Abstract: The disclosure relates to an enzymatic preparation method of inclusion complexes of tributyrin, and belongs to the technical field of oil microencapsulation. The disclosure combines enzymatic synthesis of cyclodextrin and inclusion of tributyrin with cyclodextrin, including enzymatic preparation of cyclodextrin with a CGT enzyme. Tributyrin is added in the preparation process; after reaction, Tween is added, and homogenization and spray drying are carried out. The effect of the finally obtained tributyrin powder is much better than that of single inclusion of tributyrin with cyclodextrin. The disclosure is simple in process, low in cost and convenient in operation; reaction processes are free of toxicity and pollution; there are no toxic reagent residues; the inclusion effect is obvious, and better utilization of a nutritional additive tributyrin in actual production is facilitated.

Abstract: The present disclosure discloses a low-viscosity thermosetting starch adhesive for particleboards, and a preparation method therefore, belonging to the technical field of adhesive preparation. The adhesive of the present invention selects N-hydroxyethyl acrylamide or acetoxyethyl methacrylate as the crosslinking monomer, which has a low degree of crosslinking in the process of adhesive preparation to avoid the problem of increasing viscosity, but can cross-link quickly during the hot pressing process, forming a network structure, and improving the water resistance of the adhesive; and furthermore, itaconic acid is added to promote the self-crosslinking reaction of the crosslinking monomer in the hot-pressing process, thus further improving the water resistance.

Abstract: The present disclosure discloses a thermosetting starch adhesive for a wood-based panel and a preparation method therefor, and belongs to the technical field of preparation of adhesives. In the present disclosure, starch is used as a main raw material, and after acid hydrolysis thereof, a semi-continuous seed emulsion polymerization method is adopted to improve control of monomer polymerization stability. After grafting is completed, a cross-linking monomer with polymerizable double bonds and condensable methylol functional groups is added for copolymerization. The cross-linking monomer is also added in a semi-continuous manner. After the cross-linking reaction is completed, the reaction mixture is gelatinized and incubated, and finally a thermosetting adhesive which can be used for bonding of hot-pressed wood-based panels is obtained.

Abstract: The present disclosure discloses a low-viscosity thermosetting starch adhesive for particleboards, and a preparation method therefore, belonging to the technical field of adhesive preparation. The adhesive of the present invention selects N-hydroxyethyl acrylamide or acetoxyethyl methacrylate as the crosslinking monomer, which has a low degree of crosslinking in the process of adhesive preparation to avoid the problem of increasing viscosity, but can cross-link quickly during the hot pressing process, forming a network structure, and improving the water resistance of the adhesive; and furthermore, itaconic acid is added to promote the self-crosslinking reaction of the crosslinking monomer in the hot-pressing process, thus further improving the water resistance.

Abstract: Disclosed is a method for preparing high-load oral paclitaxel capsule for a slow release in colon, belonging to the field of porous starch drug loading. The preparation method of the present disclosure includes the following steps: (1) dripping an ethanol solution of paclitaxel into a water phase and drying the solution to obtain an amorphous paclitaxel microsphere; (2) redissolving the paclitaxel microsphere prepared in step (1) in the ethanol solution, dispersing porous starch in the ethanol solution for adsorption, volatilizing a solvent in an oven, washing the porous starch with the ethanol solution to remove unadsorbed paclitaxel, and centrifuging same to obtain a precipitate, namely the porous starch loaded with paclitaxel; and (3) dispersing the porous starch loaded with paclitaxel prepared in step (2) in a chitosan solution, dropwise adding the solution into a phytic acid solution, and stirring the solution for 4 hours to obtain a coated capsule.

Abstract: Disclosed is a method for preparing high-load oral paclitaxel capsule for a slow release in colon, belonging to the field of porous starch drug loading. The preparation method of the present disclosure includes the following steps: (1) dripping an ethanol solution of paclitaxel into a water phase and drying the solution to obtain an amorphous paclitaxel microsphere; (2) redissolving the paclitaxel microsphere prepared in step (1) in the ethanol solution, dispersing porous starch in the ethanol solution for adsorption, volatilizing a solvent in an oven, washing the porous starch with the ethanol solution to remove unadsorbed paclitaxel, and centrifuging same to obtain a precipitate, namely the porous starch loaded with paclitaxel; and (3) dispersing the porous starch loaded with paclitaxel prepared in step (2) in a chitosan solution, dropwise adding the solution into a phytic acid solution, and stirring the solution for 4 hours to obtain a coated capsule.

Abstract: The present disclosure provides a preparation method of eucalyptol emulsion and application thereof in biopesticides, belonging to the field of emulsion preparation. The method for preparing the eucalyptol emulsion includes the steps of: (1) adding eucalyptol into a cyclodextrin solution to obtain a mixed solution; (2) evenly mixing an emulsifier and a co-emulsifier to obtain a mixed solution; (3) adding the solution obtained in step (2) and water into the solution obtained in step (1), emulsifying to obtain the eucalyptol emulsion. In steps (1), (2) and (3), the mass percents of substances from which the eucalyptol emulsion is prepared are as follows: 0.5%-1% of cyclodextrin, 2.5%-25% of the eucalyptol, 1.25%-15% of the emulsifier, 0.3%-3.75% of the co-emulsifier and 55.3%-95.5% of the water, and the sum thereof is 100%. The emulsion is extremely stable without stratification after being placed at 20° C., 40° C. and 60° C. for 30 days and also has a good insecticidal effect.

Abstract: The disclosure discloses a liquid foundation using starch as a filler and a preparation method thereof, belonging to the technical fields of deep processing of starch and preparation of cosmetics. In the disclosure, starch is modified by an OSA reagent and then homogenized and micronized to obtain a starch filler; powder materials and the water phase in the formula of the liquid foundation are sequentially added to the oil phase at a certain temperature; the mixture is sheared at low speed, homogenized, and cooled to room temperature; and the starch filler is added to prepare the liquid foundation using starch as a filler, wherein the formula includes 10-20 parts of oil phase, 65-75 parts of water phase, 5-10 parts of toner, and 5-15 parts of starch filler.

Abstract: The present disclosure discloses a method for extracting a duckweed turion starch, and belongs to the technical field of agriculture and food. The extraction method of the present disclosure includes the following steps: conducting drying and rehydration on a duckweed turion to obtain a rehydrated turion, soaking the rehydrated turion in a solvent, and then conducting washing and filtration to obtain a decolorized duckweed turion; or conducting beating on a fresh duckweed turion, soaking the fresh duckweed turion in a solvent, and then conducting washing and filtration to obtain a decolorized duckweed turion slurry; and putting the decolorized duckweed turion or the decolorized duckweed turion slurry in a dispersion liquid for extraction at a rotation speed of 6,000-18,000 rpm at 25-50° C. for 5-60 min, and then conducting filtration, centrifugation, washing and drying to obtain the duckweed turion starch.

Abstract: The present disclosure discloses a method for preparing short-clustered dextrin, and belongs to the field of bio-modified starch. The method includes: collaboratively modifying to-be-modified starch by adopting Ro-GBE and Gt-GBE. The present disclosure utilizes two starch branching enzymes from different microorganism sources to collaboratively modify corn starch. The Ro-GBE is firstly added for pretreatment, then the Gt-GBE is added. The Ro-GBE catalyzes the to-be-modified starch to form a chain segment structure which is more conducive to further utilization for the Gt-GBE, thin and long starch molecule is transformed into short-clustered structure under the catalysis of Gt-GBE, and thus the slow digestibility of modified products is more obvious.

Abstract: The disclosure discloses a preparation method of a starch-based double emulsion embedding fat-soluble functional factors, belonging to the technical field of preparation of emulsions. The preparation method of the disclosure includes the following steps: (1) adding a hydrophilic emulsifier into gelatinized starch milk, and uniformly mixing; adding an oil phase containing fat-soluble functional factors and a lipophilic emulsifier, and forming an O1/W starch-based single emulsion embedding fat-soluble functional factors by shearing, where a mass ratio of the hydrophilic emulsifier to the lipophilic emulsifier is 2-3:1-2; and (2) dropwise adding the O1/W starch-based single emulsion embedding fat-soluble functional factors into an oil phase and a lipophilic emulsifier, uniformly mixing, and then allowing the mixture to stand for retrogradation; and obtaining the O1/W/O2 starch-based double emulsion embedding fat-soluble functional factors.

Abstract: The disclosure herein relates to a method for producing high-quality maltodextrin, and belongs to the technical field of maltodextrin. On the basis of a traditional enzymatic production process of maltodextrin, starch branching enzyme derived from Rhodothermus obamensis is introduced, an ?-1,4-glycosidic bond is cleaved, the cleaved short chain is ligated to a receptor chain to form an ?-1,6-branch point, so the degree of branching is increased and the maltodextrin has more cluster structures. Thereby, the aims that the stability of the maltodextrin is enhanced and the maltodextrin is not easy to retrograde are achieved, and the freeze-thaw stability of the maltodextrin is also improved. The method specifically comprises the steps of slurry preparation, spray liquefaction, starch branching enzyme action, filtration, decolorization, ion exchange, concentration, spray drying, and the like.

Abstract: The present disclosure disclosed is method for improving the transparency of starch liquefaction, and belongs to the field of biologically modified starch. The method changes the molecular structure of the starch liquefaction product by adding a 1,4-?-glucan branching enzyme from Rhodothermus obamensis, so the molecular structure has a smaller branched chain and a higher branching degree, thereby achieving the purpose of improving transparency and stability. The method comprises the steps of dissolving a starch liquefaction product in water according to a certain concentration to prepare an aqueous solution of the starch liquefaction product, and adding a 1,4-?-glucan branching enzyme to react at a certain temperature for a period of time, so as to improve the transparency of the starch liquefaction product during storage. The method provides a new idea for improving the stability of starch liquefaction products, and has great potential and application prospects.

Abstract: The present disclosure discloses a pH-sensitive starch-based microcapsule encapsulating a fat-soluble substance and a preparation method thereof, and belongs to the field of preparation of starch-based hydrogel microcapsules. The method of the present disclosure comprises performing acid hydrolysis on starch to obtain acid-hydrolyzed carboxymethyl starch, mixing the acid-hydrolyzed carboxymethyl starch with xanthan gum to obtain a compounded solution of starch and colloid, adding an emulsifier and the fat-soluble substance, emulsifying to obtain an emulsion, and drying to obtain the microcapsule.

Abstract: The disclosure discloses a production process and application of fermented tapioca starch for baking, and belongs to the fields of starch deep processing and food processing and production. The disclosure develops a production method of the fermented tapioca starch for baking. The method includes simple steps and greatly shortens a process cycle. By using tapioca starch as a main raw material and adding a specific amount of carbon source and a specific strain, under the action of fermentation and illumination in cooperation, the structure of the starch is improved. By adding the fermented tapioca starch, the effects of increasing the size of gluten-free Mochi bread, increasing pores of the bread and improving the texture and taste of the bread are realized.

Abstract: The disclosure relates to an enzymatic preparation method of inclusion complexes of tributyrin, and belongs to the technical field of oil microencapsulation. The disclosure combines enzymatic synthesis of cyclodextrin and inclusion of tributyrin with cyclodextrin, including enzymatic preparation of cyclodextrin with a CGT enzyme. Tributyrin is added in the preparation process; after reaction, Tween is added, and homogenization and spray drying are carried out. The effect of the finally obtained tributyrin powder is much better than that of single inclusion of tributyrin with cyclodextrin. The disclosure is simple in process, low in cost and convenient in operation; reaction processes are free of toxicity and pollution; there are no toxic reagent residues; the inclusion effect is obvious, and better utilization of a nutritional additive tributyrin in actual production is facilitated.

Abstract: The present disclosure discloses a method for preparing short-clustered dextrin, and belongs to the field of bio-modified starch. The method includes: collaboratively modifying to-be-modified starch by adopting Ro-GBE and Gt-GBE. The present disclosure utilizes two starch branching enzymes from different microorganism sources to collaboratively modify corn starch. The Ro-GBE is firstly added for pretreatment, then the Gt-GBE is added. The Ro-GBE catalyzes the to-be-modified starch to form a chain segment structure which is more conducive to further utilization for the Gt-GBE, thin and long starch molecule is transformed into short-clustered structure under the catalysis of Gt-GBE, and thus the slow digestibility of modified products is more obvious.

Abstract: The present disclosure discloses a thermosetting starch adhesive for a wood-based panel and a preparation method therefor, and belongs to the technical field of preparation of adhesives. In the present disclosure, starch is used as a main raw material, and after acid hydrolysis thereof, a semi-continuous seed emulsion polymerization method is adopted to improve control of monomer polymerization stability. After grafting is completed, a cross-linking monomer with polymerizable double bonds and condensable methylol functional groups is added for copolymerization. The cross-linking monomer is also added in a semi-continuous manner. After the cross-linking reaction is completed, the reaction mixture is gelatinized and incubated, and finally a thermosetting adhesive which can be used for bonding of hot-pressed wood-based panels is obtained.

Abstract: The disclosure herein relates to a method for producing high-quality maltodextrin, and belongs to the technical field of maltodextrin. On the basis of a traditional enzymatic production process of maltodextrin, starch branching enzyme derived from Rhodothermus obamensis is introduced, an ?-1,4-glycosidic bond is cleaved, the cleaved short chain is ligated to a receptor chain to form an ?-1,6-branch point, so the degree of branching is increased and the maltodextrin has more cluster structures. Thereby, the aims that the stability of the maltodextrin is enhanced and the maltodextrin is not easy to retrograde are achieved, and the freeze-thaw stability of the maltodextrin is also improved. The method specifically comprises the steps of slurry preparation, spray liquefaction, starch branching enzyme action, filtration, decolorization, ion exchange, concentration, spray drying, and the like.

Abstract: The present disclosure discloses a pH-sensitive starch-based microcapsule encapsulating a fat-soluble substance and a preparation method thereof, and belongs to the field of preparation of starch-based hydrogel microcapsules. The method of the present disclosure comprises performing acid hydrolysis on starch to obtain acid-hydrolyzed carboxymethyl starch, mixing the acid-hydrolyzed carboxymethyl starch with xanthan gum to obtain a compounded solution of starch and colloid, adding an emulsifier and the fat-soluble substance, emulsifying to obtain an emulsion, and drying to obtain the microcapsule.