Skip to main content

Table 4 Kinetic parameters for SFE of lees from pisco-making

From: Supercritical fluid extraction of polyphenols from lees: overall extraction curve, kinetic data and composition of the extracts

Parameter 20 MPa 35 MPa
t CER (h) 0.90 ± 0.01 0.71 ± 0.01
t FER (h) 3.22 ± 0.03 3.2 ± 0.1
M CER (10−8 kg extract/s) 16 ± 2 10 ± 1
Y CER (10−4 kg extract/kg solvent) 12.5 ± 0.1 8.0 ± 0.3
R CER (%, d.b.) 3.9 ± 0.4 1.9 ± 0.2
R TOTAL (%, d.b.) 10.5 ± 0.4 7.5 ± 0.2
  1. t CER duration of the constant extraction rate (CER) period, t FER duration of the falling extraction rate (FER) period, M CER mass transfer rate at t CER, Y CER solute mass ratio in the supercritical phase at the exit of the extractor at t CER, R CER extraction yield at t CER, R TOTAL global yield of the process