In order to clarify the discrepancy between tapped sap
and the methanol extracts, and to evaluate the sap of the
felled palm trunks as a source for sugars, we investigated
the amount and composition of sugars in the sap squeezed
from felled trunks together with moisture contents. We also
examined effects of storage of the felled trunks on sugars
in the sap. This is the first report that described the
amount, composition and change of sugars contained in
the sap of felled oil palm trunks. The results clearly show
a significant increase of fermentable sugars in the oil palm
sap occurs during storage of the trunks after logging, indicating
the old and felled oil palm trunks are the promising
feedstock for bioethanol.