Changes

However, it is not economically viable as a fuel: "corn requires 29% more [[fossil energy]] than the fuel produced". [http://www.globalwarminghoax.com/news.php?extend.7]

However, it is not economically viable as a fuel: "corn requires 29% more [[fossil energy]] than the fuel produced". [http://www.globalwarminghoax.com/news.php?extend.7]

==Process==

==Processes==

Ethanol for use in [[alcoholic beverage]]s, and the vast majority of ethanol for use as fuel, is produced by fermentation: when certain species of [[yeast]] (most importantly, ''[[Saccharomyces cerevisiae]]'') [[metabolism|metabolize]] [[saccharide|sugar]] in the absence of [[oxygen]], they produce ethanol and [[carbon dioxide]].  The overall chemical reaction conducted by the yeast may be represented by the chemical equation

Ethanol for use in [[alcoholic beverage]]s, and the vast majority of ethanol for use as fuel, is produced by fermentation: when certain species of [[yeast]] (most importantly, ''[[Saccharomyces cerevisiae]]'') [[metabolism|metabolize]] [[saccharide|sugar]] in the absence of [[oxygen]], they produce ethanol and [[carbon dioxide]].  The overall chemical reaction conducted by the yeast may be represented by the chemical equation

In order to produce ethanol from starchy materials such as [[cereal grain]]s, the starch must first be broken down into sugars.  In brewing [[beer]], this has traditionally been accomplished allowing the grain to germinate, or [[malt]].  In the process of germination, the seed produces [[enzyme]]s that can break its starches into sugars.   

In order to produce ethanol from starchy materials such as [[cereal grain]]s, the starch must first be broken down into sugars.  In brewing [[beer]], this has traditionally been accomplished allowing the grain to germinate, or [[malt]].  In the process of germination, the seed produces [[enzyme]]s that can break its starches into sugars.   

 

==Co-products==

==Co-products==