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News Link • Science, Medicine and Technology

Plastic from Grass


Nearly all the plastics sold today come from petroleum and aren’t biodegradable. But researchers at Metabolix in Cambridge, Massachusetts, are genetically engineering switchgrass to produce a biodegradable polymer that can be extracted directly from the plant.

That could transform the economics of making biodegradable polymers. Metabolix already sells such a polymer, but it’s produced by bacteria that feed on plant sugars in expensive fermenters. A plant-based process, which could use crops grown on marginal lands, would require less equipment.

Metabolix estimates that it could ultimately sell its plant-based polymers at less than half today’s prices.

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