Description
Pressurized liquid extraction (PLE) uses high pressure to keep liquid solvents above their boiling point, enabling elevated temperatures that increase solvent density and polarity.
Technical
By maintaining water or aqueous ethanol under 10–20 MPa, PLE elevates the solvent temperature to 100–200 °C while keeping it liquid, which enhances the solubility of catechins and epigallocatechin‑3‑gallate. The increased density and polarity improve mass transfer, allowing rapid extraction of tea polyphenols with higher yields than conventional hot‑water methods.
Science
Primary Reaction
Extraction of catechins and epigallocatechin‑3‑gallate from tea leaves
Sensory Profile
Aroma ()
greenherbalfreshcitrusearthy
Origin & History
Civilization
University of Illinois researchers
Era