517 results about "Nattokinase" patented technology

The invention provides a method for preparing natto, belonging to the field of food microorganism and fermentation engineering. The natto prepared by the existing natto preparation method is bitter and has stink, thus influencing the natto taste. The method for preparing natto in the invention comprises the following steps: preprocessing, soaking, cooking at high temperature, cooling, inoculating, performing primary fermentation, performing secondary fermentation after auxiliary materials are added, and performing subpackage to obtain the finished product. The beneficial effects of the preparation method lie in that the fermentation substrate types and C/N ratio can be changed in the fermentation process by performing twice fermentations and adding auxiliary materials before the secondaryfermentation, thus reducing the generation of unpleasant flavor substances, acquiring natto with different flavors, further improving the natto taste while having no influence on natto kinase activity, greatly lightening the specific bitter and stink of the nano, being more suitable for taste of people in China and having more comprehensive nutrition.

A method for preparing solid natto bacillus microecological agent by solid fermenting is disclosed, which belongs to the biological engineering technique field. The strain is separated from natto as natto bacillus which is named as Bacillus natto S703 and the preservation number of the strain is CCTCC M207147. The sieving method comprises the following steps: utilizing the character that the natto bacillus produces natto kinase to do dilute flat separation for natto leach, seeding the obtained single colony in the primary sieving culture medium of the flat which contains fiber, selecting single colony to purify and obtain the fitful natto bacillus according to the size of transparent coil diameter and colony diameter. The strain is inoculated in the solid ferment culture medium which comprises bran, soya bean waste, corn starch, dipotassium hydrogen phosphate and magnesium sulfate, which can produce the natto bacillus microecological agent by solid fermenting, drying and grinding. The prepared natto bacillus microecological agent can be chicken feed, which is provided with obvious modification for daily chicken weighing, feed coefficient and survival rate.

The invention relates to a bacillus subtilis subso natto for producing natto kinase and application thereof. The bacillus subtilis subso natto (bacillus subtilis subso natto LNUB236), CCTCC No.: M 208156. The bacillus subtilis subso natto is subject to activation of culture, seed liquid and fermentation liquor are prepared, and the natto kinase is extracted. The invention relates to application of the natto kinase to preparing a health product for preventing and treating cerebral thrombosis. Constituents of the health product are proportioned by weight: lyophilized natto powder : natto kinase : natto kinase : evening primrose oil=1:2.0-3.0:1.0-1.5. The bacillus subtilis subso natto LNUB236 has high natto kinase yield, the highest enzyme activity is 431.455IU/ml in the event of production in a 30l fermenter, and the prepared natto kinase-containing health product has the advantages of high enzyme activity, obvious effect and no side effect.

Bacilliis natto NLSSc with the preservation number CGMCC No. 0724 is Gram staining positive, non-acid fast, straight or near straight, (0.6-0.8)x(1.5-2.0) micron sized and aerobic; has mesial and un-swelled spore with the spore number inside one sporange cell not more than one, meso diamino heptane diacid and glycin contained in the cell wall, no characteristic saccharum and peripheral flagellum; and can be grown well in five kinds of natural organic culture medium and can form relatively thick mycoderm and butter fat colored colony with smooth edge in soybean cake powder culture medium. Bacilliis natto can be cultured in culture medium with nitrogen source to obtain thrombus dissolving matter natto kinase and the cultured matter may be extracted to obtain powdered matter as the additive for thrombolytic health food.

The present invention relates to freeze-dried powder containing bacillus natto and nattokinase and a preparation method thereof, the process of which comprises that: firstly, culture medium is confected and sterilized, wherein, the culture medium components with the weight percentage are 8 percent to 15 percent of soybean flour, 1 percent to 5 percent of sucrose, 0.4 percent to 0.6 percent of NaCl and the water with the rest quantity, the pH value of which is 6.8 to 7.2; secondly, the bacillus natto is inoculated, and the inoculation quantity is 2 percent to 8 percent; thirdly, the bacillus natto after the inoculation is cultured and fermented for 20 to 28 hours under the temperature of 36 DEG C to 38 DEG C; fourthly, fermentation liquid is frozen and dried in vacuum, the glycerin with 1 percent to 7 percent of the weight of the fermentation liquid is used protecting agent to be added into the fermentation liquid, which is frozen under the temperature of subzero 18 DEG C in advance to be frozen and dried in vacuum for 12 to 20 hours and then is resolved under the temperature lower than 30 DEG C. The method has low cost and is in favor of the industrial production. Under the precondition of maintaining the nattokinase activity, the freeze-dried process also holds other nutrient component in the bacillus natto and the fermentation liquid, which reduces the nattokinase purification cost.

The invention belongs to the technical field of drinks and discloses fermented soybean milk, fruit juice soymilk and a preparation method of the fermented soybean milk and the fruit juice soymilk. The method comprises the following steps of: preparing raw soybeans, sequentially performing sorting, washing, soaking, cooking, beating, separating and filtering treatments on the raw soybeans, homogenizing, sterilizing, cooling to the temperature of 40-45 DEG C, and adding lactic acid bacteria and milk sugar for fermenting in 12-16 hours to obtain the fermented soybean milk; and on the basis of taking the raw soybeans, the lactic acid bacteria, the milk sugar, sugar, a thickening agent, a sweetener, milk, nattokinase, fruit juice, acid, buffer salt, essence and water as raw materials, preparing the fermented soybean milk, mixing, performing a constant volume process, blending, homogenizing, sterilizing and cooling to obtain the fermented soymilk. According to the invention, the amount of the soybean beany flavor in the product is reduced by 80-90%, the fruit juice is added to the soybeans so as to complement each other and enable the taste to be blander and delicate, in addition, the nattokinase is added to the soymilk, so that the nutrition of the product can be improved; the product can be placed at a room temperature for 6 months with stable state, no bleeding and a deposition rate of less than 1%.

The invention relates to bacillus subtilis generating nattokinase and a method for producing nattokinase by fermenting the same. The bacillus subtilis generating nattokinase is named as TK-1, the class name is bacillus subtilis, the collection number is CGMCC No.4731, the collection date is 4/2/2011, the collection address is: 3# yard, No.1 West Beichen Road, Chaoyang District, Beijing, and the collection organization is China General Microbiological Culture Collection Center. A fermentation medium contains bean pulp, and the fermentation method is mainly characterized in that the fermentation medium contains the bean pulp. According to the invention, the bacillus subtilis generates nattokinase through solid state fermentation of bean pulp serving as a raw material; the bean pulp is relatively cheap and has high protein content, thereby being favorable for the growth of thalli; the maximum enzymatic activity of the obtained nattokinase reaches 5,670 FU per gram of dry basis; and the maximum viable count can reach 7-109 cfu per gram of dry basis.

The invention relates to a functional lactobacillus plantarum plant subspecies having a holesterol lowering function and a preparation method of a compound bacterial powder of the plant subspecies, and belongs to the application fields of functional food and microecologics. According to the preparation method, the lactobacillus plantarum plant subspecies Zhang-LL CGMCC No. 6936 is used for preparing Zhang-LL strain freeze-dried powder by virtue of culture activation, fermentation, bacterial sludge collection and freeze-drying, and the viable count of the freeze-dried powder is 3.50*10<11> CFU/g. Bacillus natto BNZ3 CGMCC No. 9146 is used for preparing bacillus natto power by virtue of culture activation, enlarged cultivation, fermentation and drying, and the activity of nattokinase in the bacillus natto power is 2000IU/g; monacus purpureus Zhang-MP CGMCC No. 9221 is used for preparing monacus purpureus powder by virtue of culture activation, enlarged cultivation, solid-state fermentation, drying and grinding; as being tested, the content of the active substance Monacolin K in the monacus purpureus powder is 4.98mg/g. The prepared lactobacillus plantarum plant subspecies powder is thoroughly mixed with the bacillus natto power and the monacus purpureus powder in the ratio of 1:1:1(w/w), thereby obtaining compound bacterial powder having the serum cholesterol lowering effect.

Disclosed are bacillus licheniformis engineering bacteria for nattokinase production and a method for producing nattokinase by using the bacillus licheniformis engineering bacteria, which belong to the technical fields of microorganism genetic engineering and enzyme engineering. According to the invention, a nattokinase gene of bacillus subtilis MBS04-6 is obtained through PCR technology augmentation. Bacillus licheniformis BL10 is utilized as an expression host; promoter P43 of bacillus subtilis 168 is taken as a promoter; a signal peptide of extracellular serine protease Vpr of bacillus licheniformis WX-02 is taken a signal peptide; and a terminator sequence of alpha-amylase of bacillus licheniformis WX-02 is taken as a terminator. The expression elements are connected to shuttle vector pHY300PLK to form an expression vector, and the expression vector is transformed into the bacillus licheniformis BL10 to obtain the bacillus licheniformis engineering bacteria BL10 (pP43SNT) for nattokinase production. The bacterial strain has been deposited with the China Center for Type Culture Collection (CCTCC) at September 10th, 2013, and the accession number is CCTCC NO:M2013401. The invention also provides a method of the bacterial strain for producing nattokinase, and the maximum enzyme activity can reach 11.37 FU/mL in a liquid fermentation medium.

The invention discloses a natto beverage and a preparation method thereof. The natto beverage contains a fermentation product obtained by deep fermenting beans with natto bacillus liquid, the used natto bacillus is a bacillus subtilis natto subspecies ODK-BN1 strain with the preservation number of CCTCC No. M207055; the preparation method of the natto beverage comprises the steps of: firstly deep fermenting beans with natto bacillus liquid to obtain a fermentation product, and then preparing the liquid fermentation product and edible auxiliaries into beverages according to a conventional method. By adopting the natto bacillus strain which is anoxia-tolerant, high-temperature resistant and has high yield of nattokinase, and adopting a liquid deep fermentation method to prepare the natto beverage, therefore, the invention has the advantages of simple method, low cost, a plurality of beneficial physiologically-active components in the product, attractive appearance and flavour, safe and non-toxic, good stability, long preservation time, easy acceptance by consumers and broad market prospects.

The invention relates to a bacillus subtilis strain for excreting nattokinase at high efficiency. An aprN gene of bacillus subtilis NK is amplified by a PCR (polymerase chain reaction) technique; codons of initial thirty amino acids are optimized according to the codon preference of the bacillus subtilis, a recombination expression plasmid pHT01-aprN is established, and the correctness is verified through the restriction enzymes digestion, PCR amplification and sequencing. The recombination expression plasmid pHT01-aprN is imported into the bacillus subtilis 168 by an electric shocking method, and is performed with resistance screening by adopting chloramphenicol, so as to obtain engineering bacteria. After the fermenting condition is optimized, and the expression is induced by IPTG, the highest enzyme activity in a shake culture fermenting liquid is 289U/ml; the highest enzyme activity in a high-density fermenting liquid is 7778U/ml; the highest enzyme activity of a nattokinase preparation prepared by affinity column chromatography is 981731U/g.

The invention provides a preparation method for fibrinolytic fermented soya beans. The preparation method comprises the steps of activating strains, preparing a mucor seed solution; preparing a bacillus natto seed solution; processing soya beans; inoculating; culturing and after-ripening. Under the conditions that mucor and bacillus natto produced protease and bacillus natto produced plasmin are used as evaluation indexes, the mucor grows well after bacillus natto is inoculated; influence to protease content is not large; nattokinase activity in the obtained fermented soya beans can reach 823.51 U/g; and protease activity reaches 1983.91 U/g. By seeking optimum conditions for fermentation of the fermented soya beans, the time required by a conventional fermentation process for the fermented soya beans is greatly shortened without influencing the flavor of the fermented soya beans. At the same time, during an operation process, condition control is convenient, thereby facilitating production operations. The preparation method can finish co-fermentation of the bacillus natto and the mucor to the soya beans only by using an original production line of the fermented bean curd blanks, without increasing any equipment, thereby greatly saving production cost.

A Bacillus natto culture is treated with chitosan, and then filtered, concentrated, and dried. According to this method, a Bacillus natto culture extract containing nattokinase and 1 μg or less of vitamin K2/g dry weight is obtained.

The invention relates to the field of microorganisms, and specifically relates to bacillus subtilis LSSE-22 and an application thereof. The invention provides the bacillus subtilis LSSE-22 with the preservation number of CGMCC No.4970. The invention also provides the application of the bacillus subtilis LSSE-22. The invention provides a natto food which is prepared by fermenting bean substrates through the bacillus subtilis LSSE-22. The bacillus subtilis LSSE-22 has higher natto kinase production activity, and when chick-peas are used as substrates, the highest activity of natto kinase reaches 356.25FU/g (the dry weight of the chick-peas). The natto kinase and an antioxidant active substance total phenol are prepared through simultaneous separation by using an ethanol separation method, the activity of the natto kinase reaches 2852.62FU/g (dry weight), the content of the total phenol reaches 14.78mg gallic acid/g (dry weight), and the method is simple and efficient.

Provided is a production method for bacillus natto and cordyceps fungus composite enzyme series of products. The main products comprise bacillus natto and cordyceps fungus composite low molecular weight enzyme beverage, composite enzyme capsules and composite enzyme tablets. The production method comprises a single-microorganism fermentation technology and a mixed-microorganism fermentation technology. The bacillus natto employs bacillus subtilis natto, and the cordyceps fungus employs cordyceps sinensis or cordyceps militaris. The bacillus natto can inhibit pathogenic bacteria. The generated nattokinase can dissolve thrombus, inhibit generation of angiotensin and reduce blood pressure. No acids are generated during fermentation of the bacillus natto, and no sweeteners need to be added into the products, which is beneficial to health. The cordyceps fungus has immune modulating functions, has anti-tumor, bacteriostasis and antiinflammation effects, and has some effects on nervous systems and livers. The effective substances of the products are stable active ingredients generated from the living microorganism, and with low molecular weight, such as peptides with low molecular weight, oligosaccharides, saponins, isoflavone, cordycepin, phosphatidylcholine, trace elements and the like. The products do not need to be stored at low temperature and has a long storage life. The products contain essential amino acids and vitamins of human body, and are nutritive and healthy.

The invention discloses nutrient black soya bean powder prepared by fermentation of bacillus natto and a preparation method thereof. The preparation method comprises the following steps: (1) peeling black soya bean; (2) superfine grinding; (3) cooking for sterilizing; (4) fermenting by using bacillus natto, namely inoculating the amplified bacillus natto to the sterilized material and cultivating for 1-5 days under the conditions that the agitating speed of a rotary shaker is 160rpm and the temperature is 30 DEG C; (5) carrying out compound enzyme enzymolysis, namely adding deionized water to adjust pH after fermentation is finished, adding cellulose, papain and lysozyme to carry out enzymolysis for 0.5-6 hours; and (6) carrying out spray drying, so as to obtain nutrient powder. The product nutrient black soya bean powder disclosed by the invention is rich in nattokinase and polypeptide, and is reasonable in process, abundant in nutrients, fine in texture, good in solubility and long in storage period. The product, namely the nutrient black soya bean powder obtained by the method, can be prepared into capsules, tablets and granules by a conventional method, can be used as a health-care food, and has significant effects of helping to dissolve thrombus, reducing blood fat and preventing liver injury.

The invention discloses a method for preparing high-activity nattokinase by taking black beans as raw material, belonging to the technical field of biology. The method comprises the following steps: soaking the black beans by using a special nutrient solution, cooking the black beans after soaking and further inoculating bacillus natto to perform fermentation, wherein the special nutrient solution comprises the following components: lactose, tryptone, Na2HPO4, NaH2PO4, MgSO4 and CaCl2. The method further comprises the steps of performing extraction separation and freeze-drying on a fermentation product. The nattokinase obtained by adopting the method has high enzyme activity, which can achieve 42500IU/g, and the nattokinase has the advantages of high enzyme activity, low ammonia smell and good taste in comparison with the nattokinase produced by taking yellow beans as the raw material and performing a traditional fermentation method; and the content of nutritional components in obtained fermented black bean residue is also obviously improved. The method has the advantages of short fermentation period, simple preparation process and high bioavailability, and is conductive to industrial production.

A health-care food to be eaten together with rice or bread is prepared from natto, preserved fruit containing VC and K, sugar, edible salt, and solid soy sauce powder. Its preparing process is also disclosed.

The invention belongs to the technical field of microorganism fermentation engineering and relates to a method for preparing nattokinase through solid-state fermentation. The method includes: respectively preparing a bevel culture medium, a seed solution culture medium and a fermentation culture medium; inoculating bacillus natto onto the bevel culture medium for culture to obtain activated bacillus natto, picking and placing 1-2 rings into the seed solution culture medium for oscillation culture to serve as a fermentation seed solution; sterilizing and then naturally cooling the fermentation culture medium, spraying the fermentation seed solution into the fermentation culture medium, adding water, and stirring well; paving a thin layer in a beaker, using gauze to seal, sequentially performing fermentation and after-ripening for 24 h, and adding normal saline; performing extraction and centrifuging to obtain supernate rich in nattokinase. The method is simple in process and convenient to operate, raw materials are easy to get and low in cost, and nattokinase prepared by the method is high in activity and has obvious economic benefit.