一种基于食品肠衣的蛋白基生物材料在组织工程中的应用

By employing gentle enzymatic or acid extraction and endotoxin removal processes, waste casings from the food industry are transformed into multifunctional biomaterials. This solves the problems of high cost, complex processes, and limited applications of collagen-based materials in existing technologies, enabling efficient and flexible applications of biomaterials.

CN121802003BActive Publication Date: 2026-07-17HUAZHONG UNIV OF SCI & TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Filing Date
2026-03-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies lack gentle extraction methods to convert waste casings, a byproduct of the food industry, into active proteins, and fail to effectively remove endotoxins. This results in high costs, complex processes, and limited application forms for collagen-based biomaterials, making it difficult to meet the safety requirements of biomedical materials.

Method used

Collagen from edible animal casings is extracted using a mild enzymatic or acidic method. Endotoxins are removed by rinsing with surfactants and incubating with sucrose. Collagen fibers that can self-assemble under physiological conditions are then prepared and formed into a rapidly resolvable lyophilized powder for use in three-dimensional cell culture, surgical sutures, and tissue engineering scaffolds.

Benefits of technology

This technology enables the low-cost and efficient transformation of waste casings into multifunctional biomaterials that meet the performance and form requirements of different tissue engineering applications. It avoids the problems of high-temperature degradation and endotoxin residues associated with traditional methods, and provides flexible application forms and high-value-added products.

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Abstract

本发明涉及一种肠衣源蛋白基生物材料在组织工程中的应用,属于生物材料高值化利用技术领域。将蛋白基生物材料进行冷冻干燥得到凝胶粉,该凝胶粉可直接与细胞悬液混合进行培养,可直接作为手术线纺丝原料,也可和其他材料掺杂制作生物支架;蛋白基生物材料制备过程为:将可食用动物肠衣进行复水、清洗、冻干、粉碎;在非变性条件下,通过酶法或酸法从粉碎后的动物肠衣中提取活性蛋白组分,其中提取过程全程避开水解温度;将得到的蛋白组分调节至pH为7‑8,得到能够在生理条件下自组装的蛋白基生物材料。与传统动物来源胶原相比,本发明材料来源安全、成本低廉、批间差异小,能够满足不同组织工程应用对材料性能和形式的多样化需求。
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