摘要:
The invention relates to a novel process for the crystallization of xylitol by contacting a xylitol solution with particulate xylitol suspended in a gas, drying the material to produce a multitude of microrystals and conditioning the material into an agglomerated product. The invention also relates to a particulate crystalline xylitol product having novel properties, to the use thereof in confectionery, foodstuff pharmaceuticals and oral hygiene products, and to special products comprising the same.
摘要:
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.
摘要:
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.
摘要:
The invention relates to a process for the production of xylose from a paper-grade hardwood pulp comprising the steps of extracting xylan contained in said pulp into a liquid phase, subjecting the xylan contained in the obtained liquid phase to conditions sufficient to hydrolyze xylan to xylose, and recovering the xylose, wherein the extracting step includes at least one treatment of an aqueous suspension of said pulp or an alkali-soluble material thereof with a xylanase enzyme.
摘要:
The invention relates to a process for the hydrolysis of a hemicellulose substrate containing xylo-oligomers with an immobilized enzyme by adjusting the pH of an aqueous solution containing hemicellulose oligosaccharides and optionally ionic components to a value within a weakly acidic range, and contacting the solution with a hemicellulolytic enzyme or mixture of enzymes immobilized on a regenerable weak cation exchange carrier without fixing additives, and recovering xylose from the solution. The invention also concerns an enzyme preparation to be used in the process, comprising a weak cation exchange carrier and a hemicellulolytic enzyme or mixture of enzymes immobilized on said carrier.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
The present invention relates to a novel process for the crystallization of lactitol, to a particulate crystalline lactitol product having novel properties, to the use thereof as in foodstuffs, pharmaceuticals and oral hygiene products, as well as to special lactitol sweeteners. The process comprises: contacting a liquid containing dissolved lactitol with gas suspended fine solid particles containing microcrystalline lactitol; causing substantial removal of the solvent component of said liquid and allowing the resulting lactitol material to form an essentially solid composition of matter comprising a multitude of microcrystals of lactitol; and causing said lactitol composition to be conditioned during a further step to provide a product consisting essentially throughtout its entire structure of a multitude of microcrystals of lactitol agglomerated together in a random manner. The invention provides a crystalline lactitol product consisting essentially throughout its entire structure of a multitude of microcrystals of lactitol agglomerated together in a random manner.