Alerta

MICROALGAE USEFUL IN METHODS FOR REDUCING METHANE PRODUCTION

Absstract of: WO2026090537A2

The present disclosure features methods for modulating the production of a small halogenated organic compound from a microalgae, as well as related compositions and methods thereof.

CASCADING FRACTIONAL COMPONENT EXTRACTION FROM MICROALGAE

Absstract of: EP4732673A1

The cascaded extraction of fractional components of an algal biomass includes an initial disruption of an algal cell mass and the centrifugation of the disrupted algal cell mass into each of an oil fraction, an aqueous fraction and a solid fraction. Thereafter, the oil fraction may be purified into an algal oil, while the aqueous fraction may be micro-filtrated and dried into a protein, and the solid fraction may be enzymatically digested, macerated, precipitated and dried into a chitosan.

Filamentous microalgae with rapid ball gathering and settling characteristics as well as screening method and application of filamentous microalgae

Absstract of: CN121931007A

The invention belongs to the technical field of microalgae biology, and particularly discloses filamentous microalgae with rapid ball gathering and settling characteristics as well as a screening method and application of the filamentous microalgae. The preservation number of the strain is CGMCC (China General Microbiological Culture Collection Center) NO. 46950 The invention also discloses a screening method of the algal strain, and the method comprises the following steps: sampling from the surface of water body sediment, applying settling time pressure in a stepped manner, carrying out enrichment culture, and finally obtaining a purified algal strain by combining a single algal filament picking and purifying technology which extends according to the phototropism of filamentous microalgae. The algal strain can spontaneously form dense algal balls in the growth process, sedimentation is completed within a short time (the sedimentation rate reaches 90% within 10 min), and the harvesting cost and energy consumption in the algae culture process are greatly reduced. The algal strain can be used in the fields of sewage treatment, high-value product production, feed, biomass energy and the like, and has a wide market application prospect.

Method for producing recombinant spider silk protein based on microalgae photosynthetic expression and non-chromatographic purification, recombinant spider silk protein and application

Absstract of: CN121931172A

The invention discloses a method for producing recombinant spider silk protein based on microalgae photosynthetic expression and non-chromatographic purification, the recombinant spider silk protein and application, and belongs to the technical field of recombinant spider silk protein production. The method comprises the following steps: designing a target recombinant spider silk protein structure, taking a spider dragline silk protein repetitive unit as a core, matching with an end-side elastin structural domain, inserting an amber termination codon TAG at a specified glycine site of the repetitive unit, and introducing non-natural amino acid containing a click chemical functional group by virtue of a gene codon extension technology; the method comprises the following steps: artificially synthesizing an optimized gene expression cassette, constructing a chlamydomonas reinhardtii expression system, synchronously constructing an unnatural amino acid insertion system, co-transforming the gene expression cassette and the unnatural amino acid insertion system into chlamydomonas reinhardtii, screening positive clones, carrying out photosynthetic culture induced expression, and carrying out pH-induced reversible phase separation in combination with magnetic nanoparticle click chemical non-chromatographic purification. Finally, the high-purity recombinant spider silk protein is prepared, and a technical basis is provided for industrialization of biological materials.

Water quality purification phycomycete composition, water quality purification system and application

Absstract of: CN121930977A

The invention discloses a water quality purification phycomycete composition, a water quality purification system and application, and belongs to the technical field of water treatment and ecological restoration. The phycomycete composition for water quality purification comprises mixed microalgae and a composite flora, the mixed microalgae comprise chlorella sorojin, chlorella vulgaris, chlorella pyrenoidosa, chlamydomonas reinhardtii and chlamydomonas plana; the composite flora comprises bread yeast, bacillus subtilis, bacillus amyloliquefaciens, bacillus licheniformis and pseudomonas putida. According to the invention, dominant algae species in an in-situ water body and external composite flora are combined as a water quality purification phycomycete composition, so that not only is the removal efficiency of nutritive salt improved, but also the increase of microalgae biomass is promoted by improving the phycomycete microbial environment and adjusting the ecological structure. The phycomycete composition disclosed by the invention can be directly used for in-situ treatment of rivers in cold regions, is directly arranged in rivers, bank zones or constructed wetlands, and overcomes the defect that a traditional process is difficult to efficiently and stably operate in treatment of rivers in cold regions.

Microbial agent for improving content of milk nervonic acid and preparation method thereof

Absstract of: CN121930971A

The invention particularly relates to a microbial agent for increasing the content of nervonic acid in milk and a preparation method thereof, the microbial agent comprises functional microbial thalli and a composite protective agent, the functional microbial thalli are microorganisms capable of synthesizing nervonic acid or a direct precursor thereof, are selected from natural isolated strains or genetic engineering modified strains, and cover saccharomycetes, bacteria, microalgae or fungi; the composite protective agent takes feed-grade lactose as a matrix and contains skim milk powder and glutamic acid, and the composite protective agent comprises the following components in percentage by weight: 75-85% of feed-grade lactose, 10-20% of skim milk powder and 3-7% of glutamic acid. The mixing mass ratio of the composite protective agent to the functional microorganism thalli is 1: (0.8-1.2); and the survival rate of functional microorganisms stored at normal temperature for 12 months is greater than or equal to 80%. After mammals are continuously fed with the microbial inoculum for 4 weeks, the nervonic acid content in milk is increased by 3-5 times compared with a control group, the DHA content is not obviously changed, the total fatty acid content is stable, and the directional enrichment effect of nervonic acid is clear and is not a passive result of increase of the total fatty acid content.

Microalgae seed bottle placing platform

Absstract of: CN224172735U

The utility model relates to the technical field of biological experiment equipment, and discloses a microalgae seed bottle placing platform which comprises a bottom shell, an inclined mechanism is arranged in the bottom shell, the inclined mechanism comprises a supporting plate, and a rotating rod is rotationally installed on the inner wall of the supporting plate. According to the microalgae seed bottle placement platform, a first motor operates to drive a connecting shaft to rotate so as to drive a second bevel gear to rotate, the second bevel gear drives a first bevel gear to rotate, the first bevel gear drives a fixed rod to rotate so as to drive a worm to rotate, and the worm rotates to drive a worm gear to rotate so as to drive a rotating rod to rotate; the rotating rod drives the angle of the connecting plate to be adjusted so as to drive the connecting shell to incline, through the arrangement of the structure, different inclination angles needed by the algae seed bottle can be effectively adjusted, the algae seed bottle can be fixed to prevent the algae seed bottle from toppling over due to collision, and the problems proposed in the background technology are solved.

Immobilized microalgae purification mariculture tail water treatment system

Absstract of: CN121929876A

The invention discloses an immobilized microalgae purification mariculture tail water treatment system, which relates to the technical field of mariculture tail water treatment, and comprises a pretreatment unit, a core photo-biological purification unit and a deep treatment unit, the high-tolerance microalgae subjected to gradient domestication are embedded in the magnetic nanoparticle modified high polymer material, the formed magnetic immobilized microalgae complex is high in mechanical strength and excellent in settling performance, online recovery and backflow of lost microalgae can be achieved by combining a magnetic separation and recovery device, the operation cost is greatly reduced, secondary pollution is avoided, and the method is suitable for industrial production. A hollow optical fiber light guide aeration assembly with light-transmitting micropores is adopted, sunlight is accurately guided into the deep layer of the tail water, and meanwhile, microbubbles escape from the optical fiber micropores to form light-gas coaxial release, so that the technical bottlenecks of insufficient illumination and low mass transfer efficiency of the deep water body are effectively solved; in addition, the pretreatment unit adopts a nitrifying flora-loaded modified charcoal adsorption bed, so that a high-quality nitrogen source is provided for subsequent microalgae, and the starting time of the system is remarkably shortened.

Microalgae biofilm carrier with conductive coating as well as preparation method and application of microalgae biofilm carrier

Absstract of: CN121931093A

The invention discloses a microalgae biofilm carrier with a conductive coating as well as a preparation method and application of the microalgae biofilm carrier, and relates to the field of efficient culture of microalgae and resource treatment of wastewater. The microalgae biofilm carrier comprises a surface tension regulator modified substrate and a conductive active layer loaded on the surface of the substrate, and the conductive active layer comprises defect type UiO-66 (Zr)-NH2, a conductive agent and a surface tension regulator. The microalgae biofilm carrier has stronger surface tension, is more beneficial to attachment of microalgae organisms, can improve the extracellular electron transfer efficiency of the microalgae and the photosynthesis rate of the microalgae, and promotes rapid formation of the microalgae biofilm.

Eel feed using schizochytrium microalgae and method for producing same

Absstract of: CN121941418A

The present invention relates to a feed composition for eels, the composition comprising a biomass derived from microalgae of the genus Schizochytrium, and a method for culturing eels using the composition. When an eel feed composition containing a biomass derived from a microalgae belonging to the genus Schizochytrium is supplied to an eel, the growth of the eel is promoted, and thus the biomass can be advantageously used as a feed composition or a feed additive for the eel.

Photobioreactor for microalgae cultivation

Absstract of: KR20260056673A

본 발명은 미세조류 배양용 광생물 반응기에 관한 것으로서, 더욱 상세하게는 배양공간으로 유입되는 기체에 와류를 발생시켜 미세조류를 순환시킴으로써 미세조류의 배양효율을 향상시킬 수 있는 미세조류 배양용 광생물 반응기에 관한 것이다. 본 발명은 배양공간 내의 배양액과 배양액 내의 미세조류에 상승류 및 와류를 발생 및 배양공간 내에서 순환시킴으로써, 배양액 및 미세조류가 이산화탄소가스와 태양광을 균일하게 공급받을 수 있도록 하여 배양효율을 향상시킬 수 있다. 또한, 본 발명은 주기적 또는 비주기적으로 배양액 내의 상승류 및 와류 형태를 변화시켜 미세조류가 일정 부분에서 체류하는 것을 방지 및 서로 뭉치지 않고 분산된 형태로 순환되게 함으로써 이산화탄소가스 및 태양광을 균일하게 공급받을 수 있도록 하여 배양효율을 향상시킬수 있다.

Method for industrially and stably producing golden spirulina

Absstract of: CN121914900A

The invention discloses a method for industrially and stably producing golden spirulina, and belongs to the technical field of microalgae biology. The method comprises the following steps: preparing a culture solution special for golden spirulina, inoculating spirulina into the culture solution special for golden spirulina for culture, performing partial harvesting when the harvesting standard is reached, then calculating the nitrogen source supplementing amount according to the wet weight of the harvested spirulina and the total sugar content obtained by detection, and supplementing a nitrogen source. And continuously culturing under the same culture condition, partially harvesting when the harvesting standard is reached, calculating the nitrogen source supplementing amount by adopting the same method as the previous method, supplementing the nitrogen source, repeating the steps, and drying the harvested spirulina in time to obtain the golden spirulina powder. The method has the advantages that the produced golden spirulina is light in fishy smell and easy to accept by consumers, the content of functional alpha-glucan is high, and the method has very important significance on production and application of spirulina alpha-glucan.

Haematococcus pluvialis intelligent culture system and method for resource utilization of waste biogas slurry

Absstract of: CN121914846A

The invention relates to the technical field of microalgae culture, in particular to an intelligent haematococcus pluvialis culture system and method for waste biogas slurry resource utilization, and the system comprises a biogas slurry collection module which is used for collecting waste biogas slurry; the biogas slurry treatment and culture medium preparation module is used for carrying out treatment and nutrition blending on waste biogas slurry to prepare a culture medium special for haematococcus pluvialis; the modular culture unit is used for bearing a special culture medium and culturing haematococcus pluvialis for green growth of algae cells; the intelligent control module is used for receiving real-time monitoring data in the breeding process and dynamically optimizing key parameters such as illumination, temperature, pH, gas flow and nutrition supply through a self-adaptive algorithm; the induction harvesting module is used for applying multiple stress to the high-density algae liquid to induce astaxanthin accumulation, and algae mud is collected through a secondary harvesting system. Therefore, the problems of high production cost, low culture efficiency and the like in the prior art are solved.

Aldehyde cationic starch as well as preparation method and application thereof in microalgae flocculation

Absstract of: CN121914298A

The invention discloses aldehyde cationic starch, a preparation method thereof and application of the aldehyde cationic starch in microalgae flocculation, and belongs to the technical field of water treatment and biomass resource utilization. Natural starch is subjected to cationization modification, aldehyde functional groups are further introduced, and the aldehyde cationic starch is prepared; and adding the obtained aldehyde cationic starch serving as a flocculating agent into a water body containing microalgae, and realizing rapid aggregation and settling separation of the microalgae under stirring and standing conditions. By utilizing the electrostatic neutralization effect of cationic groups and the chemical crosslinking/hydrogen bond synergistic effect of aldehyde functional groups, the aldehyde cationic starch remarkably improves the flocculation rate and removal efficiency of microalgae, has biodegradability and environmental friendliness, and is suitable for the scenes of microalgae biomass collection, algae wastewater treatment and the like.

FOOD COMPOSITION

Absstract of: WO2026082581A1

The present invention relates to a food composition comprising (a) microalgal biomass material, said biomass material comprising at least 5 wt% of microalgal protein by weight of dry matter of the microalgal biomass, wherein the microalgal biomass material is in the form of non-lysed single cells and/or clusters of non-lysed single cells, with a particle size (D4,3) of 2 µm to 100µm, as measured upon redispersion in an aqueous medium at a concentration of 3 wt-% of microalgal biomass material by total weight of the aqueous medium and the microalgal biomass; and (b) a creamer system, comprising a lipid, a carbohydrate carrier; and optionally an emulsifier.

A METHOD FOR PREPARING AND SELECTING A POLYMERIC FLOCCULANT FOR USE IN HARVESTING MICROALGAE

Nº publicación: US20260109936A1 23/04/2026

Applicant:

UNIV OF TECHNOLOGY SYDNEY [AU]

Absstract of: US20260109936A1

The present invention relates to a method for harvesting microalgae, the method comprising (i) mixing one or more monomers, a photoinitiator, water and a deoxygenation system to form a mixture; (ii) exposing the mixture to UV light so as to form an aqueous solution of one or more polymers; (iii) introducing the aqueous solution of one or more polymers to a suspension comprising microalgae in an amount sufficient to produce flocculated microalgae; and (iv) harvesting the flocculated microalgae. The present invention also relates to a method for preparing and selecting a polymeric flocculant for use in harvesting microalgae and a related apparatus.