Isolation, Structural Characterization, and Valorization of Pectic Substances from Algerian Argan Tree Leaves (Argania spinosa (L.) Skeels)

Table 2

Mass yield of water-soluble AL-WSP and chelating-soluble AL-CSP pectins obtained by ion exchange chromatography.

Elution solution	Fraction^a
	AL-WSP	AL-CSP
(1) Buffer	17.5	7.5
(2) Buffer + 0.125 M NaCl	5	6.5
(3) Buffer + 0.25 M NaCl	23	16.5
(4) Buffer + 0.5 M NaCl	10.5	13
(5) Buffer + 1 M NaCl	3.5	6
Total	59.5	49.3

Buffer: phosphate buffer (0.05 M, pH 6.3); ^aexpressed as % of 400 mg AL-WSP and AL-CSP; CSP: chelating-soluble pectin; WSP: water-soluble pectin; AL: argan tree leaves.