Xyrofin Oy

Danisco Sweeteners Oy

Danisco Finland Oy

Dupont Nutrition Biosciences Aps

Suomen Sokeri Oy

Suomen Xyrofin Oy

Cultor Corporation

Finnfeeds Finland Oy

Valio Meijerien Keskusosuusliike

Heikki O Heikkila

Marja-Leena Sarkki

Juha Veikko Nurmi

Jarmo Kuisma

Hannu A Paananen

Mirja Lindroos

Olli-Pekka Eroma

Goran Hyoky

Jari Lewandowski

Vili Ravanko

Johanna Nygren

Hannu Koivikko

Tammy Pepper

Heikki Ojamo

Kaj-Erik Monten

Outi Puuppo

Leena Rahkila

Matti Tylli

Päivi Sarmala

Göran Hyöky

Tapio Timo Viljava

Hakan Gros

Hannele Nikander

Ian Fairs

Per Bo Sorensen

Nina Mayra

Elina Sjoman

Merja Elisa Penttila

Marja Ilmen

Juho Jumppanen

Matti E Harju

G&ouml;ran Hy&ouml;ky

Tapio Viljava

Pia Saari

Jaana Uusitalo

Marianne Nyström

Annikka Mustranta

Kaisa Poutanen

Jari Mattila

Tiina Tervala

Jutta Lindell

Vesa Kurula

Marja Toyryla

Maija-Leena Vehkomaki

Paivi Ojala

Jussi Valkonen

Ilkka Pitkanen

Paula Perkkalainen

Craig Myers

Mika Manttäri

Ari Karki

A process for the separation of a xylose-containing, lignosulphonate-containing Ca-sulfite spent liquor is provided. The process comprises a first step of: (A) chromatographic separation of the Ca- or Mg-sulfite spent liquor using a single pass through a batch-type long resin bed chromatography column having a strong acid cation exchange resin as a separation medium. The ratio of the bed length:mean resin bead diameter of the column is 10,000-40,000. This step yields &#x2022;a first xylose-rich fraction having a xylose content 50-70 wt. % based on dry solids and &#x2022; a lignosulphonate-rich fraction. The process further comprises a step of: (B) crystallizing xylose from the first xylose rich fraction by using a crystallization method comprising (i) boiling crystallization; (ii) cooling crystallization or (iii) a combination of (i) and (ii) to obtain a first batch of crystalline xylose and a first xylose run-off. The process provides a simplification of existing methods, and at the same time allows advantages such as improved xylose yield and improved xylose purity.

Process for separation of Ca- or Mg-sulfite spent liquor to yield crystalline xylose

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 invention relates to an improved nanofiltration process for separating and recovering components, such as sugars and sugar alcohols from multicomponent mixtures. The process of the invention is characterized by collecting the nanofiltration retentate/permeate in several fractions with different purity, optional recycling of at least one of the collected nanofiltration retentate/permeate fractions to the nanofiltration and recovering the desired component from the nanofiltration permeate/retentate fractions by different methods. In one embodiment of the invention, the process comprises a combination of nanofiltration and chromatography.

Separation process

The present invention relates to microcrystallized polyol comprising at least two polyols, wherein said polyols are selected from the group consisting of maltitol, xylitol and lactitol and wherein said composition contains at least 35% by weight of each of at least two of said polyols microcrystallized together into a solid microcrystalline product. The present invention also relates to a process for the microcrystallization of polyols into a polyol composition. The microcrystallized polyol composition can be used in confectionery, foodstuffs, oral hygiene products and pharmaceuticals and in dietetic products.

Crystallization of polyol compositions, crystalline polyol composition product and use thereof

The present invention relates to a microcrystallized polyol comprising at least two polyols, wherein said polyols are selected from the group consisting of maltitol, xylitol and lactitol and wherein said composition contains at least 25% by weight of each of at least two of said polyols microcrystallized together into a solid microcrystalline product. The present invention also relates to a process for the microcrystallization of polyols into a polyol composition. The microcrystallized polyol composition can be used in confectionery, foodstuffs, oral hygiene products and pharmaceuticals and in dietetic products.

Effective processes are provided for the production of xylitol and ethanol and other products from solutions derived from lignocellulose-containing material in biomass. The solutions can be hydrolyzed or partially hydrolyzed before being fermented with microbes. The fermented solution can be distilled and can be subsequently separated, such as, by chromatographic separation, membrane separation, etc. The recovered xylitol solution can be crystallized to provide pure xylitol crystals.

Process for the simultaneous production of xylitol and ethanol

The invention relates to a method for the production of xylitol, the method comprising The invention also relates to a microorganism, which has xylanolytic activity and has been genetically modified (i) to enhance its xylanolytic activity, and (ii) to reduce its xylitol metabolism.

Method for the production of xylitol

The invention relates to a separation process of fractionating a solution comprising betaine and sucrose by subjecting said solution to chromatographic fractionation and nanofiltration and recovering a fraction enriched in betaine and optionally a fraction enriched in sucrose. The solution to be fractionated in accordance with the present invention is typically a sugar beet-derived solution, for instance a molasses solution.

Process for recovering betaine

The invention relates to a process of separating compounds with a small molar mass from compounds having a molar mass less than 1.9 times that of the compounds with a small molar mass using nanofiltration. The compounds with a small molar mass have a typical molar mass less than 250 g/mol. In one embodiment of the invention, pentose sugars are separated from hexose sugars. The invention can be applied to the recovery of xylose from spent liquors and to the recovery of betaine from sugar beet pulp extracts, for example.

The present invention is directed to a method comprising a multistep process for recovering one or more monosaccharides from a solution containing at least two monosaccharides selected from the group consisting of rhamnose, arabinose, xylose and mixtures thereof by using chromatographic separation comprising at least one step, where a weak acid cation exchange resin is used for the chromatographic separation.

Method for recovering products

The invention relates to novel anhydrous (&#x3b2;) lactitol crystals, belonging to the orthorhombic P222cystal system and having unit cell constants a=9.6 &#x212b;, b=11.1 &#x212b;, c=14.0 &#x212b;. The invention also relates to crystalline lactitol products containing the novel anhydrous &#x3b2; lactitol and to a process for the preparation thereof by crystallizing from an aqueous solution of lactitol. The novel anhydrous &#x3b2; lactitol is stable and nonhygroskopic and it may be used as a substitute for sugar in foodstuffs and sweets, in as well as in pharmaceutical and hygienic products.

Anhydrous lactitol crystals, a product containing the same and a process for the preparation thereof as well as use thereof

The invention relates to a method comprising a multistep process for recovering betaine, erythritol, inositol, sucrose, mannitol, glycerol and amino acids from corresponding starting materials. The invention comprises the use of a weakly acid cation exchange resin in chromatographic column in the multistep process. The starting materials are especially beet molasses, betaine molasses, syrups, thick juices, raw juices, corn steep cane based solutions and glycerol.

Method for recovering products from process solutions

The invention relates to a method for the fractionation of molasses using a chromatographic simulated moving bed system with two or more loops in which the liquid flow can be effected in a system comprising at least two chromatographic partial packing material beds. In the method of the invention, product(s) are recovered during a process comprising one or more of the following phases: a feeding phase of molasses, an eluting phase and a recycling phase. The liquid present in the partial packing material beds with their dry solids profile can be recycled in the recycling phase in one or more loops comprising one or more partial packing material beds.

Method for the fractionation of molasses

The invention relates to a method for the fractionation of molasses using a chromatographic simulated moving bed system in which the liquid flow is effected in a single direction in a system comprising at least two chromatographic partial packing material beds. In the method of the invention, the product or products are recovered during a multi-step sequence comprising the following phases: feeding phase of molasses, eluting phase and recycling phase. The liquid present in the partial packing material beds with their dry solids profile is recycled in the recycling phase in a loop comprising one, two or several partial packing material, beds.

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Espoo, Finland

Heikki O Heikkila