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METHODS FOR CULTIVATING CYANOBACTERIA

Absstract of: JP2025093262A

To provide methods for culturing cyanobacteria.SOLUTION: A method for cultivating cyanobacteria includes: providing the cyanobacteria; subjecting the cyanobacteria to physical mutagenesis, so as to obtain primary mutant cyanobacteria; subjecting the primary mutant cyanobacteria to chemical mutagenesis, so as to obtain secondary mutant cyanobacteria; and subjecting the secondary mutant cyanobacteria to a temperature resistance test and an environment resistance test, so as to obtain target cyanobacteria, where the lethal rate of the physical mutagenesis ranges between 50% and 80%, and the lethal rate of the chemical mutagenesis ranges between 40% and 55%.SELECTED DRAWING: Figure 1

A composition for improving preventing and treating of liver cancer comprising microalgae extract

Absstract of: KR20250090554A

본 발명은 미세조류 추출물을 유효성분으로 함유하는 간암의 개선, 예방 또는 치료용 조성물에 관한 것으로, 보다 상세하게는 미세조류 추출물을 유효성분으로 포함함으로써, 간암을 개선, 예방 또는 치료할 수 있으므로, 식품 조성물, 나아가 건강기능식품 또는 약학 조성물로 활용될 수 있다.

Method for determining and evaluating influence of phycosphere microenvironment on conjugational transfer capability of ARGs

Absstract of: CN120174056A

The invention discloses a method for determining and evaluating the influence of an algal microenvironment on the conjugational transfer capability of ARGs. Comprising the following steps: preparing donor bacteria, recipient bacteria and an algae solution, evaluating the influence of the density of microalgae in the interalgal microenvironment on the conjugational metastasis of ARGs, evaluating the influence of the number of binding-state bacteria in the interalgal microenvironment on the conjugational metastasis of ARGs, evaluating the influence of the EPS content in the interalgal microenvironment on the conjugational metastasis of ARGs, and evaluating the influence of the EPS component in the interalgal microenvironment on the conjugational metastasis of ARGs. According to the method, macroscopic and microscopic processes of microalgae in a water body are considered, the influence on the conjugational transfer capability of the antibiotic resistance genes of the drug-resistant bacteria in the interalgal microenvironment can be systematically and comprehensively evaluated, and the determination method can provide powerful theoretical basis and support for behavior research and use management of the antibiotic resistance genes in the water environment.

AI-driven efficient microalgae photobioreactor system

Absstract of: CN120173701A

The invention discloses an AI-driven high-efficiency microalgae photobioreactor system which comprises a photobioreactor body used for containing algae liquid and providing a growth environment and space for microalgae, and the photobioreactor body comprises a light guide plate light source array, an air supply aeration device and an automatic light supplementing device; the gas-liquid phase mass transfer circulation pipeline is used for promoting efficient gas-liquid phase mixing and mass transfer, is arranged outside the photobioreactor body and is connected with the photobioreactor body, and the gas-liquid phase mass transfer circulation pipeline comprises a main circulation pipeline and an auxiliary circulation pipeline; the automatic cleaning device is used for automatically cleaning the interior of the photobioreactor body in all directions and comprises a high-pressure spraying array, a supporting arm, a main arm and a telescopic arm. According to the application, optimization and innovation are carried out from the aspects of light source type selection and energy efficiency optimization, mass transfer structure innovation, AI self-adaptive control integration and dead-corner-free cleaning and disinfection, the cost is remarkably reduced, and the microalgae culture efficiency and the large-scale application potential are improved.

Method for culturing microalgae by using beer waste liquid and application thereof

Absstract of: CN120173745A

The invention provides a method for culturing microalgae by using beer waste liquid and application of the method, and relates to the technical field of microalgae biological culture. According to the method disclosed by the invention, microalgae, especially chlorella sp. Of chlorophyta, are cultured by adopting the beer wastewater. Moreover, it is found for the first time that the effect of synergistically promoting the growth of the microalgae can be achieved when fermentation tank washing water is adopted as a nutritional ingredient to jointly culture chlorella (Chlorella sp.) FACHB-2900 and Navicula sp. FACHB-1996, and the composite microalgae can keep certain biological activity at a low temperature and also has excellent synergic cold resistance. The invention also provides a preparation method of the composite microalgae related fertilizer, and the microalgae fertilizer can be used for improving the soil performance of saline-alkali soil, and has excellent performances of promoting the growth of beet, increasing the yield and the like.

Method and device for treating sewage by utilizing bacterium-algae heterotrophic bacterium compound system

Absstract of: CN120172566A

The invention provides a method and a device for treating sewage by utilizing a bacterium-algae heterotrophic bacterium compound system, and belongs to the technical field of water treatment and recycling. Aiming at recycling of soluble methane and diversified removal of various pollutants such as carbon dioxide, organic carbon and nutritive salt, a specific microalgae-methane-oxidizing bacteria-heterotrophic bacteria compound microorganism system is constructed, efficient removal efficiency parameters are limited, ternary microorganism synergistic interaction is achieved, and the synergistic interaction target of reducing pollution and carbon is achieved. The MBR membrane assembly is adopted to intercept microbial effluent, and a specific efficient microbial community is maintained; the closed reactor aims at a specific removal object, dissolved gas is prevented from escaping, and recycling of soluble methane is guaranteed. The closed membrane bioreactor is suitable for culturing a specific ternary suspended microflora and can effectively treat soluble gas.

CELL ADHESION DEVICE FOR CULTURING MICROALGAE

Absstract of: WO2025123156A1

The present invention relates to an adhesion device (1) for culturing microalgae that increases the density of microalgae cultures and their biomass productivity. The device comprises a body (2) with an upper opening that contains a culture medium (3), which occupies half of its volume; a plurality of rotary discs (4) as a supporting surface on which the microalgae cells (5) adhere, promoting their growth to form a biofilm, said plurality of discs (4) being fixed to a horizontal rotation shaft (6), which passes through the body (2), and being equally spaced apart, the location of the rotation shaft (6) inside the body (2) being such that said discs remain semi-submerged in the culture medium (3); gas-liquid diffusers for gas transfer and bubbling in the culture medium (3); at least one moisture sensor and at least one temperature sensor for monitoring the moisture and temperature, respectively, of the gas phase inside the body (2) of the device (1); at least one temperature sensor for monitoring the temperature of the culture medium (3); an upper cover (7) on the upper opening of the body (2), which prevents the culture medium (3) and microalgae cells (5) from being exposed to the outside environment; a lighting board (8) arranged between each pair of discs (4) of the plurality of discs (4), being located on the rotation shaft (6) and arranged in slots (71) in the cover (7) so that said lighting boards (8) are not in contact with the inside of the body (2); and an electric mo

CULTIVATION DEVICE

Absstract of: US2025197786A1

A cultivation device comprises a water retention part and an accommodation part. Retention water is retained in the water retention part. A cultivation liquid and a microalga are accommodated in the accommodation part. The water retention part and the accommodation part are adjacent to one another. At least one section of the accommodation part is in contact with the water retention part. A peripheral section of the accommodation part has a contact region that contacts the retention water when the retention water is retained in the water retention part, and a non-contact region that does not contact the retention water.

MICROALGA CULTURING APPARATUS TO BE MOUNTED ON WALL SURFACE OF STRUCTURE, ENABLING EASY DETACHMENT OF MICROALGA

Absstract of: WO2025127340A1

The present invention relates to a microalga culturing apparatus to be mounted on a wall surface of a structure and to a microalga culturing apparatus which enables easy detachment of a microalga attached to the inner surface of a photosynthesis reactor, allows the cultured microalga to be easily harvested, and further enables increased usability.

MICROORGANISM FOR PROMOTING MICROALGAE GROWTH, MICROALGAE GROWTH PROMOTER, MICROALGAE CULTIVATION METHOD, AND MICROORGANISM SCREENING METHOD

Absstract of: JP2025092735A

To promote the growth of microalgae.SOLUTION: The present invention provides a microorganism belonging to any genus selected from Rhodococcus, Xanthobacter, Ancylobacter, Shewanella, or Aeromonas. The microorganism may be Rhodococcus cerastii of the genus Rhodococcus, Xanthobacter flavus of the genus Xanthobacter, or Ancylobacter rudongensis of the genus Ancylobacter. The microorganism may be intended for promoting the growth of cyanobacteria, green algae, gray algae or euglenoids.SELECTED DRAWING: Figure 4

ROTATABLE POWER SUPPLYING DEVICE USING MICROALGAE CULTURE BUBBLES AND CULTURING APPARATUS COMPRISING THE SAME

Absstract of: KR20250088251A

본 발명은 수조 내에서 부상하는 공기의 부력에 의해 상향이동하는 복수의 바스켓; 상기 복수의 바스켓이 일렬로 장착되며 공기에 의한 부력만으로 상기 바스켓의 상향이동과 함께 회전되는 바스켓 이송수단; 및 상기 바스켓 이송수단의 상단부 및 하단부에 한쌍이 결합되어 함께 회전하여 외부로 동력을 전달하는 회전동력전달부를 포함하는 미세조류 배양 기포를 이용한 수조내 회전동력장치 및 이를 포함하는 배양기를 제공한다.

Quantitative feeding system for preparation of microalgae culture medium

Absstract of: CN120158363A

The invention discloses a quantitative feeding system for preparation of a microalgae culture medium, which relates to the technical field of microalgae culture and comprises a base plate, a vertical plate vertically arranged at the top of the base plate, a microalgae culture tank arranged at the top of the base plate and a culture medium preparation and supply tank, the culture medium step-by-step replacement device and the centrifuge are sequentially arranged on the outer wall of the vertical plate from top to bottom, and the step-by-step dilution device is arranged on the base plate and located at the bottom of the centrifuge. When the microalgae culture medium feeding system is used for feeding a culture medium, the culture medium is supplied in a manner of gradually replacing and adapting the culture medium and thoroughly replacing and diluting the culture medium, so that microalgae can quickly adapt to the solution concentration of a new culture medium, and normal growth and reproduction of the microalgae are facilitated.

Culture Method of Polar Microalgae

Nº publicación: KR20250087223A 16/06/2025

Applicant:

한국해양과학기술원