced is recovered, a chromatographic separation is carried out on the remaining xylitol solution, and pure xylitol is crystallized.

Process for the simultaneous production of xylitol and ethanol

Process for fractioning vinasse

Isomaltulose-forming microorganisms are immobilized on a carrier that is a weakly basic anion exchange substance in the form of a substantially non-compressible porous particulate solid material, and are used for isomerization of sucrose to isomaltulose. A preferred carrier contains microfibers or microparticles of diethylaminoethyl cellulose adherently bound by agglomeration with polystyrene. The isomerization may be a continuous conversion in one or more columns packed with the carrier. Isomaltulose may be hydrogenated to form isomalt for use in sweetening. Microorganisms can be immobilized on the carrier by feeding microorganisms to a column containing the carrier. After microorganism immobilization, the carrier may be treated with a crosslinking and/or flocculating compound. Regeneration of the carrier is carried out by removing microorganisms, washing and reloading with fresh microorganisms.

Immobilization of microogranisms on weakly basic anion exchange

Method for preparing pure lactic acid

Process for clarifying vinasse

Growing community of inventors

Kantvik, Finland

Tapio Viljava