On completion of all the fermentations with henequen juice and
molasses, the contents of residual soluble solids were similar at the
end of the fermentations indicating that the contribution of the
sugars is less important to this variable than other soluble matter
present in the juice. For reducing sugars, an interesting phenomenon
was observed. As shown in Tables 2 and 3, when the henequen
juice was more concentrated (10 Bx complemented with molasses
up to 12 Bx), the presence of 50% or more of the yeast Cicy-Ki
caused a drop in the ethanol production, although the consumption
of reducing sugars was the same. This would suggest that
the sugars are being used by the Cicy-Ki in other metabolic pathways
than ethanol production.