Academic Paper Says Edible Meat Can be Grown in a Lab on Industrial Scale

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August 16, 2005 Experiments for NASA space missions have shown that small amounts of edible meat can be created in a lab. But the technology that could grow chicken nuggets without the chicken, on a large scale, may not be just a science fiction fantasy. In a recent paper in the Tissue Engineering journal, a team of scientists has proposed two new techniques of tissue engineering that may one day lead to affordable production of in vitro - lab grown - meat for human consumption. It is the first peer-reviewed discussion of the prospects for industrial production of cultured meat. "There would be a lot of benefits from cultured meat," says University of Maryland doctoral student Jason Matheny, who studies agricultural economics and public health. "For one thing, you could control the nutrients. For example, most meats are high in the fatty acid Omega 6, which can cause high cholesterol and other health problems. With in vitro meat, you could replace that with Omega 3, which is a healthy fat.

"Cultured meat could also reduce the pollution that results from raising livestock, and you wouldn't need the drugs that are used on animals raised for meat."

Prime Without the Rib

The idea of culturing meat is to create an edible product that tastes like cuts of beef, poultry, pork, lamb or fish and has the nutrients and texture of meat.

Scientists know that a single muscle cell from a cow or chicken can be isolated and divided into thousands of new muscle cells. Experiments with fish tissue have created small amounts of in vitro meat in NASA experiments researching potential food products for long-term space travel, where storage is a problem.

"But that was a single experiment and was geared toward a special situation - space travel," says Matheny. "We need a different approach for large scale production."

Matheny's team developed ideas for two techniques that have potential for large scale meat production. One is to grow the cells in large flat sheets on thin membranes. The sheets of meat would be grown and stretched, then removed from the membranes and stacked on top of one another to increase thickness.

The other method would be to grow the muscle cells on small three-dimensional beads that stretch with small changes in temperature. The mature cells could then be harvested and turned into a processed meat, like nuggets or hamburgers.

Treadmill Meat

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