March 15/Chicago/Reuters -- Experts at the Reuters Food and Agriculture Summit in Chicagosaid an estimated 30-50% of the food produced in the world goes uneaten.

The average American throws away 33 pounds of food each month -- about $40 worth -- according to the Natural Resources Defense Council, which plans to publish a report on food waste in April.

In a year, that means each person throws away almost 400 pounds of food, the weight of an adult male gorilla.

The U.S. Department of Agriculture estimates that 23% of eggs and an even higher percentage of produce ends up in the trash.

"We forget we have all these fresh fruits and vegetables, and at the end of the week we have to throw them away," said Esther Gove, a mother of three young children in South Berwick, Maine. "Now, I don't buy as much fresh produce as I used to."

However, the impact of food waste stretches far beyond the kitchen.

Agriculture is the world's largest user of water, a big consumer of energy and chemicals and major emitter of greenhouse gases during production, distribution and landfill decay.

Experts say reducing waste is a simple way to cut stress on the environment while easing pressure on farmers, who will be called on to feed an expected 9 billion people around the world in 2050, versus nearly 7 billion today.

"No matter how sustainable the farming is, if the food's not getting eaten, it's not sustainable, and it's not a good use of our resources," Dana Gunders, a sustainable agriculture specialist at the NRDC, said at the Reuters Summit.

In richer nations, edible fruit and vegetables end up in landfills because they are not pretty enough to meet a retailer's standards, have gone bad in a home refrigerator or were not eaten at a restaurant.

In developing countries, much food spoils before it gets to market due to poor roads and lack of refrigeration.

High food prices are another factor, since some people cannot afford the food that is produced, said Patrick Woodall, research director and senior policy advocate for Food and Water Watch.

"It's not a situation where you have to massively ramp up production," Woodall told the Reuters Summit. "Even in 2008, when there were hunger riots around the world, there was enough food to feed people, it was just too expensive."

DuPont is working with farmers in Kenya to extend the life of raw milk. Often farmers have to travel up to 20 kilometers to get their milk to market, and due to the country's high temperatures, much of the milk gets wasted, Jim Borel, an executive vice president with DuPont, said.

"This has broad application, but we're focused on Africa right now," Borel said.

Europe is a leader in tackling food waste, but the U.S. is catching on as producers, facing tepid sales growth, look to control costs.

For example, a General Mills pizza plant found a way to use heat to make toppings stick to frozen pizzas better. The system is expected to prevent thousands of pounds of cheese and other pizza toppings from going to waste each year.

The U.S. Environmental Protection Agency said 33 million tons of food waste hit landfills and incinerators in 2010, the largest solid waste product in the system. EPA has launched a program to address the issue.

Experts from EPA and other groups have floated a variety of recommended fixes. They say clarifying "sell by" and "use by" dates could help consumers avoid throwing food in the garbage too soon. Some food could be "rescued" and used in soup kitchens, while certain leftovers could be used as animal feed.

Increasing composting could boost soil health and drought resistance, while also easing the burden on landfills and reducing decomposition of garbage into greenhouse gas methane.

 From the March 16, 2012, Prepared Foods' Daily News.