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151
resultados
Última actualización
14/08/2025 [07:29:00]
Resultados 75 a 100 de 151
Resumen de: CN120041534A
The invention discloses a method for evaluating toxicity of organic pollutants to marine organisms, and belongs to the technical field of pollutant toxicity evaluation. According to the method for evaluating the toxicity of the organic pollutants to the marine organisms, three microalgae are adopted as biological models, the average toxicity value is obtained by integrating the growth dose-effect relationship of the three microalgae to evaluate the toxicity of the organic pollutants to be detected, and compared with single microalgae, the toxicity grade of the organic pollutants can be more comprehensively and effectively reflected; besides, non-linear least square fitting is carried out on concentration-inhibition rate data through two two-parameter non-linear functions Weibull and Logit, an optimal fitting function is judged according to a correction determination coefficient (R2adj) and an average absolute error (MAE), and the obtained half-inhibition concentration is more accurate. Therefore, the method provided by the invention is more real, comprehensive and accurate, and has important application value in the evaluation of the toxicity of the organic pollutants to the marine organisms.
Resumen de: CN120051557A
The Schizochytrium sp. Strain of the present invention is a high bio-oil-producing microalgae containing a high concentration of DHA, has high bio-oil productivity due to the high crude fat content in the produced biomass, and has the characteristic of containing a high content of docosahexaenoic acid in cells. Thus, the strain itself, biomass produced by culturing and fermenting the strain, and concentrates and extracts thereof can be advantageously used as a feed composition or a food composition.
Resumen de: CN120041432A
The invention discloses a bacterium-alga co-immobilized material and application thereof in red tide treatment of prorocentrum donghaiense, and belongs to the field of microorganisms for harmful red tide treatment. According to the invention, alteromonas algicidal bacteria and autotrophic non-red-tide microalgae Tetraselmis are co-immobilized on the same carrier in an adsorption manner to form a bacteria-algae co-immobilized material. The bacterium-algae co-immobilization material has high algae-lysing performance on prorocentrum donghaiense red tide, the algae-lysing rate is 100% within 36 hours, and the algae-lysing rate is 84.07% after the bacterium-algae co-immobilization material is repeatedly used for four times. The bacteria-algae co-immobilized material has the characteristics of no toxicity, strong water absorption, high stability, reusability and the like, and can be effectively used for treating harmful algal blooms of red tide algae such as prorocentrum donghaiense.
Resumen de: ES3020982A1
Method for the conservation of microalgal strains in a semi-solid medium. The present invention relates to a method for the medium- to long-term conservation of microalgal strains in a semi-solid medium. Advantageously, the method of the invention comprises carrying out the following steps: (a) providing a first culture vessel, where said vessel contains a semi-solid microalgal culture medium comprising an agar concentration between 0.1-1.0% v/v; (b) depositing a microalgal strain on the semi-solid microalgal culture medium; and (c) incubating the microalgal strain deposited on the semi-solid microalgal culture medium at a temperature between 15-30 ° C and under incident irradiation of {IMAGE-01} with a photoperiod of between 16:8 to 8:16 (light:dark) for a time between 7-30 days. (Machine-translation by Google Translate, not legally binding)
Resumen de: CN120021775A
The invention discloses a method for embedding microalgae oil by taking a starch base as a wall material. The method comprises the following steps: weighing starch sodium octenylsuccinate, slowly adding the starch sodium octenylsuccinate into single distilled water, heating and stirring until the starch sodium octenylsuccinate is completely dissolved to obtain a water-phase solution; the preparation method comprises the following steps: weighing algae oil of micrococcus, absolute ethyl alcohol and fatty acid monoglyceride, mixing and stirring to obtain an oil phase solution; stirring the water phase solution under the condition that the speed is 10000 to 12000 r/min, then slowly adding the oil phase solution into the water phase solution, and then continuously stirring for 10 to 20 minutes to obtain an emulsion; freezing the emulsion at-80 DEG C for 12 hours, then carrying out vacuum freeze drying for 72 hours, then crushing to obtain microcapsule powder coated with micrococcus oil, and sealing and storing the microcapsule powder. According to the method, active substances of the micrococcus faecalis oil are not damaged, the embedding rate is good, a high-temperature environment is not used in the production process, operation is easy, and the method is suitable for large-scale processing and production.
Resumen de: CN120022953A
The invention belongs to the technical field of CO2 capture and utilization, and particularly relates to a photocatalytic porous skeleton for microalgae carbon sequestration and a preparation method and application thereof. The photocatalytic porous skeleton comprises a porous skeleton, and a carbon black layer, a carbon nanotube layer and a photocatalyst layer which are sequentially arranged on the porous skeleton, the porous framework is made of polyurethane sponge; the photocatalyst is g-C3N4/TiO2 (titanium dioxide). The photocatalytic porous skeleton prepared by the invention can obviously enhance the carbon sequestration effect of photosynthesis of microalgae, can double the CO2 removal rate of a column type microalgae photobioreactor with the capacity of 100L, and can convert captured CO2 into organic matters.
Resumen de: CN120026077A
The invention discloses a drilling fluid biotoxicity evaluation method based on microalgae rapid chlorophyll fluorescence, and relates to the technical field of drilling fluid biotoxicity evaluation methods, the drilling fluid biotoxicity evaluation method comprises the following steps: S1, culturing microalgae in a photobioreactor, and activating and culturing the microalgae as a seed solution for later use; s2, taking the waste drilling fluid with different concentration gradients as experimental group culture conditions, setting a control group, and inoculating the control group into a photobioreactor filled with the seed solution for culture to obtain a culture system; s3, measuring Fv/Fm in rapid chlorophyll fluorescence parameters of the culture system; s4, calculating the inhibition ratio of the waste drilling fluid to the microalgae; s5, screening and determining the time required by the evaluation method; s6, EC50 of the concentrated control substance and EC50 of the waste drilling fluid are obtained according to the required time of the evaluation method, Fv/Fm in rapid chlorophyll fluorescence parameters is used as a detection index, the inhibition condition of microalgae can be more accurately represented, and the evaluation period is shortened.
Resumen de: US2025162956A1
The present invention comprises methods and compositions comprising a microalgae consortium. A composition comprises at least one genera of microalgae flocculated by Paenibacillus polymyxa strain, Strain 2, deposited under the Budapest Treaty as ATCC Accession No. PTA-12841. Methods of treating the soil comprise adding a composition of the present invention to soil.
Resumen de: US2025161385A1
A feed additive for farm animals and poultry is provided, including biomass and/or cultural liquid of the microalgae Chlorella vulgaris together with chlorellin in a titer of 108-1014 CFU per 1 ml of cultural liquid and/or biomass. Related methods are also provided.
Resumen de: KR20220152129A
The present invention provides an environmentally friendly water treatment method for treating polluted water including reverse osmosis concentrated water containing high nutrients, ions and metal elements through Chlorella spp. and Desmodesmus spp. that consume large amounts of nutrients very efficiently and grow rapidly under various sewage conditions, and at the same time manufacturing biofuel.
Resumen de: CN120000623A
The invention discloses a multifunctional microneedle patch as well as a preparation method and application thereof, and belongs to the technical field of pharmaceutical preparations. The multifunctional microneedle patch comprises a substrate layer and a microneedle array, the microneedle array is arranged on the substrate layer, the microneedle array is loaded with microalgae exosomes and copper sulfide nanoparticles, the hydrogel material is used for encapsulating the microalgae exosomes and the copper sulfide nanoparticles to prepare the microneedle patch, and the microneedle patch has the advantages that the microneedle patch is used for preparing the microneedle patch; the microalgae exosome has a treatment effect of repairing radiation injury, the copper sulfide nanoparticles have a photoresponsive anti-infection effect, and the microneedle structure has the advantages of minimally invasive, painless and slow release of drugs, so that local surface and deep tissues maintain ideal drug concentration in a certain period of time. The multifunctional microneedle patch disclosed by the invention has good biocompatibility, is simple and feasible in preparation process, is easy to store and use, and has a wide application prospect in the field of radioactive injury.
Resumen de: CN120000611A
The invention discloses a microalgae exosome nano-particle for targeting liver cancer tissue and a preparation method thereof, and belongs to the technical field of biomedical materials, the method comprises the following steps: (1) preparing a microalgae cell exosome by combining an ultracentrifugation method, an ultrafiltration method and a size exclusion method, microalgae cells being chlorella cells or synechocystis cells, and the particle size of the microalgae cell exosome being 30-150nm; and (2) loading an immune checkpoint inhibitor into the microalgae cell exosome by an electroporation method to obtain a drug-loaded microalgae exosome, and carrying out membrane fusion on a liver tumor cell membrane and the drug-loaded microalgae exosome to prepare the microalgae exosome nanoparticles targeting the liver cancer tissue. The prepared microalgae exosome nanoparticles have the advantages of good liver cancer tissue targeting property, good biological safety and exact and accurate drug curative effect, and have wide application prospects in tumor treatment.
Resumen de: CN120005729A
The invention relates to the technical field of plant preservation, and discloses a method for preserving microalgae plants. The invention aims to improve the existing microalgae plant preservation method, especially the preservation method for bait microalgae, so as to solve the problems that the existing microalgae preservation time is short, nutritional ingredients are lost after preservation, the activity is reduced and the like. According to the microalgae preservation method, choline chloride is added to maintain the balance of a carbon source and a nitrogen source in a culture medium, nickel salt is added to promote the activity of algae photosynthetic pigments in a stable period, and the purpose of prolonging the preservation time and activity of algae is achieved. The microalgae preserved by the method disclosed by the invention can be preserved for a longer time on the premise of the same activity, and has higher activity on the premise of the same preservation time, and the activity of the microalgae preserved by the method is several times of that of microalgae preserved by a conventional method. The microalgae plant preservation method does not use toxic and expensive reagents, is environment-friendly, and can greatly promote the popularization and application of the microalgae industry.
Resumen de: CN222877916U
The utility model discloses a microalgae culture device for strong light, which belongs to the technical field of microalgae biology and comprises a light source system and a microalgae culture system, the light source system comprises a high-power LED lamp, a condenser, a light guide optical fiber and a light guide plate, and the high-power LED lamp converges light through the condenser and transmits the light to the light guide plate through the light guide optical fiber; and the light guide plate is arranged in the microalgae culture system. Microalgae liquid is placed in the cultivation device, the light source system provides strong light for the cultivation device, the high-power LED lamp gathers light through the condenser and transmits the light to the light guide plate through the light guide optical fiber, the light guide plate evenly disperses the light, light and heat are separated, only light is guided into the cultivation system, and the trouble of too high temperature is avoided. The device disclosed by the utility model can meet the production and application requirements of strong-light microalgae.
Resumen de: CN222877925U
The utility model discloses a floating algae culture device, which belongs to the technical field of microalgae biology and comprises a floating component floating on a water body, a microalgae fixing part used for fixing microalgae is arranged in the floating component, a feed port is arranged on one side of the floating component and connected with a feed pump through a feed pipe, and a discharge port is arranged on the other side of the floating component and connected with the feed pump through a discharge pipe. The discharging port is connected with a discharging pipe, and a transparent protective film is arranged above the floating assembly. The floating assembly is placed in a water body, microalgae are attached to the microalgae fixing piece before production, then the feeding pump is started, waste water rich in nitrogen and phosphorus enters the floating assembly sequentially through the feeding pump, the feeding pipe and the feeding port, and the waste water is discharged back to the water body again through the discharging port and the discharging pipe after passing through the microalgae fixing piece attached with the microalgae. Nitrogen and phosphorus in the wastewater are absorbed by the microalgae, so that the production requirements of the microalgae can be met, and the wastewater can be treated; the device has the advantages that the occupied area is not wasted, the equipment investment is reduced and the like.
Resumen de: CN120004656A
The invention relates to the technical field of microbial fertilizers, in particular to a microalgae biological fertilizer and a preparation method and application thereof, and the method comprises the following steps: step 1, algae liquid inoculation, step 2, graded propagation cultivation, step 3, algae cell screening, step 4, compounding and mixing, and step 5, finished product preparation. According to the invention, the microalgae such as the terriella variabilis, the small monofidus algae and the chlorella pyrenoidosa are adopted and combined with the microalgae biological fertilizer prepared by the preparation method disclosed by the invention, so that the competition of the microalgae for nutrients can be reduced, meanwhile, the nutrients can be better produced, and the growth of crops is facilitated.
Resumen de: CN222877929U
The utility model relates to the technical field of marine microalgae culture, and discloses a marine microalgae culture device which comprises an S-shaped culture tube, the S-shaped culture tube is arranged in an S shape, and the two ends of the S-shaped culture tube are open. By arranging the S-shaped culture tube, the S-shaped culture tube can be used for culturing marine microalgae, meanwhile, the S-shaped culture tube is of an S-shaped design, openings in the two ends of the S-shaped culture tube can be used for adding sterilized seawater, releasing algae species, inflating oxygen and the like, cultured bait can be discharged through the arrangement of the discharge port, and algae which sink to the bottom and die can be cleaned in time; the cover body can seal the discharge port, cultured baits or algae which are cleaned to be dead at the bottom can directly fall into the material bearing box at the bottom after being discharged from the discharge port, after the materials are collected by the material bearing box, the buckle is pushed open by a hand, the clamping state of the buckle and the material bearing box is relieved, and therefore the material bearing box can be pulled out from the bottom of the S-shaped culture tube, and the culture tube can be conveniently and rapidly taken out from the bottom of the S-shaped culture tube. And the device is convenient to clean.
Resumen de: WO2025100941A1
The present invention provides Dunaliella salina microalgae having the ability to produce beta-carotene at a NaCl concentration of 0.1M or less. In addition, the present invention provides a method for producing beta-carotene, comprising a step of culturing the Dunaliella salina microalgae.
Resumen de: WO2025101437A1
In an aspect, the disclosure provides methods for making LC-PUFA and VLCFAs in a host organism. The LC-PUFA and VLCFAs can be new chemical entities, well-known LC-PUFA, and derivatives of LC-PUFA as well as VLCFAs. The host cells can be microalgae, fungi or other host cells. In a related aspect, the disclosure provides host cells engineered to have biochemical pathways for making LC-PUFA and VLCFAs.
Resumen de: WO2024008896A1
The present invention relates to an engineered unicellular Stramenopile microalga comprising a loss of function of the homologous Seipin gene, an in vitro method of producing triacylglycerols (TAG), and uses thereof.
Resumen de: EP4553150A1
The present invention relates to a cell culture composition containing an extract from microalgae of the Thraustochytrid family. It has been found that when muscle cells are cultured in a medium containing an extract derived from the biomass of microalgae belonging to the Thraustochytrid family according to the present disclosure, the proliferative capacity of muscle cells is enhanced. Therefore, the cell culture composition including the microalgae extract can be used as a substitute for fetal bovine serum among the components of cell culture media.
Resumen de: CN222861292U
The utility model relates to the technical field of sewage treatment, in particular to a multi-stage ecological pig raising wastewater treatment system, which comprises an anaerobic baffled reactor, an anaerobic baffled reactor, an anaerobic baffled reactor and an anaerobic baffled reactor, a plurality of partition walls are arranged in the anaerobic baffled reaction tank and are divided into a plurality of independent anaerobic baffled reaction chambers, water passing pipes are arranged at the upper parts of the partition walls, and sewage sequentially flows among the anaerobic baffled reaction chambers through the water passing pipes; mud guide inclined walls are arranged on two sides of the bottom of the anaerobic baffling reaction tank; a settling mud inclined wall is arranged below the water outlet of the anaerobic baffling reaction tank; the multi-stage reverse-flow anaerobic biological filtration unit is communicated with the anaerobic baffling reaction tank; comprising a plurality of filter chambers filled with filler, and the filter chambers are sequentially communicated through water passing holes which are formed in a high-low staggered manner; the aerobic ecological purification system comprises a middle water tank, and part of effluent of the middle water tank flows back to the anaerobic baffled reactor and the microalgae purification tank. The device is friendly to ecological environment, low in energy consumption, small in dosage, low in operation cost and simp
Resumen de: CN119979332A
The invention belongs to the technical field of microalgae culture, and particularly provides a haematococcus pluvialis culture medium and a preparation method thereof.The haematococcus pluvialis culture medium is prepared from 1-3 mg/L of sodium acetate, 0.01-1 mg/L of cobalt nitrate hexahydrate, 0.01-1.6 mg/L of copper sulfate, 0.1-1.2 mg/L of zinc sulfate heptahydrate, 1-3 mg/L of manganese chloride tetrahydrate, 1-10 mg/L of boric acid, 1-30 mg/L of sodium carbonate, 1100-1500 mg/L of sodium nitrate, 0.01-6 mg/L of EDTA, 20-50 mg/L of calcium chloride, 70-100 mg/L of magnesium sulfate heptahydrate, 40-100 mg/L of monopotassium phosphate trihydrate and 0.02 g of inorganic phosphorus; the method comprises the following specific steps: S1, culturing haematococcus pluvialis to a stable phase by a conventional method, inoculating haematococcus pluvialis species into a haematococcus pluvialis culture medium, and culturing; s2, shaking table; s3, culturing for 45 hours; s4, inoculating the seed solution into a haematococcus pluvialis culture medium, and continuously culturing in the shaking table for 6-15 days; the culture medium disclosed by the invention has a good promotion effect on the growth of haematococcus pluvialis and the accumulation of astaxanthin.
Resumen de: KR20250066401A
본 발명은 0.1M 이하의 NaCl 농도에서 베타카로틴 생산 능력을 갖는, 두날리엘라 살리나(Dunaliella salina) 미세조류를 제공한다. 또한 본 발명은 상기 두날리엘라 살리나 미세조류를 배양하는 단계를 포함하는, 베타카로틴 생산방법을 제공한다.
Nº publicación: CN119979626A 13/05/2025
Solicitante:
CHINA THREE GORGES UNIV
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Resumen de: CN119979626A
The invention discloses a method for assisting microalgae oil production by nitrogen-fixing bacteria and treating fermentation waste gas at the same time. The method comprises two stages of microalgae breeding and co-culture oil production. In the breeding stage, the microalgae take CO2 in fermentation waste gas which is not pretreated as a carbon source, and high-density culture is realized in a nitrogen-containing culture medium. When the nitrogen source in the culture medium is consumed, inoculating multifunctional nitrogen-fixing bacteria into a culture system and co-culturing with the microalgae. Nitrogen in the fermentation waste gas is converted into a nitrogen source of the microalgae under the action of nitrogen-fixing bacteria, so that the concentration of the low nitrogen source is maintained to promote the microalgae to produce oil, and secretions mainly comprising extracellular polymeric substances and volatile organic compounds derived from the fermentation waste gas, which are generated by microalgae culture, are decomposed. Effective treatment of fermentation waste gas and high-density culture of microalgae are achieved, the oil content of the microalgae is increased, culture water can be repeatedly used by reducing the content of residual organic matter and total nitrogen, the problem that the amount of microalgae culture wastewater is large is solved, and good environmental benefits and application prospects are achieved.
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