A water extraction process for lycopene from tomato waste using a pressurized method: an application of a numerical simulation

What if the tomato waste in your kitchen could yield a valuable compound like lycopene, using nothing but water and pressure? A new simulation shows how.

In an era of soaring consumption and mounting waste, what we throw away often hides surprising value. Grape peels from winemaking, for instance, are packed with bioactive compounds. They can be reused in agriculture, cosmetics, or even as biomass for energy. But extracting those compounds usually demands harsh solvents or heat, which can destroy the very molecules we want.

Enter rapid solid-liquid dynamic extraction (RSLDE), a cyclic pressurization method that works without organic solvents or extreme temperatures. In this study, researchers applied RSLDE to grape peels to pull out polyphenols, then built a numerical simulation to understand what happens during the process. A finite element model tracked how the concentration of extracted substances changes over time, revealing the exchange between the solid matrix and water.

The result? A cleaner, smarter way to recover valuable compounds from waste—no heat, no solvents, just pressure and water. This approach could turn by-products into resources, from food additives to bioenergy, with minimal environmental footprint. The simulation is a key step toward scaling up such green extraction processes.

Key Points

• Grape peel waste is rich in bioactive compounds.
• RSLDE extracts polyphenols without solvents or heat.
• Numerical simulation models extraction dynamics over time.