Abstract:
Disclosed herein are compositions that comprise at least one oxidized polysaccharide derivative. Such an oxidized polysaccharide derivative can be produced by contacting a polysaccharide derivative under aqueous conditions with at least one agent that is capable of oxidizing the polysaccharide derivative. The polysaccharide derivative for oxidation has a degree of substitution (DoS) up to about 3.0 with at least one organic group. Further disclosed are methods of producing oxidized polysaccharide derivatives, as well as their use in various applications and products.
Abstract:
The present invention relates to a modified polysaccharide obtainable by a process comprising the step of treating a polysaccharide with gaseous or liquid SO 2 , a laundry detergent composition comprising said modified polysaccharide, the use of said modified polysaccharide to increase whiteness of a washed fabric, the use of said modified polysaccharide as anti-greying agent in aqueous laundry processes, the use of said modified polysaccharide as a rheology modifier for homecare applications and the use of said modified polysaccharide in the manufacture of a liquid laundry composition. Further aspects of the invention are a method for preparing a laundry detergent composition comprising said modified polysaccharide.
Abstract:
The invention relates to a method for the manufacture of carbonyl derivatives of polysaccharides and to the oxidization of polysaccharides in the presence of nitrogen dioxide to yield carbonyl derivatives of polysaccharides. The invention relates also to products comprising carbonyl derivatives of polysaccharides, obtainable by said method.
Abstract:
A method for making polysaccharide dialdehydes is disclosed, which uses a combination of precipitation and separation steps to purify the polysaccharide dialdehyde formed by oxidation of a polysaccharide with periodate. The method is simple, rapid, and provides a polysaccharide dialdehyde having very low levels of iodine-containing species and a low ash content. The polysaccharide dialdehyde is particularly suitable for preparing hydrogel adhesives for medical applications.
Abstract:
The invention relates to a process for treating grains and starch-based products during processing in the industrial starch separation and extraction industry, wherein the process is capable of producing predominantly pharmaceutical grade starch, and is characterised in that the starch-based products are brought into contact with an electrochemically activated aqueous anolyte solution with a pH in the range of from 2.5 to 7.5, an oxidation- reduced potential (ORP) in the range from +650 mV to >= +900 mV and a free active oxidant concentration of
Abstract:
A starch thinning and etherif ication process is provided comprising the steps of (a) mixing a starch substrate with a thinning agent, an alkalizing agent and an etherif ication agent; (b) drying the mixture of step (a); and (c) allowing the dried mixture to react with the etherif ication agent, wherein: the thinning agent consists of one or more hypochlorites; step (a) is carried out at an alkaline pH and does not involve any artificial heating; and step (b) is carried out before the mixture of step (a) reaches the starch substrate's gelatinisation temperature.
Abstract:
Process for treating a dietary meal containing starch, so as to make the latter poorly digestible, comprising the steps of: feeding a continuous flow of a starch-containing meal into a turbo- reactor (A) comprising a horizontal-axis cylindrical tubular body (1), provided with at least one inlet opening (5, 6), at least one discharge opening (7) for the treated product, a heating jacket (4), a bladed rotor (8) put into rotation at peripheral speeds comprised between 15 and 40 m/s, feeding into the turbo-reactor (A), cocurrently with the starch flow, a continuous and finely divided flow of a reactant consisting of a concentrated aqueous hydrogen peroxide solution, centrifuging the meal particles and the reactant against the turbo- reactor inner wall heated at a temperature of at least 100°C, with formation of a thin, dynamic, highly turbulent tubular fluid layer, reacting the meal and the reactant into the thin layer while it progresses in substantial contact with said inner wall of the turbo-reactor (A) towards the discharge opening (7), continuously discharging a flow of treated meal, having a humidity content of 30-50%, sending the flow of treated meal on to a maturation step for a time varying between 30 minutes and 24 h, at a temperature of 60-90°C, and to a subsequent drying step to bring the humidity content of the end meal to 10-16%.
Abstract:
The invention relates to a method for the modification of starch in such a way that it is suitable for surface sizing at high dry matter contents of > 15%, typically > 20%, even more than 25%. The modification of starch comprises at least degradation and stabilisation of the starch, whereby the degradation of starch is carried out by means of a chemical treatment, such as hypochlorite oxidation or acid treatment, to such a degree of degradation at which the viscosity of the surface size prepared from the starch, calculated to a dry matter content of 10% and to a temperature of 60°C, still is at > 10 mPas, typically > 20 mPas, most typically > 25 mPas, Brookfield RVTD II 100 rpm. The invention also relates to a starch intended for use in surface sizing at a high dry matter content and its use in surface sizing.
Abstract:
The invention relates to a process for washing and dewatering starch suspensions in a single step using a vacuum filter. It also relates to a rotary vacuum drum filter having means for feeding a suspension, sprayers for applying washing liquids and a scraper.
Abstract:
A process for producing aldehydes, and/or carboxylic acids is described, in which a primary alcohol, especially a carbohydrate, is oxidised using a catalytic amount of a nitrosonium compound obtained by oxidising a nitroxyl compound in the presence of an enzyme compound capable of oxidation. Further described are oxidised carbohydrates containing at least 1 cyclic monosaccharide chain group carrying a carbaldehyde group per 25 monosaccharide units and per molecule.