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

Table 4

Partially methylated alditol acetates ofwater-soluble AL-WSP(3) and chelating-soluble AL-CSP(3) pectins obtained by gas chromatography-mass spectrometer (GC-MS).

Partially methylated; alditol acetates	AL-WSP(3)^a	AL-CSP(3)^a
3,4-Di-methyl-rhamnose	11.6	4.6
3-Methyl-rhamnose	7.1	4.5
Total	18.7	9.1
2,3,5-Tri-methyl-arabinose	23.7	28
2,5-Di-methyl-arabinose	3.6	3.3
2,3-Di-methyl-arabinose	26.7	27.4
2-Methyl-arabinose	12.7	24
3-Methyl-arabinose	4.8	3.7
Total	71.5	86.4
2,3,4,6-Tetra-methyl-galactose	4.8	2.3
2,3,6-Tri-methyl-galactose	4.8	2.1
Total	9.6	4.4

 ^aPercentage of peak area of O-methylalditol acetates relative to total area, determined by GC-MS.