Cellulose Microorganism Detection Using Cellulase and qPCR
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Solution Overview
Problem
Current methods for determining microbial purity in the pulp and paper industry are labor-intensive, time-consuming, and lack accuracy and sensitivity, making it difficult to effectively monitor the hygiene of packaging materials.
Innovation Solution
The method involves using cellulase enzymatic pretreatment followed by quantitative PCR to enhance the detection of microorganisms in cellulose-based materials, allowing for accurate and sensitive determination of microbiological purity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional microbiological cultivation methods are used, then microorganisms can be detected, but the method is labor-intensive and time-consuming
Solution Approach 1:
The patent replaces traditional mechanical cultivation methods with enzymatic digestion (cellulase treatment) followed by filtration and PCR-based detection. This substitution eliminates the need for time-consuming microbial cultivation while maintaining detection accuracy, directly resolving the contradiction between measurement precision and productivity.
2Measurement precision
If sample dilution is performed to count single colonies, then colony formation can be observed, but the reproducibility is poor due to variation in colony count
Solution Approach 1:
The patent replaces manual colony counting with automated PCR-based quantification. The enzymatic digestion followed by filtration and PCR amplification provides a standardized, automated measurement process that eliminates manual counting errors and sample-to-sample variation, thereby improving both accuracy and reproducibility.
3Difficulty of detecting and measuring
If mechanical grinding is used to process cellulose material, then microorganisms can be released, but the process is time-consuming and labor-intensive
Solution Approach 1:
The patent changes the chemical parameters of the cellulose material by applying enzymatic digestion with cellulase. This biochemical transformation efficiently breaks down cellulose bonds and releases microorganisms without requiring extensive mechanical grinding, thereby reducing processing time while maintaining microorganism accessibility for detection.
4Productivity
If PCR-based methods are used, then detection speed is improved, but the sensitivity and accuracy are not satisfying
Solution Approach 1:
The patent applies preliminary enzymatic digestion with cellulase before PCR detection. This pre-treatment step efficiently releases microorganisms from cellulose matrices and eliminates inhibitors, ensuring that the subsequent PCR analysis operates on optimized samples. This preliminary action enhances both the sensitivity and accuracy of PCR-based detection while maintaining rapid detection speed.
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
This approach enables rapid, accurate, and sensitive detection of microorganisms, improving the hygiene of packaging materials by allowing early detection of contaminations and reducing the need for extensive mechanical grinding, thereby enhancing the reliability and efficiency of microbial purity analysis.
Implementation Method 1
treating the suspension of step (a) with one or more enzyme preparation(s) having cellulase activity
Implementation Method 2
conducting a PCR analysis on the isolated nucleic acids of step (d), wherein the PCR result indicates the microorganism content of the sample
Data Source
AI summary
The present invention relates to determination of the microorganism content in material comprising cellulose within the pulp and paper industry. The material comprising cellulose is enzymatically pretreated and microorganisms are determined using PCR based technology.