Avocado Polyol Extraction via Saponification and Calcium Precipitation
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Solution Overview
Problem
Current methods for isolating avocadene from avocado fruit pulp are inefficient and costly, particularly due to difficulties in separating high amounts of fatty acid derivatives and avocadene polyols using chromatographic methods, and existing processes often involve toxic solvents or result in low purity extracts.
Innovation Solution
A process involving extraction, saponification, and separation using organic solvents, followed by calcium precipitation and purification with ethyl acetate or water, which allows for the selective extraction and high-purity isolation of avocadene and avocadyne without the need for chromatographic steps, achieving extracts with at least 90 wt.-% purity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If chromatographic methods are used for separation, then separation precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts and removes the problematic fatty acid derivatives through saponification, converting them into water-soluble soaps that can be easily separated from the organic phase containing avocadene. This eliminates the need for complex chromatographic separation steps while achieving high purity extraction of the target compound
Solution Approach 2:
The patent changes the chemical state of fatty acid derivatives by converting them from organic-soluble forms to water-soluble soap forms through saponification. This parameter change in solubility enables simple phase separation instead of requiring complex chromatographic methods, reducing device complexity while maintaining separation precision
2Ease of manufacture
If conventional extraction methods are used, then extraction simplicity is improved, but purity of the extract deteriorates
Solution Approach 1:
The patent introduces saponification as an intermediary step that converts fatty acid derivatives into water-soluble soaps. This intermediary transformation enables simple liquid-liquid phase separation between organic and aqueous phases, achieving high purity extraction without complex chromatographic equipment while maintaining process simplicity
3Quantity of substance
If seeds are used as source material, then quantity of polyols is improved, but applicability for food industry deteriorates
Solution Approach 1:
The patent applies local quality by treating different parts of the avocado differently - using seeds for maximum polyol extraction while using fruit pulp for food-grade applications. The saponification process enables this differentiation by effectively removing fatty acid derivatives from both sources, allowing each material to be optimized for its specific application context
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 produces extracts with at least 90 wt.-% avocado polyols, specifically avocadene, with high purity, reducing the reliance on toxic solvents and avoiding chromatographic steps, thereby improving efficiency and cost-effectiveness.
Implementation Method 1
subjecting said source of Persea to an extraction step preferably using organic solvents to obtain a first extract
Implementation Method 2
subjecting said first extract to saponification to obtain a second extract
Implementation Method 3
adding a source of calcium to said second extract to precipitate calcium soaps
Implementation Method 4
subjecting said third extract to further purification
Data Source
AI summary
Suggested is an extract of Persea, in particular Persea americana (Avocado) comprising at least 90 wt.-percent avocado polyols and preferably at least 95 wt.-percent avocadene, obtainable or obtained according to the following steps: (a) providing a source of Persea; (b) subjecting said source of Persea to an extraction step using organic solvents to obtain a first extract; (c) subjecting said first extract to saponification to obtain a second extract; (d) adding a source of calcium to said second extract to precipitate calcium soaps; (e) subjecting the product of step (d) to a separation step to obtain a third extract and said precipitated calcium salts; and optionally (f) subjecting said third extract to purification.