Lignocellulolytic Enzyme Composition for Thermal Stability
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Solution Overview
Problem
Existing lignocellulolytic enzymes face challenges in stability at industrial scales due to their inherent characteristics, leading to high costs and impacting the economic feasibility of bioethanol production from lignocellulosic biomass.
Innovation Solution
A formulation comprising 65% to 85% lignocellulolytic enzyme, 10% to 15% petrochemical waste stream from a naphtha to mono-ethylene glycol production unit, and 5% to 20% molasses, synergistically improves enzyme stability at both ambient and operational temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If lignocellulolytic enzymes are used at industrial scale, then bioethanol production from lignocellulosic biomass can be achieved, but enzyme stability deteriorates leading to high costs
Solution Approach 1:
The patent introduces molasses and petrochemical waste stream as intermediary substances that mediate between the enzyme and the harsh industrial environment. These additives act as stabilizing agents that protect the enzyme structure from denaturation while allowing the enzyme to maintain its catalytic function for bioethanol production
Solution Approach 2:
The patent changes the chemical composition parameters of the enzyme formulation by adding specific concentrations of molasses (5-20% w/w) and petrochemical waste stream (10-15% w/w). This parameter modification transforms the enzyme from being unstable in industrial conditions to being stable and cost-effective for large-scale bioethanol production
2Reliability
If stabilizing agents are added to improve enzyme stability, then enzyme performance is enhanced, but formulation complexity increases
Solution Approach 1:
The patent employs molasses and petrochemical waste stream as stabilizing agents that are derived from or compatible with the existing bioethanol production process. These additives essentially stabilize the enzymes using substances already present in or producible from the same industrial system, thereby enhancing stability without significantly increasing formulation complexity
Solution Approach 2:
The patent creates a homogeneous formulation where the stabilizing agents (molasses and petrochemical waste stream) are fully miscible with the enzyme solution. This homogeneous mixture ensures uniform distribution of stabilizing components throughout the formulation, simplifying the overall formulation structure while maintaining enhanced enzyme stability
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 combination of petrochemical waste and molasses enhances enzyme stability, maintaining maximum performance in total cellulase activity, β-glucosidase activity, and protein stability at 50°C, and β-glucosidase activity at 32°C, reducing degradation and improving enzyme performance.
Implementation Method 1
The combination of petrochemical waste and molasses enhances enzyme stability, maintaining maximum performance in total cellulase activity, β-glucosidase activity, and protein stability at 50°C
Data Source
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Figure 1(c)
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AI summary
The present invention relates to a formulation to stabilize lignocellulolytic enzyme mixture. This invention in particular relates to a formulation composed of lignocellulolytic enzyme with critical dosages of molasses either with petrochemical waste or glycerol as an additive to improve enzyme stability in a synergistic manner.