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I found this very interesting.

Elaine (Montreal)



Carry-out containers from wheat? Yes!
September 3, 2004
ARS News Service
Agricultural Research Service, USDA
Lightweight, biodegradable containers for taking home your fast-food meal or leftovers from your restaurant dinner can be made with wheat starch, ARS scientists have shown. So, too, can cups, bowls and plates. Here's the
plus: Because they're biodegradable, all of these foodservice items offer a more environmentally friendly option than today's petroleum-based, polystyrene foam products.
Plant physiologist Gregory M. Glenn of the ARS Western Regional Research Center in Albany, Calif., is working with EarthShell Corp., the Santa Barbara, Calif., innovator of potato-starch-based foodservice products, to fin
e-tune manufacturing of the wheat-starch disposables.
Glenn's research has proven that the biodegradable products are just as attractive, sturdy, convenient to use and leakproof as their polystyrene counterparts. But, because they biodegrade easily, the starch-based disposab
les lessen the burden on America's already overstuffed landfills.
Having a selection of different starches--such as wheat, potato or corn--to choose from gives manufacturers of biodegradable products some purchasing flexibility. That flexibility can help them keep their prices competiti
ve with polystyrene items.
The wheat-based containers can be made in presses or molds that work something like a giant waffle iron. The process begins with pouring the wheat-starch batter onto the heated mol
       d,whichisthenclosedandlocked.Moistureinthebattergeneratessteamthat,inturn,causesthebattertofoam,expand,andfillthemold.Thesteamisventedand,whenthe'baking'isfinished,themoldisopened,theproductisremovedandthecyclestar
tsagain.
The entire process takes less than a minute. A water-resistant film, added later, helps the container keep its strength and shape.
Glenn's research is described in the September issue of Agricultural Research magazine, available online at:
http://www.ars.usda.gov/is/AR/archive/sep04/wheat0904.htm
ARS is the U.S. Department of Agriculture's chief scientific research agency.
Glenn and colleague William J. Orts, also of the Western Regional Research Center, recently won a USDA Honor Award--one of the department's highest honors--for their innovative research with biodegradable packaging.

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