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98 results about "Pearl oyster" patented technology

Pinctada is a genus of saltwater oysters, marine bivalve mollusks in the family Pteriidae, the pearl oysters.These oysters have a strong inner shell layer composed of nacre, also known as "mother of pearl".. Pearl oysters are not closely related to either the edible oysters of family Ostreidae or the freshwater pearl mussels of the families Unionidae and Margaritiferidae.

Breeding method of night fluorescent pearl oyster

The invention discloses a breeding method of a night fluorescent pearl oyster, comprising the following steps of: uniformly mixing night fluorescent powder with epoxide resin; coating an obtained mixture on the surface of a pearl nucleus; curing, and coating methyl methacrylate as a protecting layer; treating by using a pearl nucleus adjusting agent prepared from algal polysaccharides and aureomycin; treating cell shells by using an adjusting agent prepared from shellfish meat hydrolyzate same as that for a pearl oyster (mussel), and aureomycin, and carrying out an pearl-nucleus-inserting operation; and then fostering a freshwater mussel or pearl-breeding shellfish in a recuperation pool temporarily after the pearl-nucleus-inserting operation, then placing the freshwater mussel or pearl-breeding shellfish in a breeding water area for hoisted breeding, and harvesting after maturity to obtain a pearl, namely a night fluorescent pearl. According to the breeding method of the night fluorescent pearl oyster, the problems that the traditional pearls have single kind and low added value as well as the pearl-nucleus-inserting operation has low nucleus reserving rate and great repelling force are mainly solved; the ornament and the added value of the pearls are increased; and the nucleus splitting rate and the repelling force of the pearl oyster subjected to the operation are reduced.
Owner:GUANGDONG OCEAN UNIVERSITY

Method for breeding natural pearls through pearl oysters and obtained pearls

The invention relates to a method for breeding natural pearls through pearl oysters and obtained pearls, and belongs to the technical field of pearl breeding. The method includes the following steps that shells are taken and processed into nanometer shell powder, the nanometer shell powder is sterilized, sterilized and filtered seawater is added into the nanometer shell powder, and shell powder paste is prepared for usage; the pearl oysters are taken, oyster openings of the pearl oysters are formed downwards so that water and impurities in pearl oyster bodies can flow out of the pearl oysters,and through medicine anesthesia, all the oyster openings of the pearl oysters can be open for usage; an appropriate amount of shell powder paste is injected into vela of the pearl oyster bodies and the shells; the oyster openings of the pearl oysters into which the shell powder paste is injected are upward, standing is performed, then the pearl oysters are placed into seawater for breeding, and the pearls can be collected after the pearls grow up. According to the method for breeding the natural pearls through the pearl oysters, cell tab transplanting is not needed, substances containing calcium carbonate are directly injected into the vela, and nacre are formed by the utilization of the vela of the oyster bodies. According to the method for breeding the pearls, investment is small, benefits are high, the dead rate during breeding of the oysters is small, and return is large.
Owner:广东荣辉珍珠养殖有限公司

External physical stimulation method for promoting secretion of pearl oysters

ActiveCN102057885AImprove bead qualityEvenly secretedClimate change adaptationPisciculture and aquariaAverage currentPulsed DC
The invention discloses an external physical stimulation method for promoting secretion of pearl oysters. The method comprises the following steps: selecting a water tank and storing water in the water tank, wherein the water is pollution-free water, the pH value is 7.5-8.5, the water temperature is 25-28 DEG C, and the dissolved oxygen in the water is sufficient; keeping the depth of the water in the water tank at 20-30 cm, breeding the pearl oysters in the water, and keeping a space between adjacent pearl oysters; putting a pair of electrodes in the water tank, and immersing the electrodes in the water; and implanting pearl nuclei into the pearl oysters, and 40-50 days later, performing recurrent pulse galvanic stimulation, wherein during the galvanic stimulation, the galvanic stimulation is performed through the electrodes at fixed time every day, the time intervals of the galvanic stimulation every day are uniformly distributed within 24 hours, the average current of the electrodes is 0.1-1.5 mA, and the voltage between the two electrodes is 3-12 V. According to the external physical stimulation method for promoting the secretion of the pearl oysters disclosed by the invention, the intensity, frequency and distribution of the stimulation current are reasonably controlled, thus the uniform secretion of the pearl sacs can be promoted, and the effects of shortening the growth period and improving the pearl quality can be improved.
Owner:杭州元水生态农业发展有限公司

Method for extracting antibacterial peptide from pearl oyster meat

The invention discloses a method for extracting an antibacterial peptide from pearl oyster meat, which comprises the following steps: taking the pearl oyster meat after pretreatment, adding ice water for cold homogenation so as to get homogenate; adding flavourzyme into the homogenate, uniformly mixing, then regulating the working frequency of ultrasonic waves to 35kHz, regulating the strength of the ultrasonic waves to 280-360W and regulating the temperature to 50-65 DEG C for performing ultrasonic treatment for 90-100 minutes; continuing to performing enzymolysis on the homogenate for 1-2 hours after the ultrasonic treatment still in a constant-temperature water bath at the temperature of 50-65 DEG C and then performing enzyme inactivation and cooling treatment for getting enzymatic hydrolysate; and performing centrifugal treatment on the enzymatic hydrolysate, taking supernatant liquid, regulating the operation pressure of membrane separation to 2-3bar, regulating the temperature to 3-10 DEG C, utilizing the membrane separation technology for performing ultrafiltration treatment, collecting separation liquid with the intercepting molecular weight of 5000-10000Da, freeze-drying and then getting an antibacterial peptide product of the pearl oyster meat. The method uses the ultrasonic wave technology to assist the hydrolysis of the flavourzyme for carrying out the extraction of the antibacterial peptide in the pearl oyster meat, so that the operation is simple, the hydrolysis rate and the antibacterial activity can be improved, the hydrolysis time is shortened, the production cost is low, the product is safe, waste pearl oyster meat after opening pearls can be utilized with high value and further the economic benefits of a manufacturer are improved.
Owner:SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI

Ocean actinomycete fermentation extract, composite thereof, and application in biofouling resistance

The invention relates to an application of ocean actinomycete (Salinispora pacifica) SCSIO 00013 fermentation extract in biofouling resistnace and is characterized in that the ocean actinomycete SCSIO 00013 stain is inoculated to a Gause 1 cultural medium so as to be fermented; the gained mycelium is separated from fermentation solution and is then extracted by organic solvent; coarse extract is gained by concentrating and combining the extract; the coarse extract is suspended on water and extracted by chloroform or ethyl acetate; chromatography of the extract is carried out by a normal-pressure silica gel column; a solution system such as chloroform-acetone and the like is used as eluent so as to carry out gradient elution; thin layer chromatography analysis of fraction is carried out; chloroform-acetone with the volume ratio of 4:1 is used as solvent to extend the system; the fraction with the Rf value Rf ranging from 0.20 to 0.75 is collected and is then combined; subsequently, the pigment is removed, thus gaining target extract. The fermentation extract can be used for halobios fouling resistance; the coating consisting of the fermentation extract and film-forming material contains no heavy metal, has no harm on the environment and can be suitable for the cultivation of marine pearl oyster.
Owner:SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI

Cultivation method of non-nucleus one-shell multi-pearl seawater pearls

The invention discloses a cultivation method of non-nucleus one-shell multi-pearl seawater pearls. The cultivation method mainly comprises the steps that adult pearl oysters are taken as donors and washed clean, and external permeable membrane tissue in pearl oyster meat is taken in a clean environment and washed clean with adenosine disodium triphosphate diluent; the external permeable membrane tissue is cut into particles, and the particles and external permeable membrane slime form external permeable tissue fluid; adult healthy seawater pearl oysters are taken as receptors, a slot is formed in the portion between the upper shell and the lower shell of each receptor oyster in a clean environment, and the external permeable tissue fluid is implanted into the receptor oysters through receptor oyster external permeable membranes; the overall steps are completed within three minutes. The receptor oysters implanted with the external permeable tissue particles are rapidly placed into clean seawater to be bred temporarily, and then are placed into a seawater breeding environment in three hours to be naturally bred. The adenosine disodium triphosphate diluent is prepared with 10 milliliters and 10 milligrams of commodity adenosine disodium triphosphate and 50 milliliters of sterile water. The pearl oysters cultivated by using the method have no surgical wound and are high in survival rate and yield and good in quality.
Owner:北海市旺海海洋科技有限公司

Polyculture mode for marine products

The invention discloses a polyculture mode for marine products. Traditional marine product culturing modes are culturing modes of single varieties, fodder needs to be cast in the culturing process, the utilization rate of net cages is low, and the culturing cost is high. According to the polyculture mode for the marine products, pearl oysters and seaweeds are cast in a net cage in which fishes are cultured, the fishes, the pearl oysters and the seaweeds are cultured in the net cage together, the cast quantity of the pearl oysters meets the standard that a pearl oyster layer with the thickness of 10-12 cm is formed at the bottom of the net cage, and the quantity ratio of the cast quantity of the seaweeds to the cast quantity of the fish is 10 kilograms : 100-300 pieces, and the seaweeds meet the standard that the carrageenan content reaches 25-60%, the seaweeds are suitable for growing in the environment with the seawater temperature of 25-33 DEG C and the seawater salinity of 1.018-1.025 baume degrees. The three different cultured varieties can form a food chain in benign circulation, so that fodder does not need to be cast in the whole culturing process; by means of the food chain in benign circulation, a culturing sea area is made to be clean and environmentally friendly, the water body is clean, pest and disease damage is not prone to occurring, the culturing cost is low, and benefits are obvious.
Owner:北海市珍源海洋生物有限公司

Culture method of amorphous pearls

The invention provides a culture method of amorphous pearls. The method comprises the following steps of: (1) cutting off edge membranes of freshwater mussels or pearl oysters, cutting off color lines, taking pallium exocuticles and putting the pallium exocuticles in a culture dish containing a Hanks liquid; (2) taking the pallium exocuticles out of the culture dish and mashing the pallium exocuticles for 3-5 minutes to obtain pulp; (3) sucking the pulp into a centrifuge tube, and naturally settling for 3-5 minutes to obtain a suspending liquid; (4) transferring the suspending liquid into another centrifuge tube and removing larger tissue blocks to obtain the final suspending liquid for layer use; and (5) pumping the suspending liquid by using an injector and injecting the suspending liquid into palliums or visceral masses of the freshwater mussels or pearl oysters by using the injector. In the production process of non-nucleated pearls, the culture method has the advantages that the wound is small; the wound can be healed easily and the survival rate of the freshwater mussels or pearl oysters is high; in the production process of nucleated pearls, the problems of uneven flakelet wrapping, uneven nacre secretion or flakelet falling off can be overcome; and the secretion capability of nacre of the freshwater mussels or pearl oysters can be improved greatly and the production cycle can be reduced by more than 20%, therefore, the culture method has the advantage of high beneficial and practical value.
Owner:HUNAN UNIV OF ARTS & SCI +1
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