727 results about "Enterococcus" patented technology

The present invention demonstrated the potential use of Lactobacillus johnsonii D115 as a probiotic, as a prophylactic agent or as a surface treatment of materials against human and animal pathogens such as Brachyspira pilosicoli, Brachyspira hyodysenteriae, Shigella sonnei, Vibrio cholera, Vibrio parahaemolyticus, Campylobacter jejuni, Streptococcus pneumoniae, Enterococcus faecalis, Enterococcus faecium, Clostridium perfringens, Yersinia enterocolitica, Escherichia coli, Klebbsiella pneumoniae, Staphylococcus aureus, Salmonella spp., Bacillus cereus, Aspergillus niger and Fusarium chlamydosporum. The proteineous antimicrobial compound was partially characterized and found to be heat tolerant up to 121° C. for 15 min, and acid tolerant up to pH1 for 30 min at 40° C. The compound is also stable to enzymatic digestion, being able to retain more than 60% antimicrobial activity when treated with pepsin and trypsin.

The invention relates to a compound microbial agent for degrading antibiotic and pesticide residues as well as preparation and application thereof, and belongs to the field of biotechnology and environmental protection. Multi-thallus compound microbial powder is prepared from the compound microbial agent according to the weight percentage of living microbes to the total amount of compound microbial powder as follows: 10%-15% of bacillus subtilis, 10%-15% of aspergillus niger, 10%-15% of bacillus mucilaginosus, 10%-15% of enterococcus faecalis, 8%-12% of bacillus licheniformis, 8%-12% of bacillus megaterium, 8%-12% of pseudomonas fluorescens, 5%-8% of lactobacillus plantarum, 5%-8% of bacillus polymyxin and 6%-8% of streptococcus thermophiles. The compound microbial agent has the effects of degrading antibiotic and pesticide residues, fermenting and composting organic matter, acting as functional fertilizer and repairing the environment, and can solve the problems of secondary pollution caused by antibiotic residues in culture feces and resource utilization of organic waste and realizes biodegradation of the antibiotic and pesticide residues in soil when applied to the agricultural ecological environment, thereby being of great value and practical significance in restoration of agricultural ecological environment and protection of human health.

The invention discloses compound functional sugar with a function of adjusting intestinal flora. The compound functional sugar contains functional oligosaccharide, L-arabinose, dietary fiber and probiotics and is characterized in that bifidobacterium, lactobacillus and other beneficial bacteria can be proliferated; meanwhile, the proliferation of escherichia coli, enterococcus and other harmful bacteria is restrained to adjust the intestinal flora; and the small intestine peristalsis can be promoted, the defecating time can be shortened, the defecation quantity can be increased to play a role in defaecation.

The invention provides a feed fermenting agent, fermented feed and a preparation method thereof, and relates to the technical field of animal product cultivation. The feed fermenting agent is mainly prepared from lactobacillus plantarum, enterococcus faecalis, bacillus subtilis, saccharomyces cerevisiae, lactobacillus cellobiosas, a complex enzyme preparation and the like. The fermented feed is prepared from the feed fermenting agent and fermentation raw materials by using a preparation method of carrying out fermentation in a device which is in one-way exhaust. According to the feed fermenting agent and the fermented feed, disclosed by the invention, the problems of high livestock cultivation cost caused by poor nutritive value, low animal digestion and absorption rate and abuse of antibiotic drugs during cultivation, long fermentation time and slow fermentation starting of existing livestock breeding feed are solved, and high absorption and conversion rate of nutrient contents of the fermented feed are achieved; the fermented feed contains a large amount of probiotics for protecting intestine health of animals, so that the organism immunity of the animals is increased, and the use of antibiotics during livestock cultivation is reduced.

Compositions and methods for modulating immunity and vaccine efficacy in animals are disclosed. The compositions and methods utilize probiotic organisms, specifically probiotic Enterococcus strains, and are particularly applicable to felines.

The invention relates to a new type antibiotic containing an antibody analog, a preparation method and an application method thereof, which belong to the field of biological medicaments. The new type antibiotic containing an antibody analog comprises colicin E1, Ia, Ib, A, B, N or a water pore canal domain thereof and an antibody analog, wherein the antibody analog is formed by connecting the carboxyl terminal of VHCDR1 of immunoglobulin with the amidogen terminal of VHFR2 and connecting the carboxyl terminal of VHFR2 with the amidogen terminal of VLCD; and porin is identified specifically by the immunoglobulin. The sterilization capability of the antibiotic is thousands of times of that of commonly used antibiotics. Because the action mechanism is special, pathogen is difficult to produce medicament resistant property; human normal cells are not harmed in the process of sterilization; and the new type antibiotic containing an antibody analog can be used for preparing medicaments of resisting meningococcus, vancocin enterococcus, methicillin staphylomycin or multi-medicament resistant cyanomycosis.

The present invention provides human binding molecules specifically binding to enterococci and having killing activity against enterococci, nucleic acid molecules encoding the human binding molecules, compositions comprising the human binding molecules and methods of identifying or producing the human binding molecules. The human binding molecules can be used in the diagnosis, prophylaxis and / or treatment of a condition resulting from Enterococcus.

DNA-based methods employing amplification primers or probes for detecting, identifying, and quantifying in a test sample DNA from (i) any bacterium, (ii) the species Streptococcus agalactiae, Staphylococcus saprophyticus, Enterococcus faecium, Neisseria meningitidis, Listeria monocytogenes and Candida albicans, and (iii) any species of the genera Streptococcus, Staphylococcus, Enterococcus, Neisseria and Candida are disclosed. DNA-based methods employing amplification primers or probes for detecting, identifying, and quantifying in a test sample antibiotic resistance genes selected from the group consisting of blatem, blarob, blashv, blaoxa, blaZ, aadB, aacC1, aacC2, aacC3, aacA4, aac6'-lla, ermA, ermB, ermC, mecA, vanA, vanB, vanC, satA, aac(6')-aph(2''), aad(6'), vat, vga, msrA, sul and int are also disclosed. The above microbial species, genera and resistance genes are all clinically relevant and commonly encountered in a variety of clinical specimens. These DNA-based assays are rapid, accurate and can be used in clinical microbiology laboratories for routine diagnosis. These novel diagnostic tools should be useful to improve the speed and accuracy of diagnosis of microbial infections, thereby allowing more effective treatments. Diagnostic kits for (i) the universal detection and quantification of bacteria, and / or (ii) the detection, identification and quantification of the above-mentioned bacterial and fungal species and / or genera, and / or (iii) the detection, identification and quantification of the above-mentioned antibiotic resistance genes are also claimed.

The invention discloses microbial feed additive used for pigs, and a preparation process thereof; the prescription is as follows: 1 portion of bacillus licheniformis, 1 portion of bacillus subtilis, 2 portions of bifidobacterium, 2 portions of enterococcus faecalis, 2 portions of enterococcus faecium, 1 portion of boas-oppler bacillus, 1 portion of lactobacillus casei, 1 portion of lactobacillus lactis, 1 portion of plant lactobacillus, 1 portion of candida utilis, 1 portion of saccharomyces cerevisiae, 80kg to 100kg of panela, 3kg to 5kg of salt, 5kg to 8kg of vinegar, 3kg to 5kg of lysine, 1kg to 2kg of methionine, and 1000L of pure water; the weight of each portion of strain is 2g to 5g. The preparation process is as follows: strain preparation, nutrient broth preparation, inoculated fermentation and check. The invention reduces the quantity of the used individual strain, and the strain quality is safe and reliable. The production process is simple and feasible, the effect is obvious; therefore, the invention has promotion value.

Disclosed is a composition and method for the treatment and prevention of bad breath, halitosis, gingivitis, and / or periodontitis that contains one or more varieties of probiotic bacteria from the groups Lactobacillus, Bacillus, Escherichia, Enterococcus, Streptococcus, and Bifidobacterium, and / or a species of the yeast genus Saccharomyces. The composition may be in a variety of forms, such as a toothpaste, mouthwash, oral spray, oral cream or gel, chewing gum, candy, lozenges, dissolvable pill or strip, or powder that may be sprinkled directly into the oral cavity.

The invention discloses a method for preparing an efficient probiotic preparation from macrofungi bacterial liquid (mycoplasm). The method comprises the following steps: preparing a liquid or a solid culture medium from agricultural and sideline products and culturing fungi to obtain a bacterial liquid or a mycoplasm; carrying out physical and biological treatment on the bacterial liquid or the mycoplasm to enable polysaccharide polypeptide substances to be released from cells and adding a nitrogen source and a carbon source to prepare a probiotics culture medium; and then inoculating the probiotics and culturing to obtain the efficient probiotic preparation. The fungi comprise medicinal (edible) fungi of lentinu edodes, agrocybe cylindracea, morchella, pholiota nameko, hericium erinaceus, bolete, pleurotus nebrodensis, pleurotus citrinopileatus, lucid ganoderma, coriolus versicolor, cordyceps taishanensis, poria cocos, bamboo fungus, lactarius deliciosus and the like; and the probiotics is one or more selected from bacillus, saccharomycete, lactobacillus, enterococcus, bifidobacterium and the like. The probiotic preparation prepared by the method disclosed by the invention is rich in active substances, such as polysaccharides and polypeptides, has better health and treatment effects that those of a conventional probiotic preparation and can be used as therapeutic drugs and health foods or feed additives of human and animal gastrointestinal diseases.

DNA-based methods employing amplification primers or probes for detecting, identifying, and quantifying in a test sample DNA from (i) any bacterium, (ii) the species Streptococcus agalactiae, Staphylococcus saprophyticus, Enterococcus faecium, Neisseria meningitidis, Listeria monocytogenes and Candida albicans, and (iii) any species of the genera Streptococcus, Staphylococcus, Enterococcus, Neisseria and Candida are disclosed. DNA-based methods employing amplification primers or probes for detecting, identifying, and quantifying in a test sample antibiotic resistance genes selected from the group consisting of blatem, blarob, blashv, blaoxa, blaZ, aadB, aacC1, aacC2, aacC3, aacA4, aac6′-IIa, ermA, ermB, ermC, mecA, vanA, vanB, vanC, satA, aac(6′)-aph(2″), aad(6), vat, vga, msrA, sul and int are also disclosed. The above microbial species, genera and resistance genes are all clinically relevant and commonly encountered in a variety of clinical specimens. These DNA-based assays are rapid, accurate and can be used in clinical microbiology laboratories for routine diagnosis. These novel diagnostic tools should be useful to improve the speed and accuracy of diagnosis of microbial infections, thereby allowing more effective treatments. Diagnostic kits for (i) the universal detection and quantification of bacteria, and / or (ii) the detection, identification and quantification of the above-mentioned bacterial and fungal species and / or genera, and / or (iii) the detection, identification and quantification of the above-mentioned antibiotic resistance genes are also claimed.

The invention discloses a composite microorganism preparation including the active components as follows: at least two of enterococcus faecalis, saccharomyces cerevisiae and bacillus subtilis, and as well as zymosan and corn starch. The preparation is composed of, by weight, 0.1-15 parts of powder of the enterococcus faecalis, 0.1-15 parts of powder of the saccharomyces cerevisiae, 0.1-10 parts of powder of the bacillus subtilis, 0.1 parts of the zymosan and 59.9-74.9 parts of the corn starch. Compared with the prior art, the enterococcus faecalis, saccharomyces cerevisiae and bacillus subtilis are organically combined so that advantages of the bacteria can be achieved completely. The preparation can adapt different hosts and conditions, can partially, even completely replace antibiotics, and can regulate ecologic balance in gastrointestinal tracts, promote growth, increase conversion rate of feeds and enhance immunity. The preparation can improve enteric microorganism environment in animals, inhibit growth of harmful bacteria and promote reproduction of beneficial bacteria, improves animal immunity and enhances disease resistance, supplies nutrients to animals, improves utilization rate of feed and promotes growth of the animals.

The invention relates to a method for fermentation production of a poultry bacterial agent by multi-bacteria miscible liquid, wherein aerobic bacteria, namely Bacillus subtilis, Bacillus licheniformis, bacillus natto, beer yeast, Aspergillus niger and Aspergillus oryzae are cultured in a shaking table according to different culture mediums, so as to culture a mother seed solution; simultaneously Lactobacillus acidophilus, bifidobacteria and enterococcus faecalis are subjected to anaerobic culture by utilization of Kille flasks, and a mother bacterial solution of photosynthetic bacteria is cultured by a Kille flask under the condition of illumination; the prior stock solution is inoculated into a seed tank for anaerobic culture and fermentation according to 4 percent of the inoculum concentration, and the fermentation time is between 48 and 60 hours; and the cultured seed liquid is inoculated into a productive tank for anaerobic culture and fermentation according to 10 percent of the inoculum concentration, the fermentation time is between 60 and 72 hours, and the fermentation end point is reached when the pH value is reduced to 4.0. The method has the advantages that the microscopic examination viable count of the bacterial agent is more than 5 billion per milliliter, so that the bacterial agent is safe and nontoxic, thereby not only improving the disease resistance of poultry but also promoting the quick growth of the poultry, reducing the feed-meat ratio and improving the quality of meat, eggs and milk.

The invention relates to a leaven dedicated for fermenting bed of microorganism engineering constituting in weight ratio: Lactobacillus of 15%-25%, enterococcus of 15-30%, yeast of 5-15%, bacillus subtilis of 10-30%, Bacillus licheniformis of 5-20%, Lactobacillus sporogenes of 5-20%; total live microbe being 5-10 hundred million / g. The leaven of the invention is composed of biotic bacteria with strong activity, and has definite composition and mechanism, and stable product quality, and good health effect for improving immunity of the animal and preventing disease, strong degradation ability for pig manure; the leaven can not degrade material of fermenting bed pad, can prolongs life of fermenting bed; the fermenting bed can be conveniently and simply manufactured, which saves more than 80% of labor.

The present invention provides one kind of feed level microbe additive and its preparation and application. The microbe additive includes mainly probiotics part and nutritious liquid part. The probiotics part contains acidophilic lactobacillus, fecal enterococcin and butynic clostridium; and the nutritious liquid part contains acetic acid, propanoic acid and butyric acid. The feed level microbe additive is taken by chickling in 24 hr after hatching, and this can reduce the use amount of antiseptic medicine obviously, raise daily weight gain, lower the feed / meat ratio and raise economic utility obviously. In addition, it has simple preparation and low cost.

The invention relates to novel forms of compounds displaying broad spectrum antibiotic activity, especially crystalline polymorphic forms and amorphous forms of such compounds, compositions comprising such crystalline polymorphic forms and amorphous forms of such compounds, processes for manufacture and use thereof. The compounds and compositions of the invention are useful in the pharmaceutical industry, for example, in the treatment or prevention of diseases or disorders associated with the use of antibiotics, chemotherapies, or antiviral therapies, including, but not limited to, colitis, for example, pseudo-membranous colitis; antibiotic associated diarrhea; and infections due to Clostridium difficile (“C. difficile”), Clostridium perfringens (“C. perfringens”), Staphylococcus species, for example, methicillin-resistant Staphylococcus, or Enterococcus including Vancomycin-resistant enterococci.

The invention provides a compound biological strain for feed. The compound biological strain comprises enterococcus faecalis, lactobacilli, saccharomycetes, bacillus subtilis and bacillus coagulans, wherein the bacterial count ratio of the enterococcus faecalis to the lactobacilli to the saccharomycetes to the bacillus subtilis to the bacillus coagulans is (0.5 to 1.5):(0.5 to 1.5):(0.1 to 0.5):(4 to 6):(0.5 to 1.5). The compound biological strain for feed and a preparation method of fermented feed provided by the invention have the advantages that the release of crude protein and amino acid in coarse feed can be promoted, and the animal absorption is facilitated.

The invention discloses a kit for quickly detecting 15 pneumonia pathogenic bacteria. The kit can detect streptococcus pneumoniae, staphylococcus aureus, haemophilus influenzae, mycoplasma pneumoniae, pseudomonas aeruginosa, baumanii, enterococcus faecalis, enterococcus faecium, klebsiella pneumoniae, escherichia coli, enterobacter cloacae, stenotrophomonas maltophilia, burkholderia cepacia, legionella pneumophila and chlamydia pneumoniae which cover clinically common pneumonia pathogenic bacteria difficult to culture. 16S rDNA and specific gene sequences corresponding to the pneumonia pathogenic bacteria are detected by combining gene chips with multiple asymmetric PCR reactions, and the categories of the bacteria in a to-be-detected sample are identified in genus and species. The kit makes up for the defect that current clinical detection of pneumonia pathogenic bacteria is not in time or comprehensive and a novel detection means for early diagnosis and early treatment of patients suffering from pneumonia is provided.

DNA-based methods employing amplification primers or probes for detecting, identifying, and quantifying in a test sample DNA from (i) any bacterium, (ii) the species Streptococcus agalactiae, Staphylococcus saprophyticus, Enterococcus faecium, Neisseria meningitidis, Listeria monocytogenes and Candida albicans, and (iii) any species of the genera Streptococcus, Staphylococcus, Enterococcus, Neisseria and Candida are disclosed. DNA-based methods employing amplification primers or probes for detecting, identifying, and quantifying in a test sample antibiotic resistance genes selected from the group consisting of blatem, blarob, blashv, blaoxa, blaZ, aadB, aacC1, aacC2, aacC3, aacA4, aac6'-lla, ermA, ermB, ermC, mecA, vanA, vanB, vanC, satA, aac(6')-aph(2''), aad(6'), vat, vga, msrA, sul and int are also disclosed. The above microbial species, genera and resistance genes are all clinically relevant and commonly encountered in a variety of clinical specimens. These DNA-based assays are rapid, accurate and can be used in clinical microbiology laboratories for routine diagnosis. These novel diagnostic tools should be useful to improve the speed and accuracy of diagnosis of microbial infections, thereby allowing more effective treatments. Diagnostic kits for (i) the universal detection and quantification of bacteria, and / or (ii) the detection, identification and quantification of the above-mentioned bacterial and fungal species and / or genera, and / or (iii) the detection, identification and quantification of the above-mentioned antibiotic resistance genes are also claimed.

The invention discloses enterococcus faecium and a preparation method thereof, relates to the field of microorganisms, and particularly relates to the enterococcus faecium and application thereof. A bacterium sample is acquired from the rumen of a slaughtered goat, subjected to directive breeding at the temperature of 32-42 DEG C under an anaerobic and photophobic condition, and separated and purified by use of a repeated divisional agar streak plate method so as to obtain enterococcus faecium L-01. The enterococcus faecium L-01 can be used as an animal microorganism fodder additive, has the effects of effectively inhibiting pathogenic bacterium in animal digestive tract, improving the micro-ecological environment of the digestive tract and enhancing the immunologic function of an animal body, can be used as a substitute product of antibiotics and can be used for effectively solving the existing serious situation.

The present invention relates to a vaccine for the prevention of lactic acidosis in a vertebrate, said vaccine comprising at least one isolated microorganism, or fragment or fragments thereof, wherein said microorganism is capable of producing lactic acid within the gut of said vertebrate, and wherein said microorganism is selected from the group consisting of: Clostridium-like species, Prevotella-like species, Bacteroides-like species, Enterococcus-like species, Selenomonas species, non-dextran slime producing Streptococcus species and non-slime producing lactic acid bacterial isolates.

The invention relates to a microbe vitamin premix material and a method for preparing the same, in particular to a microbe vitamin premix material consisting of a plurality of useful microbes and vitamins and a method for preparing the same. The microbe vitamin premix material comprises bacillus, microzyme, enterococcus, vitamin A, vitamin D3, vitamin E, vitamin K3 and vitamin 12, and is the microbe vitamin premix material generally for pigs, poultries, ruminant or aquatic animals. The microbe vitamin premix material has the animal immunization health care function as well as nutrient efficacy, and can improve illness resistant capability of animals, reduce the consumption of antibacterial drugs in feed, lower the drug resistant degree of bacteria, improve the feed utilization ratio, promote health of mankind and improve the ecological environment.

The present invention is directed to a wound or tissue dressing comprising a bacteria having the property of producing lactic acid from sugars by fermentation of the sugars. The bacteria preferably belongs to the family of lactic acid bacteria. The family of lactic acid bacteria refers to any bacteria belonging to a genus selected from the group consisting of Carnobacterium, Enterococcus, Lactobacillus, Lactococcus, Leuconostoc, Oenococcus, Pediococcus, Streptococcus, Tetragenococcus, Vagococcus and Weissella. There is also provided a wound or tissue dressing comprising an absorbent compound for absorbing wound exudate, wherein said wound or tissue dressing is attached to or comprises a lactic acid bacterium. The utility of the present invention is demonstrated by use of the wound or tissue dressings in methods for treating a wound or damaged tissue in an individual, said method comprising the steps of contacting said wound or damaged tissue with the wound or tissue dressing according to the invention, thereby treating the wound or damaged tissue. The treatment results in healing of the wound or in accelerated healing of the wound. There is also provided the use of a lactic acid bacteria in the manufacture of a wound or tissue dressing for treating or accelerating the healing of a wound in an individual.

The invention discloses a deodorant special for livestock and poultry farms and application thereof, wherein the deodorant is composed of the following strains: 106-108 lactobacillus acidophilus per milliliter, 107-109 lactobacillus reuteri per milliliter, 104-106 bacillus polymyxa per milliliter, 106-108 bacillus lentus per milliliter, 106-109 bacillus coagulans per milliliter, 104-106 enterococcus faecalis per milliliter, 107-109 enterococcus faecium per milliliter, 104-107 candida rugosa per milliliter, 104-107 candida valida per milliliter, 104-106 pseudomonas farinofermentans per milliliter, 106-108 rhodopseudomonas palustris per milliliter, 104-106 geotrichum suaveolens per milliliter, 106-108 aspergillus clavatus per milliliter, 106-108 rough spore aspergillus per milliliter and 106-109 streptomyces globisporus per milliliter. According to the invention, excrements in a poultry house and excrements for accumulative fermentation are treated through a spraying manner, so as to effectively reduce the release amount of malodorous gases, and provide a technical support for the effective treatment of malodor in the livestock and poultry farms and the environmental protection. Besides, the deodorant special for livestock and poultry farms can also be sprayed to the livestock and poultry body surfaces, to keep the livestock and poultry body surfaces clean and sanitary, and be conducive to the growth of livestock and poultry.

The invention discloses an FQ15 enterococcus faecalis and a method of a feed additive which uses the bacteria production for promoting the growth: an MRS culture medium is taken as a seed culture medium, and the FQ15 enterococcus faecalis is cultured under the aerobic or facultative condition at 30 to 45 DEG C for 4 to 24 hours, so as to become a grade one seed; the grade one seed liquid is inoculated in a seed tank for amplification culture, the MRS culture medium is adopted as the seed culture medium, and the culture is carried out for 4 to 24 hours under the aerobic or the facultative condition at 30 to 45 DEG C to become a grade two seed; the grade two seed liquid is inoculated in a fermentation tank for fermentation culture, an improved MRS culture medium is adopted as the fermentation culture medium, and the culture is carried out for 8 to 36 hours by using timing or continuous fed-batch fermentation mode under the aerobic or the facultative condition at 30 to 45 DEG C; the obtained fermentation liquid is sub-packaged or the fermentation liquid which is obtained by step c is separated, 1 to 25 percent drying protector is added in the bacterial sludge, and the granulation at 20 - 80 DEG C, freeze-drying or spray drying are adopted. The invention has the advantages that the invention can substitute the feed antibiotics and improve the high efficient weight increase of livestock and poultry; the production process is simple; the cost is low, etc.

The invention provides a ternary compound inoculant for a fermentation bed for pigs. The ternary compound inoculant is prepared from a compound inoculant I, a compound inoculant II and a compound inoculant III, wherein the compound inoculant I is a starting inoculant and consists of trichoderma koningii, bacillus licheniformis and bacillus amyloliquefaciens; the compound inoculant II is a maintaining inoculant and consists of azotobacter chroococcum, enterococcus faecalis, bacillus laterosporus, bacillus amyloliquefaciens and bacillus subtilis; the compound inoculant III is a stacking inoculant and consists of aspergillus oryzae, streptomycete, azotobacter chroococcum, trichoderma koningii and bacillus licheniformis. The ternary compound inoculant provided by the invention is an efficient conversion flora system with complementary function and complementary enzyme system; the compound inoculant I is fermented to produce heat before entering; the compound inoculant II is subjected to biological deodorization, bacteria inhibition and waste transformation in cultivation; the compound inoculant III is decayed at high temperature after being discharged; nutrients are preserved in situ. The ternary compound inoculant system is collaboratively progressive, a continuous circulating fermentation process for cultivation of the fermentation bed is achieved, and healthy and clean production of pigs is facilitated.

The invention provides a composite active bacterial preparation which is used for aquatic products and has the water improving and fertilizing functions and a preparation method thereof by applying a modern bioengineering technology mainly for the problem that in existing aquaculture, the water quality of a pond is poor. The composite microecological preparation is prepared by mixing bacillus subtilis, bacillus megatherium, bacillus amyloliquefaciens, bacillus licheniformis, enterococcus faecium, lactobacillus brevis, lactobacillus plantarum, lactococcus lactis and saccharomyces cerevisiae through liquid-submerged fermentation. In the liquid preparation, microorganisms are in a dormant state and are stable and easy to preserve, after the preparation is put into water, the dormant strains can quickly resuscitate, harmful substances such as nitrite nitrogen and ammonia nitrogen in the water are quickly decomposed, good algae growth is facilitated, harmful algae reproduction is inhibited, and therefore the purpose of improving the water quality of the culture water is achieved.