Table 2.

Physico-chemical characteristics of feed, permeate, and retentate samples obtained in the treatment of OMSW aqueous extracts with the MF membrane.

Parameters	Feed	Permeate	Retentate
Total suspended solids (%)	5.4 ± 0.2	n.d.	8.6 ± 0.62
Total polyphenols (mg GAE/L)	1812.4 ± 12.6	1672.2 ± 22.6	2046.0 ± 18.6
Flavanols (mg/L quercetin)	190.4 ± 14.8	180.2 ± 11.3	205.1 ± 12.9
Hydroxycinnamic acid derivatives (mg/L caffeic acid)	180.2 ± 4.6	168.1 ± 10.4	210.2 ± 3.6
TAA (mM Trolox)	11.2 ± 1.4	11.0 ± 0.6	12.3 ± 1.2