Wednesday, August 29, 2007

Fungus Makes Biodiesel Indian Researcher's Finding

Ravichandra Potumarthi, a researcher in India, has demonstrated and presented his findings at a conference (the International Conference on Bioengineering and Nanotechnology) that using the enzyme lipase as the catalyst he can convert vegetable oils into biodiesel. The trouble, of course, with that, conceptually, is that lipase is a complex protein, difficult and expensive to synthesize. Naturally it would not be a significant breakthrough if Ravichandra did not start thinking "outside the box", so to speak. He saw no reason to go to the trouble of refining the enzyme to a pure form, he simply found an organism that produces plenty of it, and tossed it into the mix. The main advantage here is that you don't have to heat the oil at all for the process to work as in (many, if not most) of the more conventional methods of using methanol (or ethanol) and sodium hydroxide. The mechanism Ravichandra chose was a simple fungus called Metarhizium anisopliae. Interestingly this particular fungus is not all that difficult to obtain at the moment, because it is being investigated as a means to control malaria carrying mosquitoes.(op.cit. Wikipedia.org) It is also already being used as a means to destroy thrips (nasty little things that curl the leaves of citrus trees -- we have an infestation of these in our own back yard), grasshoppers and termites.

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