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

Table 1

Monosaccharide yield and composition of water-soluble AL-WSP and chelating-soluble AL-CSP pectins obtained by gas chromatography (GC).

Fraction	Yield^a	UA^b	Sugar composition^c
			Rha	Fuc	Ara	Xyl	Man	Gal	Glc
AL-WSP	6.5	38.5	9	—	28	1	0.5	11	50.5
AL-CSP	7	21.5	6	4.5	74.5	1.5	—	6.5	7

 ^aExpressed as % of 15 g starting leaf powder (dry weight); ^bexpressed as relative weight percentages; ^cpercentage of peak area relative to total peak areas, determined by GC; UA: uronic acid; Rha: rhamnose; Ara: arabinose; Xyl: xylose; Glc: glucose; Gal: galactose; Man: mannose; Fuc: fucose; CSP: chelating-soluble pectin; WSP: water-soluble pectin; AL: argan tree leaves.