3599 results about "Bacteroides species" patented technology

The invention relates to a convenient preparation method for culturing ecological bacteria. The product comprises a composite microbial freeze-drying strain, a special culture medium, a flora coordination and growth promotion factor and the like. After the freeze-drying microbial strains and nutrients are mixed according to the weight ratio of 1:100-1:100000, finished products are obtained by sealing and encapsulating. When in use, the product is added with water with the quantity of 20 times, the mixture is stirred evenly, the environmental temperature is controlled between 15 DEG C and 40 DEG C, and the mixture is covered by a cover, sealed at a dry position and then can be fed after being naturally activated for 2-3 days. The added water is required to be drinking water and does not contain a disinfector, a bactericide, an antibiotic and a synthetic antibacterial agent, and the temperature of the water can not exceed 45 DEG C, warm water with the temperature of 25-37 DEG C is preferred; a used container must be washed and cleaned, is provided with a cover for sealing and can be recycled by disinfection after being used. At present, most of the active bacterium products sold in the market are packaged and delivered to the market after a microbial agent and the products are fermented in a factory, which is a sale-after-growth mode; the defects of unstable effect, unreasonable performance-price ratio and the like generally exist in the active bacterium products produced by this mode. The invention adopts a growth-after-sale mode and hands the production priority of a microbial preparation to a user, and the user can prepare and culture the required ecological bacteria under a simple condition by carrying out water addition, temperature control and natural fermentation on the product. The convenient bacteria do not contain chemical medicaments and toxin and are ecological and environment-friendly.

The invention relates to Bacillus amyloliquefaciens and application thereof on aquiculture. The bacterial strain is separated from the substrate sludge of a polluted brook, is identified as the Bacillus amyloliquefaciens and is collected in Microscobial Culture Collection of China. The bacterial strain can normally grow within the temperature of 20 to 45 DEG C and within the pH value of 5.0 to 10.0; the bacterial strain can reach the fermentation terminal point when being inoculated on a broth culture medium the initial pH value of which is 7.0 according to inoculum concentration of 1:20 and cultured for 18 hours at the speed of 150r.min-1 at the temperature of 39 DEG C. The invention is characterized in that the bacterial strain can enable the content of nitrate nitrogen, nitrite nitrogen, COD and the like in a culture water body to be obviously lowered, has no harm to people and livestock and can be produced on a large scale for improving the aquiculture environment. The Bacillus amyloliquefaciens has obvious degradation function on main pollutants in a simulate culture water body and can be made into a micro-ecology preparation for purifying the culture water body.

The invention discloses a compound bacterium for preventing and treating root-knot nematode and a preparation method thereof. The compound bacterium for preventing and treating root-knot nematode is prepared by the following steps: carrying out high-density cultivation on raw material strains of bacillus thuringiensis, pseudomonas fluorescens, bacillus subtilis, streptomycete, aspergillus niger, paecilomyces lilacinus and fusarium oxysporum, inoculating activated and cultivated strains in a fermentation tank and implementing fermentation and extended cultivation; dehydrating and drying various single strains obtained from extended cultivation to obtain resting microorganism dry powder; and mixing 10-20 parts of bacillus thuringiensis, 5-10 parts of pseudomonas fluorescens, 10-20 parts of bacillus subtilis, 10-20 parts of streptomycete, 10-15 parts of aspergillus niger, 10-25 parts of paecilomyces lilacinus and 8-15 parts of fusarium oxysporum to obtain the compound bacterium for preventing and treating root-knot nematode. The compound bacterium disclosed by the invention is used for preventing and treating root-knot nematode; and compared with an existing product, the compound bacterium is environment-friendly, harmless and non-toxic to a human body and good in control efficiency.

In the invention, a bacillus psychrosaccharolyticus obtained by screening is used for preparing an efficient complex microorganism seaweed fertilizer. The bacillus strain in the invention is named as bacillus psychrosaccharolyticus and preserved in the Common Microorganism Center under China Microorganism Strain Preservation and Management Committee with a preservation number of CGMCC No.4519. The bacillus psychrosaccharolyticus not only has the capacity of carrying out forced degradation on cellulose and starch but also has a wide antimicrobial spectrum; the bacillus psychrosaccharolyticus strain can be compounded with the traditional common strain for bacterial manure; then mixed zymocyte liquids, plant growth factors, immunoregulation factors, active extractives from seaweed, amino acids, organic matters and trace elements are prepared into an efficient complex mircoorganism seaweed fertilizer with an active viable count of 0.2 billion / g to 1 billion / g and an organic matter content of 20-40% according to a certain proportion. The fertilizer has remarkable capacity in combating plant diseases and insect pests and promoting growth. With the fertilizer, the yield of crops can be increased by more than 30%.