摘要:
The present invention relates specifically to starch products and starch compositions useful for thickening aqueous liquids, for example, for use by people suffering from dysphagia. In one aspect, the invention provides a pregelatinized, hydroxypropylated starch, having a level of hydroxypropylation in the range of about 1 % to about 10%; an RVA viscosity in the range of about 400 cP to about 3500 cP; wherein the pregelatinized, hydroxypropylated starch is readily dispersible in milk. Another aspect provides a provides a pregelatinized, hydroxypropylated starch, having a level of hydroxypropylation in the range of about 1 % to about 10%; and an RVA viscosity in the range of about 400 cP to about 3500 cP; and less than about 80%> of the surface protein of the corresponding native starch.
摘要:
Erfindungsgemäß wird ein Hydrogel enthaltend chemisch modifizierte Polysaccharide und Proteine bereitgestellt. Es wird darüberhinaus ein Verfahren bereitgestellt, um aus Gemischen von Polysacchariden und Proteinen ein Hydrogel herzustellen. Erfindungsgemäß werden durch das Verfahren die Polysaccharide und Proteine chemisch kovalent modifiziert und intermolekular chemisch vernetzt. Der erfindungsgemäß hergestellte, chemisch derivatisierte Polysaccharid-Protein-Blend (abgekürzt „PPB") ist dadurch gekennzeichnet, dass er in wässrigem Medium ein Hydrogel ausbildet. Das erfindungsgemäße PPB-Hydrogel ist charakterisiert durch ein hohes Wasserbindungspotential und eine hohe Klebewirkung. Beispielsweise in der Bauchemie wirkt sich das erfindungsgemäße PPB-Hydrogel vorteilhaft auf das Klebe- und Abrutschverhalten von Fliesen aus.
摘要:
The present invention relates to hydroxyalkyl starch or a pharmaceutical preparation thereof for the treatment of cancer, tumor or tumor associated diseases, especially by effectively reducing tumor growth rate and inhibiting tumor growth and wherein the hydroxyalkyl starch has a mean molecular weight (MW) above 20 and below 1300 kDa and a molar substitution (MS) in the range of from 0.1 to 1.5, wherein the alkylation may be an ethylation, propylation or butylation or mixes thereof; and wherein the alkyl may be further substituted.
摘要:
The invention relates to a method for manufacturing a modified hydroxyethyl starch carrying a heptonic acid residue on at least one of its termini. According to the invention, the following steps are carried out: a) dissolving hydroxyethyl starch in water, b) adjusting the p H value to a value of 8.0 to 10.0, c) adding a cyanide compound to the hydroxyethyl starch solution, heating the solution to a temperature of 80 to 99 ° C and keeping it at this temperature for a first time period, and d) adjusting the p H value to a value of 2.0 to 4.0, bringing the solution to a temperature of 50 to 90 ° C and keeping it at this temperature for a second time period.
摘要:
The present invention relates to a method for preparing hydroxyalkyl starch. The method for preparing hydroxyalkyl starch comprises the steps of hydrolyzing starch, reducing the hydrolyzed starch, and substituting the reduced starch with hydroxyalkyl group in a dry process.
摘要:
The present invention relates to a process for preparing a chemically modified polysaccharide, preferably starch, by using a microdevice. It further relates to the use of a microdevice for the chemical reactions of polysaccharides in heterogeneous mixtures. Examples of chemical modifications are acetylation, oxidation, hydroxypropylation and the like.
摘要:
Silane-functionalized hydrophobic a(1→4)glucopyranose polymers and polymeric matrices are described. Biodegradable matrices can be formed from hydrophobic a(1→4)glucopyranose polymers with reactive pendent silyl ether groups. Reaction of the silyl ether groups provides improved matrix formation through bonding to a device surface of a device, polymer-polymer crosslinking, or both. Biodegradable matrices can be used for the preparation of implantable and injectable medical devices, including those that release a bioactive agent.
摘要:
The present invention concerns a process for preparing of slurries containing suspended and dissolved particles and a solution as well as a slurry are provided onto a hydrocyclone equipment, disk centrifuge or nozzle centrifuge equipment. The dry matter concentration in the collected slurry is higher than the concentration of the mixture of the slurry and the solution as such. The use of a hydrocyclone stage for this specific purpose is disclosed as well.
摘要:
The invention relates to a method for preparing a starch ether. The method comprises mixing cellulose with an ionic liquid solvent to dissolve the starch, and then treating the dissolved starch with an etherifying agent in the presence of a base to form a starch ether, and subsequently separating the starch ether from the solution, wherein both the dissolution and the etherification are carried out in the substantial absence of water.
摘要:
The present invention relates to a hair fixative composition comprising a canonically modified hydrolysed starch and especially canonically modified hydrolysed starches, hydrolysed to the extend of having a dextrose equivalent of 1 to 6.