1327 results about "Streptococcus thermophilus" patented technology

The invention relates to a composite probiotics feed additive containing lactic acid bacteria. The composite probiotics feed additive is prepared by spraying, freezing, drying and compounding 40-60% of lactobacillus acidophilus, 15-20% of lactobacillus amylophilus, 5-10% of lactobacillus salivarius, 5-10% of streptococcus thermophilus, 5-10% of bacteroides thetaiotaomicron and 5-10% of glucose. All strains are separated from pig intestines chime. With the consideration of each part of an intestinal canal of animal, the lactic acid bacteria which produce lactic acid of the front section of the intestinal canal are combined with the bacteroides thetaiotaomicron which dissolve cellulose and polysaccharide of the rear section of the intestinal canal, the proportion among the bacteria is similar to the composition of corresponding bacteria in the intestinal canal of a healthy animal, so that the respective advantages can be developed well, the health of the animal is improved further, the feed digestibility is improved, and the production performance of the animal is improved.

The invention belongs to the field of gene engineering and discloses a target sequence recognized by a CRISPR (clustered regularly interspaced short palindromic repeat)-Cas9 (CRISPR-associated protein 9) system stemming from streptococcus thermophilus. The target sequence is shown as the n-20th position of any one of SEQ ID NO: 1-88, wherein n ranges from 1 to 5. The invention further discloses sgRNA (single guide ribonucleic acid) with a sequence being 5'-recognition sequence-recruitment Cas9 sequence-3' and a coding DNA (deoxyribonucleic acid) molecule thereof, and a DNA sequence corresponding to the recognition sequence is as same as the target sequence. The invention further discloses the CRISPR-Cas9 system comprising Cas9 and the sgRNA and/or Cas9-carried coding sequence and an sgRNA coding sequence vector. The invention further discloses application of the CRISPR-Cas9 system to CCR5 gene editing and HIV (human immunodeficiency virus) infection drug preparation. CCR5 gene editing can be achieved to protect cells from HIV infection.

The invention relates to a method for preparing a highland barley-wheat germ deep processing product, in particular to a process for preparing highland barley-wheat germ biological fermented milk, which solves the problems that the highland barley-wheat germ deep processing product has a single form and that nutrients cannot be absorbed by a human body completely. Lactobacillus bulgaricus, streptococcus thermophilus and lactobacillus acidophilus are inoculated according to a certain ratio, and a beta-glucan functional factor, dietary fibers, trace elements, microorganisms and the like of highland barley, and the nutrients such as high-quality plant proteins, vitamin E and the like of the wheat germ are utilized. The method mainly comprises the steps of: the compounding of the highland barley and the wheat germ, grinding into thick liquid, enzymolysis, the addition of milk and lactic acid fermentation. The prepared highland barley-wheat germ lactobacillus beverage is rich in proteins, lactic acid bacteria, beta-glucan, various trace elements, vitamins and the like.

The invention relates to fermented chenopodium quinoa willd milk, flavored fermented chenopodium quinoa willd milk, a chenopodium quinoa willd sour milk beverage, and a preparation method of products, and belongs to the technical field of food industry. Chenopodium quinoa willd is used as a raw material for pulping, the protein content is not less than 2.9g/100g, a yoghourt fermenting agent is inoculated, fermentation is performed until acidity reaches to 70DEG T or above so that the fermented chenopodium quinoa willd milk is obtained. The yoghourt fermenting agent comprises a mixed bacterium agent which is obtained by mixing lactobacillus bulgaricus with streptococcus thermophilus in the mass ratio of the lactobacillus bulgaricus to the streptococcus thermophilus being 1 to 1 and of which the inoculum concentration is 20-25g/T, a mixed bacterium agent in which the mass ratio of lactobacillus acidophilus to bifidobacteria and to lactobacillus casei is 1 to 1 to 1 and of which the inoculum concentration is 12-15g/T, and lactobacillus plantarum of which the preservation number is CGMCC No.11763 and of which the inoculum concentration is 60-80ml/T. The chenopodium quinoa willd is used as the raw material, composite enzyme hydrolysis and composite active probiotic fermentation are used, and active probiotic fermented chenopodium quinoa willd milk and series products are prepared, so that industry blank is filled.

The invention relates to a livestock and poultry excrement microbial deodorizing agent, and a preparation method and an application thereof. The invention discloses a composite biological preparation used in public toilet deodorization. The composite biological preparation comprises a lactobacillus strain which is lactobacillus sp with a collection number of CGMCC NO: 5983, a lactobacillus strain which is streptococcus thermophilus with a collection number of CGMCC NO: 5985, and an orange peel extraction liquid. The invention also discloses the preparation method of the composite biological preparation. The method comprises preparation methods of a liquid composite biological preparation and a solid biological preparation. The invention also discloses a purpose of the composite biological preparation.

The invention discloses to a preparation method of R-polysaccharide fermentation liquor and a preparation method of a composite preservative of the R-polysaccharide fermentation liquor, relating to a preparation of fermentation liquor and a preparation method of a composite preservative of the fermentation liquor, which solves the problems of complex preparation technology of the traditional R-polysaccharide preparation, and high production cost and low yield of the preparation of a preservative of the traditional R-polysaccharide preparation. The preparation method of the R-polysaccharide fermentation liquor comprises the following steps of activating bacillus subtilis, streptococcus thermophilus and brewers' yeast; collecting and washing after being centrifuged; fermenting and cultivating the thalluses after mixing; and purifying the fermentation liquor. The preparation method of the preservative is as follows: mixing nisin, natamycin, propionic acid, antioxidant of bamboo-leaf, chitosan, ethylene diamine tetraacetic acid (EDTA), cellulose, ethanol, sorbitol and oxygen-enriched active water; and mixing the mixed liquor and the R-polysaccharide fermentation liquor to be reacted. The preparation of the R-polysaccharide fermentation liquor has the advantages of simple technology, no three-waste generation, no pollution discharge and no peculiar smell. The R-polysaccharide fermentation liquor is prepared into a composite preservative, the production cost is ** yuan/ton, and the yield is high.

The invention discloses a lactic acid bacteria composition capable of regulating intestinal flora functions and preparation method and application thereof. The active ingredients of the lactic acid bacteria composition capable of regulating intestinal flora functions are prepared from the following raw materials by weight: 20-40 parts of Lactobacillus acidophilus, 40-60 parts of Bifidobacterium longum, 20-60 parts of Lactobacillus rhamnosus, 30-60 parts of Streptococcus thermophilus and 35-75 parts of fructo-oligosaccharide. According to the lactic acid bacteria composition capable of regulating intestinal flora functions, lactic acid bacteria in the composition can reach a certain magnitude, and the raw materials are in reasonable compatibility, and have a good function of regulating intestinal flora. The lactic acid bacteria composition has good stability in a long time, and is suitable for the diabetics to eat.

The invention relates to a probiotic composition and a preparation. The composition consists of three main probiotics, namely lactobacillus, bifidobacteria and streptococcus thermophilus. The composition can be regulated to be suitable for different intestinal canal characteristics of more people and meet the market requirement and has the advantages of safety, reliability and obvious effect.

The invention discloses symbiotic functional high-protein Greek yogurt utilizing polymeric whey protein as a main thickening agent and a preparation method thereof, and belongs to the field of functional health-care foods. The symbiotic functional high-protein Greek yogurt mainly comprises liquid raw material milk, sugar, inulin, polymeric whey protein, pectin and a protein increasing material. The preparation method comprises polymeric whey protein preparation and Greek yogurt preparation. A probiotic fermentation agent used in the preparation method comprises two basic bacteria such as lactobacillus bulgaricus and streptococcus thermophilus and also comprises two probiotics such as bifidobacteria and lactobacillus acidophilus. The symbiotic functional high-protein Greek yogurt has the characteristics of high nutritive value, high protein content, low fat content, fine texture, uniform structure and good taste. The symbiotic functional high-protein Greek yogurt contains the probiotics and dietary fibers and improves intestinal digestive system health. The preparation method can be operated easily, has a low production cost, saves energy, does not produce environmental pollution and has a high yield.

The invention provides a streptococcus thermophilus AR-333 strain and application thereof. The streptococcus thermophilus AR-333 strain is obtained through being separated from naturally fermented milk, and the collection number of the strain is CGMCC 10262. The streptococcus thermophilus AR-333 is fermented for 16h under the condition of 40 DEG C by skimmed milk; the yield of extracellular mucopolysaccharide reaches 256.97 mg/L; meanwhile, the streptococcus thermophilus is used as a yoghourt fermenting agent; the viscosity of yoghourt can be obviously improved; the tissue state of the yoghourt can be improved; good flavor is realized; the generated extracellular mucopolysaccharide has an immunologic competence regulating function; macrophages RAW264.7 can be simulated to release NO.

The invention discloses a method for making tofu coagulant by lactic acid bacteria fermenting yellow jelly water. After activating Streptococcus thermophilus and Lactobacillus bulgaricus, they are inserted into the yellow jelly water, and the inoculum amount is 0.8-3.5% of the weight of the yellow jelly water. The sucrose with 8-10% of the weight of yellow pulp water is fermented at 37-43 DEG C for 4-8 hours, and when the pH of the fermented liquid is 3.0-4.5, the liquid bean curd coagulant is obtained. The invention recycles yellow pulp water as waste, and obtains a novel natural bean curd coagulant through fermentation of lactic acid bacteria. The method has the advantages of simple process and convenient operation, and is beneficial to maintaining the activity of bacteria. In addition, waste utilization is economical and environmentally friendly, and it is an environmentally friendly technology. The method has the advantages of low cost, no pollution, simple process, simple operation, continuous production, high production efficiency, good biological activity and stability of the product, and the like.

The invention discloses a jerusalem artichoke-soybean fermentation beverage and a preparation method thereof. The beverage contains a jerusalem artichoke-soybean fermentation solution as a main component. The preparation method of the jerusalem artichoke-soybean fermentation solution comprises the following steps of: mixing jerusalem artichoke pulp and soya-bean pulp in a volume ratio of (3-5):1, heating and sterilizing, wherein the obtained mixture is used as a fermentation base material; and then inoculating mixture bacterium of lactobacillus bulgaricus, streptococcus thermophilus, monascus and beer yeast into the fermentation base material according to an inoculating amount of 3-5%, fermenting for 12-20hours at a temperature of 28-32 DEG C, filtering after finishing fermentation and then adding aroma enhancement yeast into the fermentation base material according to an inoculating amount of 1-2%, then fermenting for 48-60 hours again at the same temperature, and filtering a fermentation solution after finishing fermentation to obtain a jerusalem artichoke-soybean fermentation solution. The mass ratio of lactobacillus bulgaricus to streptococcus thermophilus to monascus to beer yeast is 2:2:4:2. The preparation method disclosed by the invention is unique; the obtained beverage has good mouth feel, good appearance and rich nutrition; and the immunity can be improved after drinking the beverage for a long time.

A method for preparing yoghourt rich in gamma-aminobutyric acid (GABA) relates to a method for preparing yoghourt and comprises the steps of resuscitating, purifying and activating lactobacillus plantarum NDC75017, lactobacillus bulgaricus 11057 and streptococcus thermophilus CICC 20379, respectively enlarging culture solutions and then mixing to obtain a leavening agent, and inoculating the leavening agent to sterilized milk to ferment. The GABA content in the yoghourt rich in GABA is 151.51mg/100g. High-yield GABA bacterial strains and existing commonly-used bacterial strains are compoundedand then fermented to prepare the yoghourt rich in GABA, all the bacterial strains are food-grade lactic acid bacteria, and the safety is high. In addition, products have double effects, and the yoghourt rich in GABA integrates physiological efficacy of the GABA and health-care effect of yoghourt, namely the yoghourt rich in GABA is provided with special physiological efficacy of the GABA and thehealth-care effect of the yoghourt and is novel health-care yoghourt.

The invention provides a preparation method of probiotics fermented pumpkin and carrot vegetable powder. The four probiotics, Lactobacillus rhamnosus, lactobacillus paracasei subsp. paracasei, streptococcus thermophilus, and lactococcus lactis subsp. Cremoris are adopted as the starting strains, which are then subjected to enlargement culture, preparation of lyophilized powder strains, compounding of lyophilized powder, thus obtaining composite probiotic lyophilized powder. The preparation method comprises the steps of: employing cleaned and seed removed pumpkins and cleaned carrots in a weight ratio of 3:1, adding drinking water of the same weight to the mixed material into a colloid mill for slurry refining, matching the slurry with 5% white sugar, after disinfection and cooling, inoculating the composite probiotic lyophilized powder with 0.01% of the slurry, carrying out fermentation for 48h, and then conducting centrifugal dehydration, wall material embedding with sodium alginate and a flaxseed gum, as well as freeze drying, thus obtaining the probiotics fermented pumpkin and carrot vegetable powder.

The present invention discloses a preparation method of high-SOD-activity fruit and vegetable enzyme powder. The enzyme powder is prepared by squeezing Chinese watermelon flesh and apple flesh into pulp, respectively fermenting filtrate using saccharomyces cerevisiae and hansenula anomala and streptococcus thermophilus and lactobacillus plantarum, fermenting filter residues with rhizopus oryzae suspension, mixing the three fermentation liquor, conducting secondary fermentation on the mixture, and finally spray-drying the mixture. The prepared enzyme powder is good in mouthfeel and flavor, high in SOD activity and high in lactic acid bacteria content.

The invention discloses low-salt fermented leaf mustard. The salt content in the low-salt fermented leaf mustard is lower than 5g/kg and the nitrite content in the low-salt fermented leaf mustard is lower than 4mg/kg. The low-salt fermented leaf mustard has low salt content and nitrite content and is beneficial to health of human bodies. The invention also discloses a preparation method of the low-salt fermented leaf mustard, which comprises the following steps: (1) preparing fermentation base feed liquid, firstly, preparing water extract of ginger and garlic to obtain a extracting solution of a natural flavoring agent, adding salt, isomaltose hypgather and fructo-oligosaccharide into the extracting solution of the natural flavoring agent and uniformly mixing to obtain the fermentation base feed liquid; (2) selecting leaf mustard, preprocessing the leaf mustard, placing the preprocessed leaf mustard into a fermentation container, adding the fermentation base feed liquid, adding a concentrated streptococcus thermophilus solution and a concentrated lactobacillus bulgaricus solution, then sealing the fermentation container and fermenting at room temperature; (3) after fermenting for one day, opening the fermentation container, inoculating a concentrated bifidobacterium adolescentis solution into the fermentation container, then sealing up the fermentation container, and continuously fermenting for 4 to 6 days at room temperature so as to obtain the low-salt fermented leaf mustard.