6 results about "Chaetoceros" patented technology

The present invention relates to the technical field of oyster aquaculture, and discloses a method for improving the survival rate of Hong Kong giant oysters under high-salinity conditions, comprising S1, preparing a bait culture solution and a mother liquor; S2, culturing Chaetoceros muelleri as bait for Hong Kong giant oysters. The present invention provides a new means for solving the problem of the survival rate of Hong Kong giant oysters in a high-salinity environment, and is helpful for coping with the drastic fluctuation of salinity during aquaculture. By feeding with bait rich in betaine, the survival rate of Hong Kong giant oysters under 35 salinity conditions is significantly improved. At the same time, in view of the fact that Hong Kong giant oysters have the characteristics of low-salinity tolerance but weak high-salinity tolerance, the present invention aims to improve their adaptability to high-salinity environments. To achieve this goal, by feeding bait that absorbs betaine, Hong Kong giant oysters indirectly absorb betaine, thereby enhancing their high-salinity tolerance, and the survival rate of Hong Kong giant oysters is increased by 50% compared with before.

The invention provides a breeding method of coelomactra antiquata juvenile shellfish, and belongs to the technical field of shellfish breeding. In the breeding process of the coelomactra antiquata juvenile mollusk, the water temperature is kept to be 25-27 DEG C, the salinity is kept to be 26-28, and the coelomactra antiquata juvenile mollusk is fed with mixed live algae containing chlorella, chaetoceros mulleri, coelomactra zhanjiangensis and tetraselmis subcordiformis, so that the growth of the coelomactra antiquata juvenile mollusk can be promoted. According to the method, the composite probiotic liquid formed by combining bacillus subtilis, photosynthetic bacteria and lactic acid bacteria according to the specific proportion is sprayed every 5-10 days, accumulation of hydrogen sulfide and ammonia nitrogen in the substrate can be reduced, and water quality is purified. By means of the breeding method, the survival rate and the weight growth rate of the coelomactra antiquata juvenile mollusks can be effectively increased, the proportion of the coelomactra antiquata with the shell length larger than or equal to 4 cm can be effectively increased, and therefore the yield and quality of the coelomactra antiquata juvenile mollusks are improved.

This invention belongs to the field of biocontrol microbial technology, specifically relating to a strain of Chaetomium globosum (… Chaetomium globosum )5141-4 、 Inoculants and their applications. This invention isolates an endophytic fungus from *Lithocarpus* lichens and names it *Chaetoceros globosa*. Chaetomium globosum 5141-4. Verification has shown that the above strains can effectively inhibit the growth of Fusarium oxysporum or anthrax, and also exhibit good inhibitory effects against six pathogens, including Pseudomonas aeruginosa and Enterococcus faecalis. They hold promise for use in the preparation of biocontrol products or further screening of antibacterial compounds.

This invention discloses a symbiotic system of *Algae monostellatum* and *Chaetomium globosum*, its construction method, and its application. This invention successfully constructed *Algae monostellatum* (…) using BG11 inorganic salt medium. Coelastrella sp.) and Chaetoceros (sp.) and Chaetoceros globulus ( Chaetomium globosum This multifunctional symbiotic organism promotes crop growth, alleviates crop salt stress, degrades straw, and inhibits Fusarium graminearum. Furthermore, both Chaetomium globosum and Algae moniliforme within the symbiotic organism can colonize around the crop root system. This fungal-algae symbiotic not only maximizes resource utilization but also provides strong support for the green and healthy development of agriculture.

The invention discloses a chaetomium globosum strain DP14 and an application of the chaetomium globosum strain DP14. The chaetomium globosum DP14 provided by the invention is preserved in the China Center for Type Culture Collection on June 10, 2025, and the preservation number of the chaetomium globosum DP14 is CCTCC (China Center for Type Culture Collection) NO: 20251324. The fermentation extract of the DP14 provided by the invention shows remarkable inhibitory activity on various plant pathogenic bacteria and fungi, and especially has a prominent inhibitory effect on pathogenic bacteria such as bacillus subtilis, magnaporthe grisea and cryptothecium elaticum. In addition, a fermentation product of the strain also has excellent oxidation resistance. The chaetomium globosum strain enriches chaetomium globosum resources, metabolites of the chaetomium globosum strain can be used for developing broad-spectrum and efficient biopesticides or antibacterial agents, and the chaetomium globosum strain is suitable for green prevention and control of plant diseases.

The invention discloses a method for preparing nano cellulose, and belongs to the technical field of biomass-based nano material preparation. The preparation method comprises the following steps: reacting strong chaetoceros with a sodium hydroxide solution at 80-110 DEG C for 100 minutes, cooling the reaction solution to room temperature, adding a hydrogen peroxide solution to react at 80 DEG C for 30 minutes, cooling the reaction solution to room temperature, performing post-treatment to obtain strong chaetoceros cellulose, dispersing the strong chaetoceros cellulose in a 57% sulfuric acid solution, performing acidolysis at 40 DEG C for 45 minutes, and performing filtration to obtain the strong chaetoceros cellulose. And carrying out post-treatment to obtain the nano cellulose. The method disclosed by the invention has the beneficial effects that the nano cellulose with high length-diameter ratio and high crystallinity is prepared by taking waste green tide algae, namely chaetoceros, as a raw material and utilizing the characteristics of almost no lignin and slender fibers of the waste green tide algae, and a relatively mild and simple method, so that a new idea is provided for the preparation of the nano cellulose; the method has important significance on innovative development and utilization of algae waste.