Polyphenol Extraction from White Grape Residue
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Solution Overview
Problem
Current methods for extracting polyphenols from white grape by-products are complex, require filtration steps, and are not easily scalable, limiting their industrial application and efficiency.
Innovation Solution
A simple method involving a mixture of white grape by-products and a dispersant, such as sand, with a solvent, followed by elution and recirculation of eluates, which avoids suspended solids and allows for the production of antioxidant and antibacterial extracts without the need for filtration, and can be scaled up for industrial use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional extraction methods are used to obtain polyphenols from white grape by-products, then polyphenol extraction can be achieved, but the process becomes complex and requires filtration steps
Solution Approach 1:
The invention extracts and removes the problematic component (suspended solids) from the extraction process by using a filtration step, thereby simplifying the overall process while maintaining polyphenol extraction efficiency. The filtration step separates the desired polyphenol extract from solid particulates that would otherwise complicate the process.
Solution Approach 2:
The invention changes the extraction parameters by using specific solvent compositions (ethanol-water or methanol-water mixtures) and controlling extraction conditions to achieve efficient polyphenol extraction without generating excessive suspended solids, thereby reducing the need for complex filtration steps.
2Quantity of substance
If conventional extraction methods are used to obtain polyphenols from white grape by-products, then polyphenol extraction can be achieved, but the method is not easily scalable
Solution Approach 1:
The invention divides the extraction process into distinct, manageable stages (extraction, filtration, concentration) that can be independently optimized and scaled. This segmentation allows each step to be scaled up for industrial production while maintaining overall extraction efficiency and quality control.
3Reliability
If filtration steps are included in the extraction process, then suspended solids are removed, but the process becomes more complex and time-consuming
Solution Approach 1:
The invention performs preliminary filtration or settling steps before the main extraction process to remove suspended solids in advance. This preliminary action prevents solids from interfering with the extraction and eliminates the need for complex post-extraction filtration, thereby maintaining extract purity while simplifying the overall process.
4Quantity of substance
If more solvent is used in the extraction process, then polyphenol extraction efficiency increases, but solvent consumption and cost increase
Solution Approach 1:
The invention implements continuous extraction processes or multiple sequential extraction steps with the same solvent system, allowing the solvent to be reused or recycled. This continuity maintains high extraction efficiency while reducing overall solvent consumption compared to single-step extraction requiring large solvent volumes.
Solution Approach 2:
The invention recovers and reuses the extraction solvent after the extraction process through evaporation or distillation steps. The solvent is recovered from the polyphenol extract and reused in subsequent extraction cycles, thereby maintaining extraction efficiency while significantly reducing solvent consumption and cost.
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 extracts polyphenols with antioxidant and antibacterial properties, achieving high yields and reducing solvent consumption, and the resulting extracts are stable and suitable for cosmetic, pharmaceutical, and nutritional applications.
Implementation Method 1
preparing a mixture comprising a white grape by-product and a dispersant
Implementation Method 2
adding a solvent, preferably an aqueous alcohol or an aqueous glycol
Implementation Method 3
eluting, and collecting the eluates
Data Source
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AI summary
The invention relates to a polyphenol extract from white-grape residue. The invention relates to a straightforward method with few steps for obtaining extracts having antioxidant and anti-bacterial properties from white-grape residue. Due to the characteristics white-wine production, which is carried out by exclusively fermenting the must squeezed from the grapes, without any contact with the remains of pulp, skin and seeds, the residue generated during the method (white-grape bagasse) is very rich in polyphenols, since smaller amounts of same are transferred to the wine. The proposed procedure uses non-contaminating materials, takes place under gentle conditions and prevents the obtained eluates from containing suspended solids, enabling extracts rich in bioactive polyphenols to be obtained, which can be used on an industrial scale, essentially in the cosmetic, pharmaceutical and/or food industries.