Sugarcane may be used to power future cars'
The modified sugarcane plants also produce more sugar, which could be used for ethanol production, researchers said.
Sugarcane can be genetically engineered to produce oil in its
leaves and stems for biodiesel production, scientists, including one of
Indian origin, have found.
The modified sugarcane plants also produce more sugar, which could be used for ethanol production, researchers said.
The
dual-purpose bio energy crops are predicted to be more than five times
more profitable per acre than soybeans and two times more profitable than corn, they said.
Using a juicer, researchers led by the
University of Illinois in the US extracted about 90 per cent of the
sugar and 60 per cent of the oil from the plant.
The juice was
fermented to produce ethanol and later treated with organic solvents to
recover the oil.
The team has patented the method used to separate the
oil and sugar.
They recovered 0.5 and 0.8 percent oil from two of
the modified sugarcane lines, which is 67 per cent and 167 per cent more
oil than unmodified sugarcane, respectively.
"The oil composition
is comparable to that obtained from other feed stocks like seaweed or
algae that are being engineered to produce oil," said Vijay Singh,
Director of the Integrated Bioprocessing Research Laboratory at
Illinois.
"We expected that as oil production increased, sugar
production would decrease, based on our computer models," said Stephen
Long, Professor at Illinois.
"However, we found that the plant can
produce more oil without loss of sugar production, which means our
plants may ultimately be even more productive than we originally
anticipated," Long said.
Long leads the research project Plants Engineered to Replace Oil in Sugarcane and Sweet Sorghum (PETROSS).
To
date, PETROSS has engineered sugarcane with 13 per cent oil, eight per
cent of which is the oil that can be converted into biodiesel.
According
to the project's economic analyses, plants with just five per cent oil
would produce an extra 123 gallons of biodiesel per acre than soybeans
and 350 more gallons of ethanol per acre than corn.
The research was published in the journal Biocatalysis and Agricultural Biotechnology
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