438 results about "Starch gelatinization" patented technology

The invention is directed to methods of producing ethanol and decreasing residual starch production in a no cook fermentation comprising contacting granular starch containing substrates with a granular starch hydrolyzing enzyme, a protease, and a fermenting microorganism under suitable fermentation conditions at a temperature below the starch gelatinization temperature of the starch substrate to produce ethanol, wherein the ethanol production is increased and the amount of residual starch is decreased compared to a substantially similar method conducted without the protease.

A filter material adapted for use as a filter element of a smoking article is provided, the filter material including at least one segment of fibrous tow having a plurality of degradable particles dispersed therein, the degradable particles comprising a starch material. Exemplary starch materials include naturally-occurring starch, hydroxyalkylated starch, starch esters, ionically modified starch, oxidized starch, hydrolyzed starch, plasticized starch, gelatinized starch, grafted starch, crosslinked starch, transglycosylated starch, starch ethers, and mixtures thereof, as well as blends of starch with other polymers. Filter elements and smoking articles, such as cigarettes, that contain the filter material are also provided. A method of preparing polymer fibers for use in filter elements is also provided, the method including adding the starch material to a fiber precursor solution prior to fiber extrusion or dry-blending the starch material with the polymer material to be formed into fibers.

The invention discloses a method for preparing starch microspheres, which comprises the following steps of: stirring 20 to 70 percent of plant starch emulsion at the constant temperature in the critical temperature of starch gelatinization for 10 to 30 minutes under the action of 2 to 15 percent of water-soluble thickening agent, standing, cooling naturally, removing supernate, washing, and drying to prepare the starch microspheres. The surfaces of the prepared starch microspheres are smooth, the inner part is hollow, one or more nano-scale micropores are distributed on the surface, the wall thickness is uniform, the grain diameter is between 10 and 100 micrometers, and the wall thickness is between 1 and 10 micrometers. The prepared starch microspheres have a simple preparation process and readily available materials, and are widely applied to fields of medicines, cosmetics, food modifiers, printing ink, papermaking and the like.

The invention relates to a process for preparing a starch grafting acrylamide paper reinforcing agent, which includes the following steps of adding an oxidant and sodium hydroxidein into a starch emulsion for an oxidizing reaction at the temperature between 30 DEG C and 80 DEG C; adding a cationization reagent for a cationization reaction at the temperature between 30 DEG C and 90 DEG C; gelatinizing and cooling the obtained starches, utilizing acrylamide and cation monomers as mixed grafting monomers, adding initiating agents, performing a graft copolymerization reaction in the aqueous phase at the temperature between 40 DEG C and 80 DEG C, and obtaining a starch grafting copolymer. The starch grafting copolymer is a reinforcing agent capable of being used in improving the ring crush strength, the bursting strength, the stiffness and the like of papers.

The invention discloses a method for preparing hydroxyethyl starch. The starch raw materials are subjected to hydroxyethylation and acid hydrolysis treatment in a solvent medium respectively. The method for preparing the hydroxyethyl starch comprises the following steps: firstly, under the alkaline condition that the pH is 13-14, carrying out hydroxyethylation reaction by using ethylene oxide or chlorethanol in an amount which is 0.2 to 1.8 times mol of the starch as a hydroxyethylation reagent; secondly, hydrolyzing the starch raw materials which are subjected to the hydroxyethylation under the acidic condition that the pH is 1-3 to obtain the hydroxyethylation starch, wherein the weight-average molecular weight is 20 to 500kD; the molar degree of substitution is 0.1 to 0.9, and the substituted ratio at the C2 / C6 position is 3 to 20 and the substituted ratio at the C3 / C6 position is 0.1 to 8. The method for preparing the hydroxyethyl starch can prevent the starch structure from being damaged without pasting the starch, solve the problems that the control of the molecular weight of the products is inaccurate during acid hydrolysis, an organic residual solvent which is subjected to the hydroxyethylation is hardly removed and the like, and is favorable for industrialized production. Therefore, hydroxyethylation starch products with different molecular weights and / or degrees of substitution can be obtained.

The invention belongs to the technical field of paper strengthening, in particular to a method using starch as a paper dry strengthen agent. The method comprises the following steps: uniformly mixing starch accounting for 0.5-25% of oven dry mass of pulp with pulp, carrying out extrusion and concentration, heating for 8-150min at 70-100 DEG C to gelatinize starch, carrying out defibering and dispersion on the heated pulp, and manufacturing paper with pulp. The invention has simple process, low production cost and less pollution, improves the strength of paper by 30-110%, has above 80% of starch retention ratio, and can improve the retention ratios of fillers and fiber fines.

The invention discloses a feed for juvenile prawns. The feed comprises one or more selected from the following components: fish meal, wheat bran, bean cake, vinasse, yeast, a composite vitamin premix, a traditional Chinese medicinal composite additive, a mineral matter premix and a feed adhesive. Weight parts of the above mentioned components are as follows: 10 to 40 parts of fish meal, 10 to 20 parts of wheat bran, 10 to 15 parts of bean cake, 1 to 2 parts of vinasse, 1 to 2 parts of yeast, 1 to 2 parts of the composite vitamin premix, 1 to 2 parts of the traditional Chinese medicinal composite additive, 1 to 2 parts of the mineral matter premix and 10 to 15 parts of the feed adhesive. According to the invention, Chinese herbal medicines are applied to prevent and treat fish and prawn diseases, which is in accordance with disease controlling criteria for development of nuisanceless aquaculture and production of green aquatic products, especially in accordance with demands for intensive and large-scale production in the current aquaculture industry; the Chinese herbal medicines compose a compound preparation in proportion, which enables synergistic effects of the medicines to be better performed; a steaming process is utilized to allow starch in the feed adhesive to agglutinate at different temperatures, so the degree of expansion is increased, the degree of gelatinization of the starch is substantially improved, the effects of a chemical adhesive in feed processing can be totally replaced, and sinking performance and binding performance of the feed are enhanced, which is beneficial for growth and culture of juvenile prawns.

Barley with reduced SSII activity has a starch structure with reduced amylopectin content and a consequent high relative amylose content. Additionally the grain can have a relatively high β glucan content. The structure of the starch may also be altered in a number of ways which can be characterised by having a low gelatinsation temperature but with reduced swelling. The viscosity of gelatinised starch of the starch is also reduced. There is a chain length distribution of the amylopectin content and a low crystallinity of the starch. The starch is also characterised by having high levels of lipid associated starch exhibiting very high levels of V form starch crystallinity. The dietary fibre content of the starch is high. This has desirable dietary and food processing characteristics.