DNA Extraction from Historical Textile Thread Ends
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Solution Overview
Problem
Current DNA extraction techniques from historical artifacts are often destructive and ineffective, making it difficult to obtain human DNA from textiles like clothing without compromising the structural integrity of the samples, which are often fragile and historically significant.
Innovation Solution
A method is developed to identify and extract DNA from tied-off thread ends in hand-sewn textiles, focusing on areas where human saliva may have been used to facilitate thread insertion, allowing for non-destructive sampling and analysis of human DNA for various research purposes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If current DNA extraction techniques are applied to historical textiles, then human DNA can be obtained, but the structural integrity of the textile is compromised
Solution Approach 1:
The patent extracts only the tied-off thread ends from the textile, which contain concentrated human DNA from saliva used during sewing. This selective extraction of the specific component containing the desired DNA while leaving the rest of the textile intact resolves the contradiction between obtaining DNA and preserving structural integrity
Solution Approach 2:
The patent divides the textile into two parts: the tied-off thread ends containing DNA and the remainder of the textile to be preserved. By segmenting the sample and extracting only the DNA-containing portion, both DNA recovery and textile preservation are achieved
2Loss of information
If DNA is extracted from historical artifacts, then research information is obtained, but the artifact is damaged
Solution Approach 1:
The patent removes only the tied-off thread ends from the historical textile for DNA extraction, leaving the main artifact intact and undamaged. This selective removal provides research information while minimizing harmful effects on the artifact
Solution Approach 2:
The patent discards the tied-off thread ends (which have completed their functional purpose in the textile) while recovering the valuable DNA information contained within them. This allows research information to be obtained without damaging the valuable historical artifact
Data Source
AI summary
A method is provided for use with historical artifacts. A textile that contains hand-sewn stitching is identified among the historical artifacts, and one or more tied-off thread ends within the textile are identified. DNA is extracted from the tied-off thread ends. Other applications are also described.