Recovering Bioactive Compounds from Post-Distillation Plant Residue
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Solution Overview
Problem
The existing practice of discarding residual plant material after essential oil distillation overlooks the potential for recovering valuable compounds with antioxidant and medicinal properties, such as phenolic compounds, flavones, and terpenes, which are not considered to yield appreciable substances post-distillation.
Innovation Solution
A method involving the use of solvents like ethanol, NaOH, and hexane to extract substances from post-distillation plant material, allowing for the recovery of phenolic compounds and other bioactive agents, including essential oils, from plant materials like oregano, rosemary, and mint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If residual plant material is discarded after essential oil distillation, then the distillation process is simple and quick, but valuable bioactive compounds are lost
Solution Approach 1:
The patent applies the discarding and recovering principle by transforming the discarded residual plant material into a valuable resource. Instead of throwing away the spent plant material after essential oil distillation, the invention extracts bioactive compounds (phenolic compounds, flavonoids, terpenes, antioxidants) from this waste stream using solvent extraction methods. This converts a waste disposal problem into a value-added recovery process, eliminating substance loss while maintaining operational simplicity through straightforward extraction procedures.
Solution Approach 2:
The patent applies the extraction principle by using solvents to selectively remove and isolate bioactive compounds from the residual plant material. The extraction process targets specific valuable substances (phenolic compounds, flavonoids, terpenes, antioxidants) while leaving other components behind. This selective extraction enables recovery of high-value compounds from the waste material without requiring complex processing, thus reducing substance loss while keeping the overall process simple.
2Quantity of substance
If solvent extraction is performed on post-distillation plant material, then bioactive compounds are recovered, but additional processing steps are required
Solution Approach 1:
The patent applies the preliminary action principle by performing the essential oil distillation first, which automatically pre-processes the plant material and leaves behind a residue that is already prepared for extraction. The distillation process itself serves as a preliminary step that concentrates the bioactive compounds in the residual material, making the subsequent extraction more efficient. This sequential approach maximizes the quantity of recoverable substances while minimizing additional processing time, as the material is already in an optimal state for extraction after distillation.
3Manufacturing precision
If multiple solvents are used for extraction, then extraction efficiency is improved, but the process becomes more complex
Solution Approach 1:
The patent applies the segmentation principle by dividing the extraction process into distinct stages using different solvents with specific properties. Each solvent targets different types of bioactive compounds based on their solubility characteristics - for example, using non-polar solvents for terpenes and essential oils, polar solvents for phenolic compounds and flavonoids. This segmented approach extracts different compound classes in sequence, improving overall extraction efficiency and precision while keeping each individual extraction step simple and manageable, thus avoiding the need for a single complex extraction system.
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 method effectively retrieves a range of bioactive compounds from residual plant material, demonstrating equivalent antioxidant properties to those from non-distilled materials, expanding the value of plant-derived therapeutic agents and traditional plant components.
Implementation Method 1
contacting the post-distillation plant material with a solvent under conditions permitting extraction of the one or more substances from the plant material into the solvent
Data Source
AI summary
Methods for recovering valuable compounds and substances from plants after distillation of oils are disclosed. The methods involve various aqueous and non-aqueous solvent extraction of plant material from which oils have been distilled previously.