Table I.
Content and size of the natural rubber in fig tree, F. elastica, and rubber tree
| Sample | Rubbera | Molecular Mass |
|---|---|---|
| % | kD | |
| Fig tree | ||
| Latex | 4.10 ± 0.35 | 190 |
| Bark | 0.35 ± 0.10 | |
| Leaf | 0.15 ± 0.05 | |
| Fruit | 0.10 ± 0.04 | |
| F. elastica | ||
| Latex | 6.08 ± 2.60 | 590 |
| Rubber tree | ||
| Latex | 32.10 ± 0.65 | 1,500 |
Rubbers were extracted by successive acetone-benzene extraction method, and molecular mass of the rubber was determined by a gel-permeation chromatography analysis.
a
All values are averages based on four determinations. Percentage in the latex is weight rubber in volume of latex, and percentage in bark, leaf, and fruit is per dry wt sample.