17results about "Maltose production" patented technology

The invention belongs to the technical field of functional resin, and particularly relates to macroporous adsorption resin for sugar decolorization and a preparation method and application thereof.The preparation method of the macroporous adsorption resin for sugar decolorization comprises the following steps that water, a dispersing agent and a polymerization inhibitor are mixed, and a water phase is obtained; mixing a monomer, an initiator and a pore-foaming agent to obtain an oil phase; mixing the water phase and the oil phase, standing, shaping, carrying out polymerization reaction, and removing the pore-foaming agent to obtain matrix white balls; the monomer comprises at least one of divinylbenzene, styrene and methyl acrylate; in the oil phase, the mass ratios of the monomer, the initiator and the pore-foaming agent are respectively 36.38%-41.5%, 0.34%-0.45% and 58.05%-63.19%; and mixing the matrix white balls and Lewis acid, and carrying out a post-crosslinking reaction to obtain the macroporous adsorption resin for sugar decoloration. The synthesis process is low in equipment requirement, simple and convenient to operate, low in cost and environment-friendly; and the prepared product has high decolorization rate and can be regenerated.

This invention discloses a mutant of raw starch hydrolase with improved stability and its applications. Using α-amylase AmyZ2 as the starting enzyme, and through computer-aided design to clarify the mutation site, a mutant was heterologously expressed in Bacillus subtilis, resulting in an α-amylase with improved stability. When using raw corn starch as a substrate, the mutant exhibits 1.57 times the specific enzyme activity and 2 times the stability of the starting enzyme. While maintaining the specific enzyme activity, the mutant enzyme shows a significant improvement in thermostability. This mutant has potential application value in the production of starch sugars using raw corn starch as a substrate.

The utility model belongs to the technical field of syrup distillation equipment, and particularly relates to a distillation device for controlling the sugar content of malt syrup, which comprises a tank body, a bracket arranged at the bottom of the tank body, a feed port and an air outlet arranged at the top of the tank body, and a discharge pipe arranged at the lower part of the side wall of the tank body, a first heating piece and a second heating piece are arranged around the center of the inner wall and the center of the inner side of the tank body, a motor is arranged on the outer side of the top of the tank body, a Z-shaped connecting shaft is arranged in the tank body, one end of the connecting shaft penetrates out of the tank body to be connected with an output shaft of the motor, and the other end of the connecting shaft is connected with stirring blades. According to the device, a worker can conveniently and timely adjust the heating plate I and the heating plate II along with the height of the liquid level in the tank body, the sugar degree of feed liquid can be controlled through the branch pipes, the feed liquid is uniformly heated through the stirring blades, scaling on the inner wall of the tank body due to local overheating of the feed liquid is not easily caused, the distillation and concentration effects are ensured, and energy can be fully utilized.

The utility model relates to the technical field of evaporation and concentration, discloses a maltose evaporation and concentration device, and solves the problems that when maltose is evaporated through a heating pipe, the maltose close to a container is gradually reduced after being evaporated, and in the reduction process, the inner wall of the container is directly contacted with the maltose, so that the maltose cannot be evaporated. The problems that the evaporation efficiency in a container is reduced due to the fact that maltose adheres to the inner wall of the section, where maltose drops, of the container, coking is caused, and meanwhile due to the fact that the maltose is high in adhesion, most maltose adheres to the inner wall of the container in the discharging process, and cleaning is difficult are solved. An exhaust pipeline is installed on the outer side of the concentration tank, a connecting device is installed at the upper end of the concentration tank, the concentration tank comprises a heat preservation outer shell, a bottom plate is fixedly installed at the lower end of the heat preservation outer shell, a heating pipe is installed on the inner side of the heat preservation outer shell, a heat preservation inner shell is installed on the inner side of the heating pipe, and a stirring assembly is installed in the heat preservation inner shell.

The present invention relates to a method for producing disaccharides using beta-glucosidase and its cofactors, and a composition for inducing enzyme production in a Trichoderma strain, which contains the produced disaccharides. Specifically, the method comprises inducing beta-glucosidase and a divalent metal ion, manganese ion (Mn ion), as a cofactor, on a glucose substrate. 2+ ), magnesium ion (Mg 2+ ), zinc ion (Zn 2+ ) or copper ions (Cu 2+ ), the disaccharide production rate can be increased and disaccharides can be obtained at a high concentration. In addition, since the composition with a high content of disaccharides produced by the production method of the present invention has an excellent effect of inducing enzyme production in Trichoderma strains, it is possible to improve the enzyme productivity of Trichoderma by applying a fermentation process that utilizes the produced disaccharides at a high concentration.

The method has remarkable advantages, the prepared sweet potato syrup is high in total sugar yield and maltose yield and excellent in comprehensive aspect of sensory evaluation, and the core purpose of the method is that the sweet potato syrup is prepared by optimizing the use conditions of alpha-amylase and beta-amylase, so that the sweet potato syrup is prepared. The defects of the traditional process and the existing compound enzyme method are effectively overcome, and a new path is opened up for efficient and high-quality production of the sweet potato sugar.

The present disclosure is directed to the generation and use of a synthetic tetrasaccharide designed based on a portion of a mycobacterial polar glycolipid as a vaccine antigen to limit or prevent tuberculosis infections.

The utility model provides a decolorizing device for starch sugar processing, which relates to the technical field of starch sugar and comprises a supporting box, a decolorizing cavity and a temporary storage cavity are respectively arranged at the upper end and the lower end in the supporting box, a first guide pipe is arranged between the decolorizing cavity and the temporary storage cavity in a penetrating manner, and a temporary storage box is arranged at the lower end in the temporary storage cavity. And a screening mechanism is mounted in the temporary storage box in a clamping manner. A user pours raw materials and activated carbon into the decolorizing cavity along the first feeding pipe and the second feeding pipe respectively, so that the raw materials and the activated carbon are located at the inner joint of the decolorizing cavity to perform decolorizing processing on the raw materials, and meanwhile, the motor drives the rotating shaft and the stirring frame to rotate; the stirring frame stirs the raw materials and the activated carbon, the contact area of the raw materials and the activated carbon is further increased, the adsorption efficiency and adsorption effect of the activated carbon on other impurities of pigments in the raw materials are improved, and the production efficiency of the raw materials is improved.

The present invention relates to the field of membrane separation technology, and specifically to a maltose syrup saccharified liquid separation and purification device and a purification process thereof, comprising a separation tank, a coarse filter component is provided on the upper inner side of the separation tank, a horizontally arranged diversion baffle is fixedly connected to the middle of the separation tank, a plurality of groups of circumferentially distributed piston-type extrusion liquid supply components are slidably connected to the diversion baffle, the top of the separation tank is connected to a driving structure for driving the piston-type extrusion liquid supply component, and the lower part of the piston-type extrusion liquid supply component is connected to a liquid collecting cylinder through a membrane filter; when the equipment is running, if a membrane filter needs to be replaced, the corresponding piston-type extrusion liquid supply component is closed, and after the membrane filter is removed, the component is rotated to re-slide and connect with the diversion baffle, and other components are not affected and can filter normally. After the new membrane filter is installed, the piston-type extrusion liquid supply component is rotated and limited, and the liquid inlet channel is opened to resume work, thereby ensuring uninterrupted saccharified liquid separation and improving production efficiency.

The invention discloses a raw starch hydrolase mutant Amyh1: G207H with improved stability and an application of the raw starch hydrolase mutant Amyh1: G207H. According to the invention, alpha-amylase Amyh1 is taken as a starting enzyme, and on the basis, computer-aided design is carried out, mutation sites are clear, heterologous expression is carried out in escherichia coli, and alpha-amylase with improved stability is obtained. When raw corn starch is used as a substrate, the specific enzyme activity of the mutant is 1.1 times that of a starting enzyme, and the stability of the mutant is 3.5 times that of the starting enzyme. When algae raw starch is used as a substrate, the specific enzyme activity of the mutant reaches 2622U / mg, which is 1.02 times of that of a starting enzyme. Compared with the starting enzyme, the thermal stability of the mutant enzyme is greatly improved while the same hydrolytic ability and specific enzyme activity are maintained, and the shelf life of the mutant enzyme is prolonged. The mutant has potential application value in industrial production with algae raw starch as a substrate.

The invention provides a maltose deslagging device which comprises a box body, a filter cartridge penetrating through the bottom of the box body is arranged in the box body, the filter cartridge is of a cylindrical structure with an upper opening and a lower opening, and a slurry storage cavity is formed between the box body and the filter cartridge; a feeding hopper is arranged on one side of the upper end of the box body, the feeding hopper is communicated with the interior of the filter cartridge, a plurality of filter holes are formed in the lower half part of the filter cartridge, a pressing block is arranged in the filter cartridge, a connecting rod is arranged above the pressing block, longitudinal telescopic rods are arranged on the two sides of the box body respectively, and the upper ends of the longitudinal telescopic rods are connected with the two ends of the connecting rod respectively; the lower end of the box body is provided with an embedding groove for inserting the baffle plate; and the lower surface of the box body is provided with a discharging hopper. The filter holes are formed in the lower end of the filter cylinder and are lower than the pressing block, a one-way filter path is formed, maltose is prevented from flowing back to the position above the pressing block, filtered residues can be directionally discharged along the discharging hopper under the action of the pressing block and the push plate by controlling opening and closing of the baffle, and the orderliness and high efficiency of residue discharging are greatly improved.

The invention provides a preparation system of malt syrup. According to the preparation system provided by the invention, the yield is improved and the production cost is reduced by optimizing the configuration of production equipment and the technological process. The at least three plate-and-frame filter presses are all used for treating saccharification clear liquid, two plate-and-frame filter presses are opened, and one plate-and-frame filter press is standby, so that the operation pressure of the filter presses is reduced, and the operation time and the feeding amount are improved. The rotary drum filtering system is used for treating saccharification turbid liquid, the saccharification turbid liquid is filtered by a rotary drum and then enters the plate-and-frame filter pressing system, then sugar liquid obtained after the turbid liquid is filtered by the rotary drum filtering machine passes through the plate-and-frame filter pressing machine again, the absorbance and the light transmittance of the sugar liquid can be greatly improved, and the recovery rate of the sugar liquid is improved.

The invention discloses a method for relieving microbiological contamination in the saccharification process of malt syrup production, and belongs to the technical field of starch sugar production. The method comprises the following steps: adjusting the pH value of starch milk to 5.1-5.4, adding acid-resistant alpha-amylase for spray liquefaction, and then performing secondary spray enzyme deactivation to obtain liquefied liquid; carrying out vacuum flash evaporation on the liquefied liquid, cooling to 60.5-64.0 DEG C by using a plate heat exchanger, adding the liquefied liquid and saccharifying enzyme into a saccharifying tank, and saccharifying to obtain saccharified liquid; and finally, carrying out decoloration, filtration, ion exchange treatment and vacuum concentration on the saccharified liquid to obtain the malt syrup. According to the method, by selecting the acid-resistant amylase and adjusting the initial pH and the saccharification temperature, bacterial contamination in the saccharification process of maltose production is remarkably relieved, so that the problem of bacterial contamination in the saccharification process is solved, unstable saccharification quality caused by bacterial contamination in the saccharification process is avoided, metabolites generated by bacterial contamination are reduced, the refining burden is relieved, and the saccharification quality is improved.

The invention discloses a production method and device of malt syrup, and relates to the field of food production. In the production process of the malt syrup, a secondary injection technology is reasonably arranged, so that the DE value of the obtained finished product is kept in a range of 38-46, meanwhile, the iodine value of the finished product is reduced, and the filtering speed of the material is increased; the plate-and-frame filter press and the rotary drum filter are used and cooperate to improve the feeding speed and the discharging quality; and the falling film evaporator MVR is used in the evaporation process, so that the production efficiency is improved.

The invention discloses a raw starch hydrolase mutant Amyh1: C142Q with improved stability and an application of the raw starch hydrolase mutant Amyh1: C142Q. According to the invention, alpha-amylase Amyh1 is taken as a starting enzyme, and on the basis, computer-aided design is carried out, mutation sites are clear, heterologous expression is carried out in escherichia coli, and alpha-amylase with improved stability is obtained. When raw corn starch is used as a substrate, the specific enzyme activity of the mutant is 1.05 times that of a starting enzyme, and the stability of the mutant is 3.25 times that of the starting enzyme. Compared with the starting enzyme, the thermal stability of the mutant enzyme is greatly improved while the specific enzyme activity is maintained. The mutant has potential application value in starch sugar production with corn raw starch as a substrate.

The utility model relates to evaporation equipment technical field discloses a kind of multiple-effect evaporation device, including multiple evaporators connected in series in turn, the steam outlet of previous evaporator is connected with the steam inlet of following evaporator, first group multiple-effect evaporator is for several in front of multiple evaporators, second group multiple-effect evaporator is for several behind;The outlet of feed pipeline is connected with the material inlet of the evaporator of the first evaporator of second group multiple-effect evaporator most front part, the material outlet of previous evaporator in second group multiple-effect evaporator is connected with the material inlet of following evaporator, the material outlet of last evaporator in second group multiple-effect evaporator is connected with the material inlet of last evaporator of first group multiple-effect evaporator, the material outlet of following evaporator in first group multiple-effect evaporator is connected with the material inlet of previous evaporator.A kind of maltose preparation equipment, including the multiple-effect evaporation device of any preceding. The present application has the advantages of high thermal efficiency, high evaporation efficiency and improving product quality.

The invention discloses a method for preparing millet maltose through double alkalization and millet maltose, and belongs to the technical field of food processing technologies. The specific process comprises the following steps: carrying out saccharification and fermentation on fresh malt obtained after wheat seed sprouting and decocted millet together to obtain a squeezed liquid, then mixing the squeezed liquid with slaked lime and baking soda for alkalization to obtain an alkaline sugar liquid, then carrying out filtering operation twice to obtain a stock solution, and finally decocting the stock solution and then condensing into paste to prepare the double-alkalization millet maltose. According to the millet maltose obtained through the preparation method, the pH value of the millet maltose can be effectively adjusted, the pH value is increased to 7.0-8.0 from the existing pH value ranging from 5.0-6.0, the millet maltose is alkalescent, meanwhile, it can be guaranteed that the taste of the millet maltose is clearer, smoother and more delicious, and the millet maltose is suitable for being eaten for a long time or used in traditional Chinese medicine compounds.