Biofuel comes from beef intestines

US scientists have searched in the cow's gut that enzymes that make enzymes can break down hay into absorbable products.

Bacterial samples are taken directly from the rumen - the grass's fermentation and decomposition agency.

That bacterium can create enzymes that break down the most 'stubborn' fiber in US millet (switchgrass).

The US millet was once considered an effective alternative to corn, which can be grown in places where food crops cannot be grown. However, it is difficult to decompose.

Companies that produce ethanol will generate about 13 billion gallons of biofuels this year, mostly from corn. The goal by 2022 is 36 billion gallons per year and 21 billion gallons of reusable biofuels - this 'premium' fuel has been spent US $ 1.5 billion in October last year for commercialization.

The largest biofuel producer in the US holds monopoly in producing this new generation of fuels. Danish enzyme producers including Novozymes, Archer Daniels Midland Co and Valero Energy Group are also leading producers.