Recovering polyphenols from apple peels transforms industry by-products into valuable antioxidant ingredients for food and beverage applications. Pentafood resin plants enhance purity and repeatability by selectively separating polyphenols from aqueous extracts of apple peel.
Polyphenol recovery plants from apple peel extract
Process overview
The Pentafood process involves raw material preparation, filtration, adsorption, and elution to efficiently recover polyphenols using food-grade resins. The system optimizes polyphenol yield and purity while offering customization based on extraction demands and purity goals.
Engineering and automation
These plants feature robust automation with PLCs for managing process cycles and safety interlocks. The skid-mounted design allows easy integration, with pneumatic valves ensuring precise control.
Key advantages

Technical configuration
Polyphenol recovery plants employ food-grade adsorbent resins in packed columns. Automation via a PLC manages processes, guaranteeing efficiency from preparation to elution. Components are mounted on a stainless-steel frame, ensuring hygienic standards and versatility for varying operational scales.
Sizing inputs
- Feedstock characteristics like moisture and particle size.
- Extraction conditions including temperature and duration.
- Post-filtration turbidity and solid levels.
- Polyphenol targets for purity, TPC, and standardization.
- Operational logistics regarding flow rates and shifts.
Each input aids in designing a system that maximizes yield and maintains the stability of the recovered polyphenols.
FAQ
It recovers and concentrates the polyphenolic fraction (antioxidant compounds) by retaining it on adsorbent resins and releasing it as a dedicated eluted stream.
Water extraction, clarification/filtration, column adsorption, washing, desorption/elution and, when needed, downstream concentration or solvent handling.
To protect resins from solids and colloids, reduce fouling, improve cycle repeatability and minimize cleaning downtime.
Defined regeneration/conditioning and CIP sequences restore adsorption capacity and limit fouling, keeping results consistent across campaigns.
Flow rates and volumes, polyphenols content in the extract, turbidity after filtration, targets for purity/colour, campaign frequency, utilities, and safety/effluent constraints.

