Japanese studies have found that the starch content of straw is proportional to the output of biofuels.
According to a report by Japan’s Kyodo News Agency on June 18, a research team at the Kobe University and the Institute of Physical Chemistry Research Center (located in Yokohama City) conducted an analytical investigation of the composition of 13 straws, and in the 17th American Online Science Journal. PLOS ONE published research results, saying that the more starch contained in straw as a raw material for biofuels, the more fuel it produces.
Straw has attracted attention as a biofuel source for non-food raw materials. "The use of varieties with more starch content can effectively generate more fuel," said Tsumura Hiroshi, a researcher at the Kobe University Graduate School of Engineering Science.
The production of biofuels from straw requires the addition of dilute sulfuric acid to break it down into sugars, and fermentation by microorganisms is also required. The more glucose produced at this time, the more biofuels are produced.
The research team investigated the changes in 47 components of the 13 types of straw before and after the addition of dilute sulfuric acid. It was later found that the varieties with the most starch content were three times more common per liter of glucose than the ones with the least amount.
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