28 results about "Nannochloropsis" patented technology

The invention relates to the technical field of functional lipid preparation, in particular to high-purity nannochloropsis oculata polar lipid enriched by an enzymic method and a preparation method of the high-purity nannochloropsis oculata polar lipid. The method comprises the following steps: specifically and selectively hydrolyzing triglyceride by using immobilized Lip2 lipase to generate glycerol and free fatty acid, retaining and enriching polar lipid components, and carrying out centrifugal filtration and molecular distillation to obtain the high-purity nannochloropsis oculata polar lipid. The invention provides a method for preparing high-purity polar lipid by performing enzymolysis on nannochloropsis oculata oil by using lipase Lip2 produced by yarrowia lipolytica, which maximally retains the polar lipid and obtains a high-purity polar lipid product through the specific catalytic action of Lip2 lipase. The method which is mild in reaction condition, environment-friendly, simple in step and high in purity is provided for efficient enrichment of the nannochloropsis oculata polar lipid, the prepared polar lipid product is extremely high in purity, and the blank of efficient preparation of the nannochloropsis oculata polar lipid in the prior art is filled.

The invention discloses an indoor detoxification seedling raising method for plectropomus leopardus, and relates to the technical field of biology. The seedling raising method comprises the steps that after an indoor seedling raising pond is sterilized and killed, newly hatched seedlings of plectropomus leopardus are put into the indoor seedling raising pond, and after the newly hatched seedlings open to eat food, different sterilized and killed baits are adopted for feeding the seedlings in a stepped mode for seedling raising culture. According to the method, multiple baits such as nannochloropsis oculata, oyster larvae, SS rotifers, S rotifers, L rotifers, fairy shrimp nauplius larvae, copepod nauplius larvae, copepod middle worms, fairy shrimp adults and copepod adults are fed in a stepped mode, rapid growth of the plectropomus leopardus juvenile fish is promoted, the disease resistance of the juvenile fish is effectively improved, the environment adaptability is enhanced, and the survival rate of the plectropomus leopardus is increased. And the survival rate is well improved.

The invention relates to a biomass energy utilization and resource utilization technology, and aims to provide a method for improving the carbon sequestration capability of nannochloropsis oculata by domesticating and regulating a key enzyme with high ammonium salt. The method comprises the following steps: carrying out nitrogen salt gradient domestication on nannochloropsis oculata cells, and regulating and controlling the expression quantity of five key enzymes, namely H < + > transport ATP enzyme, glutamine synthetase, asparagine synthetase, carbonic anhydrase and ribulose-1, 5-diphosphate carboxylase / oxygenase, in the nannochloropsis oculata cells; the domesticated and cultured nannochloropsis oculata can independently use coked ammonium sulfate as a nitrogen source required by growth; the domesticated algal strains are subjected to transfer culture, and verification and screening are carried out aiming at the capability of fixing CO2 in flue gas and the prevention of over-acidification of the culture medium. According to the method, the utilization of coked ammonium sulfate by the nannochloropsis oculata can be enhanced without causing over-acidification of the culture medium, the microalgae culture cost can be effectively saved, and the flue gas CO2 immobilization capability of the nannochloropsis oculata is improved; a new thought is provided for large-scale breeding and cultivation by using coked ammonium sulfate and improvement of economic efficiency.

Provided is a composition for preventing and / or ameliorating premenstrual or postmenstrual discomfort or for preventing and / or ameliorating a menstruation-related disease or symptom.　Also provided is a Nannochloropsis-containing composition for preventing and / or ameliorating premenstrual or postmenstrual discomfort or for preventing and / or ameliorating a menstruation-related disease or symptom.

The invention provides a skin repairing composition for relieving red, itching and dry symptoms of sensitive skin and application, and belongs to the technical field of cosmetics. The composition comprises an effective amount of an extract of at least two algae selected from the group consisting of Phaeodactylum tricornutum, Spirulina, Chlorella and Micrococcus, and optionally comprises other skin repair ingredients cooperating therewith. The skin repair composition for relieving red, itching and dry symptoms of sensitive skin simultaneously and synergistically intervenes four major causes of sensitive skin formation, namely barrier damage, hyperneurosis, immune inflammation and micro-ecological imbalance, breaks vicious circle and establishes a repair closed loop by utilizing the multiple effects of specific algae active ingredients, and has the effects of relieving the symptoms of red, itching and dry symptoms of sensitive skin and relieving the symptoms of red, itching and dry symptoms of sensitive skin. Therefore, the problems of red skin, itching skin, dry skin and the like are radically relieved.

The invention relates to the field of biology, in particular to a composition of a rhodiola rosea alcohol extract and a nannochloropsis oculata extracting solution and application of the composition. The weight volume ratio of the rhodiola rosea alcohol extract to the nannochloropsis oculata extracting solution in the composition is (0.005 to 0.1) g: (0.02 to 0.5) mL. After the rhodiola rosea alcohol extract and the nannochloropsis oculata extracting solution are combined, the ROS content after hydrogen peroxide induction can be reduced.

The utility model discloses a nannochloropsis liquid nutrition supply device, and relates to the technical field of nannochloropsis liquid. The feeding device comprises a base and a feeding tank, the feeding tank is located above the base, a discharging pipe is installed at the bottom end of the feeding tank, a rotating rod is rotatably inserted into the feeding tank, a spiral blade is fixedly arranged on the outer side of the rotating rod and installed in the discharging pipe, a rotating sleeve rod is rotatably arranged at the top end of the inner wall of the feeding tank, and the rotating rod is rotatably inserted into the rotating sleeve rod. Stirring blades are fixedly arranged on the outer side of the rotating sleeve rod, a transmission rod is rotatably inserted into the supply tank, a first gear is fixedly arranged on the outer side of the transmission rod, a second gear is fixedly arranged on the outer side of the rotating sleeve rod, and the first gear is meshed with the second gear; through mutual cooperation of structures such as the supply tank, the discharging pipe, the spiral blade and the stirring blade, various nutrient substances can be mixed, meanwhile, supply can be conducted in the cultivation barrel in a quantitative mode, the problem that manual operation is tedious is solved, and therefore the purpose of improving efficiency is achieved.

The present disclosure relates, in part, to nannochloropsis microalgae that produce recombinant viruses. Expression cassettes, transgenes and methods for producing recombinant viruses in the nannochloropsis oculata are also provided. In particular, methods and materials are provided for producing a recombinant adeno-associated virus (AAV) in nannochloropsis oculata. In some embodiments described herein, the nannochloropsis oculata is a marine nannochloropsis oculata.

The invention relates to the technical field of wound repair dressings, in particular to a Janus dressing of multilevel structure particles based on a microbial template and a preparation method of the Janus dressing. The Janus dressing comprises a supporting base material and magnetic nannococcus biochar microsphere (at) ZnO nanotube arrays loaded on the surfaces of the two sides of the supporting base material. The magnetic nannochloropsis charcoal microsphere and ZnO nanotube array is a composite particle with a magnetic nannochloropsis charcoal microsphere as an inner core and a ZnO nanotube array as a shell layer, and ZnO nanotubes in the composite particle are radially arranged outside the magnetic nannochloropsis charcoal microsphere; wherein the magnetic nannococcus biochar microsphere and ZnO nanotube composite particles on the surface of one side of the supporting base material are modified with a hydrophobic polymer. The Janus dressing has excellent photo-thermal sterilization / zinc ion sterilization, tissue fluid regulation and tissue regeneration promotion capabilities, and has excellent chemical stability and structural stability.

Biostimulant compositions and methods for enhancing soil organic carbon are provided. A mixture of bioavailable B12 and amino acids phenylalanine (Phe) and lysine (Lys)—was found to enhance soil organic carbon and crop growth due to synergistic effects between the bioavailable B12 and the PheLys. The bioavailable B12 and the PheLys may be derived from various sources, including, e.g., cyanobacteria (e.g., Spirulina—Arthrospira platensis) or green algae (e.g., Nannochloropsis spp.) cultivated under photosynthetically controlled conditions to yield upregulated bio-active compounds such as bioavailable B12 and amino acids. One or more sources may be used to provide the bioavailable B12, Phe and Lys, and algal cultivation may be integrated with additional industries to yield synergistic biostimulation effects.

The invention relates to the technical field of microbial culture, and particularly discloses a culture method for improving 24-methylene cholesterol content of nannochloropsis oculata. Key substances involved in the method comprise a nitrogen source, a phosphorus source, salicylic acid, an organic carbon source and L-methionine. The preparation method comprises the following steps: firstly, enabling nannochloropsis oculata to accumulate biomass through photoautotrophic culture, then activating a target product synthesis pathway through nitrogen and phosphorus dual limitation and illumination composite stress, and finally, synergistically enhancing product accumulation through an exogenous carbon source and L-methionine. The method can be used for large-scale culture of nannochloropsis oculata to efficiently obtain 24-methylene cholesterol, is suitable for the fields of medicines, health care products and the like, and has the advantage of high target product synthesis efficiency; besides, through three-stage collaborative design, the preparation method disclosed by the invention is clear in process and controllable in operation, can balance the growth of nannochloropsis oculata and product synthesis, is adaptive to industrial production requirements, and has the advantage of high practicability.

The invention discloses a dual-mode photocatalytic reactor based on a bionic hollow nannochloropsis structure, and relates to the technical field of industrial waste gas purification. A reaction unit simulates a spherical multicellular aggregate structure which efficiently utilizes light energy and promotes material exchange through hollow nannochloropsis; a novel device capable of synchronously strengthening light energy capture, optimizing a reaction flow field and realizing modular maintenance is constructed, and the energy utilization efficiency, the mass transfer performance and the operation convenience are improved.