Low Endotoxin Protein Coating for Pearl Nucleus Biocompatibility
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Solution Overview
Problem
Existing pearl culture techniques do not achieve a sufficiently high acquisition rate of high-quality pearls with thick pearl layers and low stains or scratches, as the biological compatibility between the mother pearl oyster and the pearl nucleus is not adequately enhanced, leading to suboptimal pearl quality.
Innovation Solution
A pearl culture material comprising a pearl nucleus or mantle coated with a low endotoxin protein having an amino acid sequence of SEQ ID NO: 1, with an endotoxin amount of 10 EU/g or less, applied at a coating amount of 20 pg/mm² or more, to improve biological compatibility and reduce immune reactions during nucleus insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional pearl nucleus (cut shell of other species) is inserted into the mother pearl oyster, then the nucleus insertion process can be completed, but the biological defense reaction becomes a heavy burden on the mother pearl oyster, reducing survival rate and pearl quality
Solution Approach 1:
The patent applies the intermediary principle by introducing a biocompatible coating layer (collagen, gelatin, or other biomaterials) between the foreign pearl nucleus and the mother pearl oyster's body. This coating acts as a mediator that reduces the biological defense reaction and improves compatibility, allowing the nucleus insertion to proceed without triggering severe immune responses that would harm the oyster's survival or the pearl's quality.
Solution Approach 2:
The patent applies parameter changes by modifying the surface properties of the pearl nucleus through coating with biomaterials. By changing the chemical and physical parameters of the nucleus surface (making it more biocompatible), the biological defense reaction is reduced, thereby improving the survival rate of the mother pearl oyster and the quality of the resulting pearl.
2Manufacturing precision
If a conventional pearl nucleus is inserted into the mother pearl oyster, then the nucleus insertion process can be completed, but the pearl layer formation is delayed or insufficient, resulting in thin pearl layers and low-quality pearls
Solution Approach 1:
The patent applies the preliminary action principle by pre-coating the pearl nucleus with biocompatible materials (collagen, gelatin, or other biomaterials) before insertion. This preliminary preparation creates an optimal surface that immediately promotes mantle cell adhesion and accelerates pearl layer formation, reducing the time required to achieve thick, high-quality pearl layers.
Solution Approach 2:
The biocompatible coating serves as an intermediary that facilitates the interaction between the pearl nucleus and the mantle tissue. This coating layer promotes cell adhesion and activation, thereby accelerating the pearl layer formation process and improving the thickness and quality of the resulting pearl layer.
3Manufacturing precision
If a pearl nucleus with poor biocompatibility is used, then the nucleus insertion can be performed, but stains and scratches appear on the pearl surface, reducing pearl quality
Solution Approach 1:
The biocompatible coating (collagen, gelatin, or other biomaterials) acts as an intermediary layer that prevents direct contact between the foreign nucleus and the mantle tissue. This intermediary layer reduces biological defense reactions that would otherwise cause stains and scratches on the pearl surface, thereby improving the overall quality and appearance of the cultured pearl.
Solution Approach 2:
The patent applies parameter changes by modifying the surface chemistry and physics of the pearl nucleus through biomaterial coating. This parameter modification creates a more biocompatible surface that reduces immune responses and prevents the formation of stains and scratches, leading to higher quality pearls with cleaner surfaces.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The use of low endotoxin proteins enhances the compatibility between the mother pearl oyster and the pearl nucleus, resulting in a higher acquisition rate of high-quality pearls with thick pearl layers and improved whiteness, while reducing stains and scratches by promoting early pearl layer formation and secretion efficiency.
Implementation Method 1
a pearl culture material comprising at least one selected from the group consisting of a pearl nucleus and a mantle, wherein the at least one selected from the group consisting of a pearl nucleus and a mantle contains a protein having 10 EU/g or less of an endotoxin amount
Data Source
AI summary
There are provided a pearl culture material containing at least one selected from the group consisting of a pearl nucleus and a mantle, and the at least one selected from the group consisting of a pearl nucleus and a mantle contains a protein having 10 EU/g or less of an endotoxin amount, a nucleus insertion method, and a pearl culture material composition.