“Cellulosic ethanol” would use non-food plants such as switchgrass, which is one of the most promising bioenergy crops. But, while advances have been made, it’s still not economically viable.
The researchers didn’t come up with the magic mix of enzymes that will most efficiently break down switchgrass and other non-food plants. But they — and the two cows that served as their labs — did do what hundreds of scientists had earlier failed at: narrowing the seemingly endless number of enzyme combinations.
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