Jatropha Kernel Inner Skin Separation via Alkaline Treatment
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Solution Overview
Problem
The presence of high phorbol ester content in Jatropha curcas seed kernels makes the oil and cake unsuitable for animal nutrition and poses safety and environmental concerns, with existing methods being inefficient for industrial-scale removal of the inner skin, which is rich in phorbol esters, due to its tight binding to the kernel.
Innovation Solution
Chemical treatment of Jatropha kernels using hydrogen peroxide, sodium bicarbonate, and alkali solutions to loosen and separate the inner skin from the endosperm, reducing the phorbol ester content by up to 25% and enabling further processing to produce safer animal feed and bio-pesticide products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual or mechanical force peeling is used to remove the inner skin, then the inner skin can be removed, but the process is not feasible for industrial-scale processing
Solution Approach 1:
The patent applies chemical treatment by changing the chemical parameters of the environment (using alkaline solutions like sodium hydroxide or potassium hydroxide at specific concentrations and temperatures) to soften and separate the inner skin from the kernel, making it feasible for industrial-scale processing while maintaining effectiveness
2Quantity of substance
If soaking seeds in water overnight is used to remove inner skin, then some skin removal occurs, but less than 5% of kernel skins are removed
Solution Approach 1:
The patent changes the chemical composition parameter from plain water to alkaline solutions (sodium hydroxide, potassium hydroxide, or sodium carbonate at specific concentrations), which dramatically improves the inner skin removal efficiency to over 90% while reducing the required time from overnight to just 15-30 minutes of heating
Solution Approach 2:
The patent uses strong alkaline agents that accelerate the breakdown and separation of the inner skin through chemical reactions, significantly enhancing the removal rate compared to simple water soaking
3Object-affected harmful factors
If inner skin is not removed from kernels, then processing is simpler, but phorbol ester content in oil and cake remains high making them unsuitable for animal feed
Solution Approach 1:
The patent performs preliminary removal of the inner skin before oil extraction processing. By removing the high-phorbol-ester inner skin in advance, the subsequent oil and cake products have reduced phorbol ester content, making them suitable for animal feed while maintaining a relatively simple overall process
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 chemical treatment effectively reduces phorbol ester content in the seed cake, making it more suitable for animal feed and allows for the utilization of the inner skin as bio-pesticide agents, addressing the industrial-scale processing challenges and safety concerns.
Implementation Method 1
Chemical treatment of Jatropha kernels using hydrogen peroxide, sodium bicarbonate, and alkali solutions to loosen and separate the inner skin from the endosperm
Data Source
Figure 1A~1E
Figure 2A~2E
Figure 3A~3B
AI summary
The present invention relates to processes for reducing the amount of phorbol esters in the oil and cake produced from Jatropha curcas seed kernels. The invention also relates to the uses of the products of the process for oil, animal feed and anti-microbial, anti-mollusc, anti-tumor or bio-pesticide agents.