6 results about "Pearl oyster" patented technology

This invention discloses an anti-inflammatory peptide derived from pearl oysters and its applications, relating to the field of bioactive peptide technology. The amino acid sequence of this anti-inflammatory peptide is TAMY. The anti-inflammatory peptide derived from pearl oysters provided by this invention can regulate the release of cellular inflammatory mediators, reduce the levels of NO and pro-inflammatory cytokines (such as TNF-α, IL-6, and IL-1β), and simultaneously promote the secretion of anti-inflammatory cytokines (such as IL-10), exhibiting excellent anti-inflammatory activity and suitable for use in functional foods, cosmetics, or pharmaceutical ingredients.

The preparation method comprises the following steps: extracting an intershell fluid active substance, extracting extracellular small vesicles as an active substance target, using hyriopsis cumingii pallium for conventional pearl mussel breeding, and preparing the bioactive preparation for skin injury repair from the raw material, so as to obtain the bioactive preparation for skin injury repair. The method comprises the following steps: collecting liquid in a gap between a pearl culture clam shell and an outer mantle, separating and extracting vesicles from the liquid through ultracentrifugation, taking freshwater pearl shell culture by-products as a sustainable source of bioactive substances, grinding the bioactive substances contained in the freshwater pearl shell culture by-products, optimizing components through molecular composition, and preparing the freshwater pearl shell culture by-products. A preparation with a stable bioactive substance structure for repairing skin injury radiated by ultraviolet rays is obtained. The extracellular small vesicles are extracted from pearl shells, the main components of the preparation are biological sources, the safety is high, the absorbability of a nanoscale molecular structure is good, an innovative solution is provided for skin repair, and high value-added conversion of pearl shells is achieved.

The invention discloses an efficient preparation method of marine pearl oyster larvae. Through the technical links of gamete maturity evaluation, gonad mucus removal, ovum maturation promotion and activation, sperm motility excitation, excessive sperm fertilization and the like, the hatching rate of 90% or above is obtained, and therefore the purpose of efficient larva preparation is achieved. The method is different from the traditional method of dissecting mixed sperms and eggs for filtering, placing the sperms and eggs in a hatching container for settling for 1 hour, then pouring out supernate and directly scattering the sperms and eggs settled to the bottom into a pool for hatching, the solidification cognition of traditional marine pearl oyster breeding is subverted, the defects of low hatching rate, poor stability and the like of the traditional method are overcome, a large number of high-quality larvae are obtained, and the breeding efficiency is improved. And a technical guarantee is provided for high-efficiency production of offspring seeds, heterosexual pairing breeding and creation of excellent strains in the future. The method has the advantages of simplicity and convenience in operation, high repetition rate, high practicability and the like.

The invention provides an active polypeptide and application thereof in culture of tegillarca granosa, and after amino acid optimization, the provided active polypeptide has a remarkable inhibition effect on common microorganisms such as vibrio and the like in aquaculture. The active polypeptide is further prepared into microcapsules with the particle size suitable for filter feeding of juvenile tegillarca granosa, and the microcapsules are fed to the tegillarca granosa, so that microbial diseases occurring in tegillarca granosa breeding are effectively reduced. The amino acid sequence of the polypeptide is SEQ ID NO: 2. The active polypeptide obtained by screening comes from pearl oyster, the amino acid sequence of the provided active polypeptide is optimized, and the active polypeptide has good antibacterial activity on vibrio harveyi. After high expression of the active polypeptide, the active polypeptide is prepared into the microcapsule with the particle size suitable for filter feeding of juvenile shellfish of tegillarca granosa, the growth of the tegillarca granosa is promoted, and diseases caused by vibrio harveyi are reduced.

The invention provides a composition for reducing pearl shell fouling organisms and a preparation method and application thereof, and belongs to the technical field of mariculture. The antifouling composition disclosed by the invention is prepared from the following raw materials in parts by mass: 15 to 25 parts of pseudoalteromonas leavening, 8 to 15 parts of macleaya cordata total alkali, 5 to 10 parts of acorus calamus essential oil and 10 to 20 parts of carboxymethyl chitosan. Through compounding of the pseudoalteromonas leavening, the macleaya cordata total alkali, the acorus calamus essential oil and the carboxymethyl chitosan, a remarkable synergistic anti-fouling effect is achieved, the synergistic coefficient Q is larger than or equal to 1.25, and the anti-fouling effect is far better than the sum of the single use effects of all the components; broad-spectrum anti-fouling of common fouling organisms for pearl shell culture such as barnacles, ciona glabra, coelpipe worms and bryozoon is achieved, the anti-fouling rate is larger than or equal to 93%, and the actual anti-fouling requirement for pearl shell culture is met.

The present invention provides a method for producing DHMBA, an antioxidant, from the flesh of bivalves of the superfamily Oenothera, such as pearl oysters or oysters, by heating or pressurizing the flesh of the pearl oysters or oysters, in a larger quantity and at a higher concentration than other bivalves. [Solution] The present invention is characterized in that 3,5-dihydroxy-4-methoxybenzyl alcohol can be produced in a larger quantity from the heat-treated bivalve meat of the Bivalviidae superfamily than from other bivalves by placing the meat of a bivalve belonging to the Bivalviidae superfamily into an extract and heating the extract.