Clearly from the figure, economic allocation assigns a major
portion of GHG emissions to sugar, largely leaving aside its coproduct
molasses: 90.1% versus 9.9% and 94.7% versus 5.3% under
the condition with and without the effect of ethanol demand (i.e.
after and before the promotion of molasses for ethanol), respectively.
It is not surprising since molasses has, in any case, little economic
value compared to sugar as a food product for human
consumption. In the context of oil price hikes, molasses has found
a new use as a feedstock for ethanol, but even so, its value still represents
only 26% of that of sugar