Non-denatured Type II Collagen Extraction via Acid and Enzyme Pretreatment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for detecting non-denatured type II collagen in cartilage and collagen products are inefficient due to the difficulty in separating it from denatured or hydrolyzed collagen, which is insoluble and often aggregated with proteoglycans, making extraction and quantification challenging.
Innovation Solution
A pre-treatment method involving washing with neutral salt or guanidine hydrochloride buffers, followed by ultrasonic swelling, pepsin digestion, and elastase treatment to solubilize and separate non-denatured type II collagen from complex systems, allowing for subsequent qualitative and quantitative analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If acid swelling or pepsin method is used to extract collagen from cartilage, then collagen can be obtained, but the extraction level is low and the collagen remains aggregated and fibrous
Solution Approach 1:
The patent applies preliminary action by performing multiple acid treatment steps before the main extraction process. The cartilage is treated with acid solutions in sequence (first acid treatment, then second acid treatment with different pH), which pre-digests and loosens the cartilage matrix, making the subsequent collagen extraction more effective and reducing aggregation.
Solution Approach 2:
The patent utilizes parameter changes by systematically varying the pH values across different treatment stages. The first acid treatment uses a lower pH acid solution, while the second acid treatment uses a higher pH acid solution. This pH gradient approach optimizes the extraction efficiency at each stage and prevents collagen denaturation and aggregation.
2Quantity of substance
If multiple acid treatments are performed to improve extraction, then more collagen can be obtained, but the cartilage polysaccharide still binds to type II collagen and it remains aggregated
Solution Approach 1:
The patent applies segmentation by dividing the extraction process into distinct sequential stages: first acid treatment, second acid treatment, pepsin treatment, and elastase treatment. Each stage targets specific components (polysaccharides, proteins, cross-links) to progressively separate type II collagen from binding substances without causing aggregation.
Solution Approach 2:
The patent uses pepsin and elastase as intermediary enzymes to facilitate the separation of type II collagen from cartilage polysaccharides. These enzymes act as mediators that selectively digest specific bonds without damaging the collagen structure, enabling effective separation while maintaining collagen solubility and preventing aggregation.
3Productivity
If pepsin digestion is extended to improve extraction efficiency, then more collagen is released, but free monomeric collagen may be denatured and hydrolyzed by pepsin
Solution Approach 1:
The patent applies preliminary action by performing acid treatments before pepsin digestion. This pre-treatment loosens the cartilage matrix and exposes collagen molecules, making them more accessible to pepsin. As a result, shorter pepsin digestion times are needed to achieve high extraction efficiency, preventing over-digestion and structural damage to the collagen.
Solution Approach 2:
The patent uses parameter changes by optimizing the pH conditions for each treatment stage. The acid treatments create favorable pH conditions that enhance pepsin activity while protecting collagen structure. The systematic pH adjustment across stages ensures high extraction efficiency without denaturation or hydrolysis of the collagen molecules.
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 method effectively presents non-denatured type II collagen in a soluble state, enabling accurate detection and quantification, and is applicable to both collagen products and cartilage raw materials, improving extraction efficiency and maintaining the triple helix structure for effective immune tolerance mechanisms.
Implementation Method 1
washing with neutral salt or guanidine hydrochloride buffers
Implementation Method 2
presents non-denatured type II collagen in a soluble state
Implementation Method 3
ultrasonic swelling
Implementation Method 4
pepsin digestion
Implementation Method 5
elastase treatment
Data Source
AI summary
A pretreatment method for detection of an undenatured type II collagen in a cartilage collagen product or a cartilage is proposed. The method can separate an undenatured type II collagen from a complex environment system including proteoglycan, a hydrolyzed collagen, open-chain denatured collagen and the like, and present a dissolved state, thereby facilitating subsequent further qualitative and quantitative detection.