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Strategies & Market Trends : 2026 TeoTwawKi ... 2032 Darkest Interregnum -- Ignore unavailable to you. Want to Upgrade?

To: Seeker of Truth who wrote (4611)	3/1/2006 2:58:26 PM
From: Crabbe	Read Replies (1) \| Respond to of 218649

"We don't know how to make ethanol from five carbon sugars. Saying it another way the enzymes we have looked at can't convert five carbon atom sugars into ethanol" It would seem that YOU don't know how to covert xylose and other 5 carbon sugars to ethanol. BTW enzymes convert cellulose and hemicellulose into simple sugars, yeast converts sugars into ethanol. "Iogen specializes in producing ethanol from cellulosic material. A team led by Ho developed the more efficient yeast during the 1980s and 1990s. Conventional yeast can ferment glucose to ethanol, but it cannot ferment xylose. Xylose makes up about 30 percent of the sugar from agricultural residues, and the inability to ferment xylose would represent a major loss of ethanol yield, Ho said. The Purdue researchers altered the genetic structure of the yeast so that it now contains three additional genes that make it possible to simultaneously convert glucose and xylose to ethanol. The ability to ferment xylose increases the yield of ethanol from straw by about 40 percent" news.uns.purdue.edu Would seem that you are a bit behind the subject, and the subject ain't chemistry, it is bio-logy. Molecular biology, ie gene splicing. r