Nucleus covered with PHA

A technology of HB-HV and composition, applied in animal husbandry, application, coating, etc., can solve the problems of bacterial resistance, environmental problems, incomplete biodegradability, etc.

Inactive Publication Date: 2014-01-01
法国海洋勘探研究所 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the solutions indicated in the publications cited above raise environmental concerns due to the lack of biodegradability or incomplete biodegradability of the components used, whether they consist of synthetic coating agents or antibiotics
In addition, the use of antibiotics can cause public health problems due to the development of bacterial resistance

Method used

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  • Nucleus covered with PHA
  • Nucleus covered with PHA
  • Nucleus covered with PHA

Examples

Experimental program
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Embodiment Construction

[0030] In pearl culture, pearls are produced as a result of the deposition of mother-of-pearl on the core inserted into the recipient oyster during the transplantation step. The procedure for transplanting the core generally has a high failure rate due to poor healing of the recipient oyster or bacterial contamination of the incision made during transplantation. Therefore, the cores used in pearl culture are increasingly covered with a coating that enables a somewhat reduced failure rate of the implantation step and ensures the homogeneity of the surface of the core, resulting in high quality pearls.

[0031] The present invention therefore relates to a core lined or coated with a membrane comprising one or more polyalkyrinates (PHA). According to one embodiment of the invention, said PHA membrane is continuous around the core. According to one embodiment of the present invention, the PHA film has a thickness of 0.1 μm to 200 μm, preferably 1 μm to 100 μm, more preferably 5 μ...

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Abstract

The present invention relates to a nucleus covered or coated with a film including one or more PHA. The invention also relates to a PHA, characterized in that it is of the type PHB-V, a film and a composition including the PHA. The invention further relates to a film or a composition including a PHA and zosteric acid or a bioactive molecule. The invention moreover relates to a surface, preferably a nucleus, covered with the film of PHA, a method for production thereof, and methods for grafting a pearl oyster and producing a pearl using this nucleus. Finally, the present invention relates to a method for reducing graft failure and / or for improving the quality of the pearl using the nucleus according to the invention.

Description

technical field [0001] The present invention relates to the field of coating cores in the case of pearl culture (production of pearls by pearl oysters). The present invention thus relates to a core coated with a homogeneous membrane which has antibacterial properties and allows the quality of the pearls obtained to be improved and to reduce mortality after insertion of said core into a recipient pearl oyster rate and core rejection. Background technique [0002] Pearl farming is a human activity consisting in the cultivation of pearl oysters of the genus Pinctada (Pinctada sp) in a natural environment for the production of cultured pearls. The first step involves collecting and growing pearl oysters that will be used as donor oysters or recipient oysters. Transplantation consists of a surgical procedure during which the graft, a portion of the epithelium of the donor oyster mantle (approximately 4mm 2 ) along with a mother-of-pearl bead (i.e. core) is inserted into the go...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00C08G63/02C09D167/04
CPCA01K61/002A01K61/54A01K61/56Y02A40/81
Inventor J·盖泽内克C·西蒙-科林A·库扎亚E·巴彻雷
Owner 法国海洋勘探研究所
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