Table 1 Monosaccharide composition (mol%) by linkage type of SiPima 280 mature cotton fibre cell wall fractions
Monosaccharide | Deduced linkage* | Total unfractionated walls (AIR) | CDTA (2.2%) | Na2CO3 (2.0%) | 1 mol·L–1 KOH (1.0%) | 4 mol·L–1 KOH (0.9%) | Insoluble residue (90.8%) |
|---|---|---|---|---|---|---|---|
Fuc(p) | Terminal | 0.1 | 0.1 | 0.1 | – | 1.0 | – |
Rha(p) | Terminal | tr | 1.6 | 1.7 | 0.2 | – | – |
1,2- | 0.1 | 0.8 | 0.5 | 0.3 | 0.3 | – | |
1,2,4- | 0.1 | 0.6 | 0.5 | 0.4 | 0.3 | – | |
Ara(f) | Terminal | 0.5 | 18.2 | 6.9 | 14.2 | 6.7 | – |
1,2- | 0.1 | 1.5 | 0.5 | 0.2 | – | – | |
1,3- | tr | 0.4 | 0.3 | 0.2 | tr | – | |
1,5- | 0.3 | 8.7 | 3.6 | 1.0 | 0.6 | – | |
1,2,5- | – | 0.2 | 0.2 | – | 0.2 | – | |
Ara(p) | Terminal | – | 0.3 | 0.1 | 0.1 | 0.3 | – |
1,2- | – | 0.1 | 0.1 | – | – | – | |
Xyl(p) | Terminal | 0.3 | 0.3 | 0.8 | 0.6 | 10.7 | – |
1,2- | 0.1 | – | – | – | 4.2 | – | |
1,4- | 0.6 | 0.2 | 1.6 | 9.3 | 8.6 | 0.2 | |
1,2,4- | 0.3 | – | – | 18.1 | 8.3 | – | |
1,2,3,4- | 0.1 | – | – | 0.2 | – | – | |
Man(p) | 1,4- | 1.2 | 0.5 | 2.8 | 0.5 | 0.9 | 0.4 |
1,4,6- | 0.3 | 0.6 | 0.5 | 0.1 | 0.5 | – | |
Gal(p) | Terminal | 0.4 | 4.6 | 1.9 | 0.1 | 2.4 | – |
1,2- | – | – | – | – | 1.8 | – | |
1,3- | 0.1 | 2.5 | 1.1 | 0.2 | 0.1 | – | |
1,4- | 0.1 | 0.6 | 0.4 | 0.6 | 0.5 | – | |
1,6- | 0.1 | 4.2 | 1.8 | 0.2 | 0.1 | – | |
1,2,4- | – | 0.1 | 0.2 | – | – | – | |
1,3,4- | – | 0.1 | – | – | tr | – | |
1,3,6- | 0.4 | 11.4 | 4.3 | 0.5 | 0.2 | – | |
1,4,6- | – | 0.2 | 0.4 | – | – | – | |
1,3,4,6- | – | 0.1 | – | – | – | – | |
Glc(p) | Terminal | 0.3 | 0.9 | 2.2 | 1.9 | – | 1.2 |
1,2- | – | 0.3 | 0.7 | 0.2 | 0.2 | – | |
1,3- | 0.5 | 1.2 | 7.3 | 15.6 | 0.3 | – | |
1,4- | 85.9 | 2.1 | 35.5 | 15.1 | 26.1 | 94.8 | |
1,2,3- | – | – | – | 0.1 | – | – | |
1,2,4- | 1.2 | – | – | 0.1 | 0.1 | 1.0 | |
1,3,4- | 1.3 | – | 0.5 | 0.1 | 0.2 | 0.8 | |
1,3,6- | – | tr | 0.3 | 0.5 | – | – | |
1,4,6- | 2.4 | 0.1 | 0.9 | 0.3 | 11.2 | 1.5 | |
1,2,4,6- | 0.3 | – | – | – | – | – | |
1,3,4,6- | 0.5 | – | – | 0.1 | – | 0.1 | |
1,2,3,4,6- | 0.9 | – | – | – | – | – | |
GalA(p) | Terminal | tr | 0.8 | 1.0 | 0.7 | – | – |
1,4- | 1.2 | 31.2 | 18.8 | 1.7 | 4.1 | – | |
1,2,4- | – | 0.2 | 0.2 | – | – | – | |
1,3,4- | – | 0.3 | 0.2 | – | – | – | |
GlcA(p) | Terminal | 0.3 | 2.6 | 2.2 | 16.9 | 9.9 | – |
1,4- | – | 2.6 | – | – | – | – |