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2796 results about "Amylase" patented technology

Amylase (/ˈæmɪleɪz/) is an enzyme that catalyses the hydrolysis of starch (Latin amylum) into sugars. Amylase is present in the saliva of humans and some other mammals, where it begins the chemical process of digestion. Foods that contain large amounts of starch but little sugar, such as rice and potatoes, may acquire a slightly sweet taste as they are chewed because amylase degrades some of their starch into sugar. The pancreas and salivary gland make amylase (alpha amylase) to hydrolyse dietary starch into disaccharides and trisaccharides which are converted by other enzymes to glucose to supply the body with energy. Plants and some bacteria also produce amylase. As diastase, amylase was the first enzyme to be discovered and isolated (by Anselme Payen in 1833). Specific amylase proteins are designated by different Greek letters. All amylases are glycoside hydrolases and act on α-1,4-glycosidic bonds.

Method for extracting refined cordycepin and cordycepin polysaccharide from cordyceps mititaris

The present invention relates to a method for extracting the purificatory cordycepin and the cordyceps amylase from the cordyceps militaris, belonging to the fields of medicines and health protection and chemical engineering. The cordyceps militaris powder is extracted and filtrated by a cooling seep method, the filter residue is mixed with ethanol, the supersonic wave assists to extract and offcenter, the supernatant has the processes of concentration and alcohol-precipitating, then the alcohol-precipitated supernatant has the processes of decompression, concentration and elution, the eluted liquid has the processes of concentration and crystallization and recrystallization using the n-butyl alcohol, at last the purificatory amylase is obtained after freezing and drying. The preparation progress of the present invention only uses water and ethanol as the solvent, thus reducing the pollution, the resin is capable of being reused a plurality of times with low cost. The present invention fully exploits the biological activity ingredients of the cordyceps militaris, realizes the coextraction of the cordycepin and the cordyceps amylase, guarantees the biological activities of the cordycepin and the cordyceps amylase, farthest increases the utilization rate of the raw material to the largest extent, reduces the manufacturing cost. The present invention is suitable for the large-scale industrialized manufacture.

Tobacco flavor and preparation method thereof

ActiveCN103710150AEnhance functional ingredientsFunctional ingredients are more efficient than traditional extraction methodsTobacco preparationEssential-oils/perfumesBiotechnologyMaillard reaction
The invention relates to a tobacco flavor and a preparation method thereof. The preparation method comprises the following steps: (1) sequentially adding cellulase, pectinase, alpha-amylase and Serratia peptidase in an extraction process of compound Chinese herbal medicines, fully extracting active ingredients in the compound Chinese herbal medicines through a biological enzymolysis technology, adding 95% ethanol for inactivation and performing secondary extraction after the completion of enzymolysis, and filtering and concentrating after full extraction; (2) performing Maillard reaction on a concentrated solution obtained by preparation and compound amino acids; (3) performing staged treatment on a Maillard reaction solution obtained by preparation through a membrane separation technology according to molecular weight and functionality; (4) performing combination and compounding on membrane separation components obtained in various stages by smoking quality evaluation, and finally preparing the tobacco flavor provided by the invention. The flavor is added into cigarettes in an appropriate ratio and can further realize the effects of enhancing flavor, reducing irritation, covering mixed gas, coordinating smoke gas, reducing irritation of the oral cavity of the throat and improving the aftertaste in the oral cavity.

Method for preparing dithiocarbamate-based modified porous starch

The invention relates to a method for preparing dithiocarbamate-based modified porous starch. The method comprises the steps that: using starch as the raw material; carrying out enzymolysis on the starch for 1 to 26 hours under the condition that the pH is between 4 and 6 and the temperature is between 30 and 60 DEG C by a complex enzyme consisting of a saccharifying enzyme and an alpha-amylase; drying the obtained product to prepare porous starch; and after carrying out crosslinking, etherification and aminating modification on the porous starch, grafting the product with carbon disulfide under the alkaling conndition to obtain the dithiocarbamate-based modified porous starch. Compared with the conventional porous starch, the dithiocarbamate-based modified porous starch of the invention has strong absorption characteristic and high adsorptive selectivity. When the adsorption effect is reduced, the dithiocarbamate-based modified porous starch is taken out and immersed in 2mol.L-1 of HNO3 solution to carry out desorption, the desorption ratio is over 90 percent, and the absorption effect is not reduced by repeated desorption. The invention has commendable economic and social benefits, and can be used for treatment of heavy metal ions in waste water in galvanization, battery and mining industries and the like.

Bacillus pumilus, probiotics preparation and preparation method and application thereof

The invention discloses bacillus pumilus, a probiotics preparation and a preparation method and application thereof. The Bacillus pumilus LV149 is preserved in China center for type culture collection (CCTCC) in Nov. 23th, 2011, and the preservation number is CCTCC NO: M 2011411. The bacillus pumilus LV149 has strong extracellular protease, lipase and amylase activities, has wide rejection capability to vibrio and has no hemolytic activity. The Bacillus pumilus LV149 serves as fermenting bacterial strains and is performed with solid fermentation, drying and smashing so as to prepare bacillus pumilus probiotics preparation which uses Bacillus pumilus LV149 as the active ingredients. The bacillus pumilus probiotics preparation can be added into prawn feeds for feeding prawns, so that growth of prawn intestinal pathogenic vibrio can be restrained, prawn vibriosis can be reduced, simultaneously prawn growth is promoted, fish bait coefficient is reduced, quality of commodity is improved, culture cycle is shortened, accordingly culture risk and culture cost are reduced, biological safety is high and the bacillus pumilus, the probiotics preparation and the preparation method and application thereof have wide application prospect in aquaculture.

Condensed multi-enzyme medical cleaning agent

The invention relates to a condensed multi-enzyme medical cleaning agent. The cleaning agent contains surfactants, a detergent auxiliary agent, a solubilizing agent, an enzymic preparation, a foam inhibitor and a preservative, wherein the surfactants are a non-ion surfactant and an anion surfactant. The cleaning agent comprises the following formula components in percentage by weight: 5 to 10 percent of alkoxyl fatty alcohol, 3 to 5 percent of alkyl polylucoside, 5 to 10 percent of alkanol polyether, 5 to 10 percent of sodium xylene sulfonate, 0.5 to 1.5 percent of sodium sulfate, 0.5 to 1 percent of calcium chloride, 2 to 4 percent of disodium ethylene diaminetetraacetate, 5 to 10 percent of hydrogenated castor oil, 6 to 12 percent of dipropylene glycol monomethyl ether, 5 to 10 percent of glycerol, 2 to 6 percent of proteinase, 1 to 5 percent of amylase, 1 to 5 percent of lipase, 0.5 to 1 percent of cellulase, 0.1 to 0.5 percent of methylparaben and propyl hydroxybenzoate preservative, 0.1 percent of essence, 0.1 percent of pigment and the balance of deionized water. Through the cleaning agent, all the biological residues adhered in and out of a medical apparatus can be quickly and effectively decomposed and cleaned and aluminum oxide playing a role in protection on the metal surface layer is not damaged.
Owner:徐宏汇 +1
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