Procter & Gamble Co. has inked a deal with cellulosic ethanol start-up ZeaChem Inc to convert plant material and other biomass used for ethanol into chemicals for household products and packaging.  The multiyear joint development agreement between the world's largest household products maker and the biofuel company is keyed to a trend among top consumer products players to try to make packaging more environmentally friendly, and thus more appealing to consumers.
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