Table 3. Estimated Isotherm Parameters for trans-Resveratrol onto the XAD and the RENSA Resins, Using Different Water/Ethanol Solutions^a.

	ethanol %
	0%	10%	20%	35%	0%	10%	20%	35%
	XAD-7HP				XAD-16
Qmax (mg·gwet–1)	11.3 ± 0.5	21 ± 2	-	-	17.7 ± 0.8	23 ± 2	-	-
KL (L·mg–1)	0.53 ± 0.03	0.08 ± 0.01	-	-	0.53 ± 0.03	0.09 ± 0.01	-	-
K (L·gwet–1)	-	-	0.129 ± 0.006	0.055 ± 0.003	-	.	0.369 ± 0.007	0.017 ± 0.003
	RENSA PY				RENSA PX
Qmax (mg·gwet–1)	58 ± 3	-	58 ± 3	58 ± 3	80 ± 5	-	80 ± 5	80 ± 5
KL (L·mg–1)	0.49 ± 0.04	-	0.0061 ± 0.0007	0.0012 ± 0.0001	0.26 ± 0.02	-	0.019 ± 0.003	0.0073 ± 0.0006

^aWhen the parameter K is indicated, the linear isotherm was used. Otherwise, the Langmuir model was applied.