Table 3. Systematic error for the analysis of matrix polysaccharides and associated with the addition of 12 sample types to a reference starch determination.
| Systematic error/g/100 g | |
| Matrix | |
| Cellulose | −0.015 |
| Pectin | 0.054 |
| Sample | −0.029 |
| Organ | |
| Twig | 0.114 |
| Mature | −0.073 |
| Root | −0.129 |
| Species*Organ | |
| Acer | −0.059 |
| Twig | −0.269 |
| Mature | 0.099 |
| Root | −0.008 |
| Magnolia | 0.214 |
| Twig | 0.403 |
| Mature | 0.451 |
| Root | −0.212 |
| Cedrus | 0.150 |
| Twig | 0.472 |
| Mature | 0.087 |
| Root | −0.110 |
| Pinus | −0.423* |
| Twig | −0.150 |
| Mature | −0.930 |
| Root | −0.188 |
For matrix polysaccharides the error was not significant; n = 7. For different wood types the error was deemed significant in a t-test at p<0.05 (*) only when all Pinus organs were considered together; n = 3. Sample averages all samples. Twig, Mature, and Root average the 4 species. Acer, Magnolia, Cedrus, and Pinus averages the three organs.