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australian researchers have developed a new technology to convert waste from brewing into a compound with potential value as a biofuel or drug.
Avinash Karpe
, a PhD student at a Melbourne university, has found a way to break down the residue into fungi to make ethanol and other biofuels. "It has been found that a variety of fungi are able to degrade these wastes into enzymes that convert waste into soluble sugars and then into other products." A series of experiments have confirmed that the wine residue was first heated for
30
minutes, and then four fungi - Hatswood mold, black penicillin, yellow penicillin and orange penicillin - were mixed into a bioreactive device to successfully break down the residue.Australia is the world's sixth-largest wine producer, squeezing
,175
million tonnes of grapes a year for winemaking, with more than half of the grape material eventually becoming bio-waste. Grape residues cannot be used as animal feed because they lack nutritional value and are difficult to digest. It is also not suitable for composting because it is not easy to degrade. With the birth of this new research, this situation is expected to change soon.
