Stem cells as future source for eco-friendly meat

The scientific progress that has made it possible to dream of a future in which faulty organs could be regrown from stem cells also holds potential as an ethical and greener source for meat.

So say scientists who suggest in journal Trends in Biotechnology that every town or village could one day have its very own small-scale, cultured meat factory.

"We believe that cultured meat is part of the future," said Cor van der Weele of Wageningen University in The Netherlands. "Other parts of the future are partly substituting meat with vegetarian products, keeping fewer animals in better circumstances, perhaps eating insects, etc. This discussion is certainly part of the future in that it is part of the search for a 'protein transition.' It is highly effective in stimulating a growing awareness and discussion of the problems of meat production and consumption."

van der Weele and coauthor Johannes Tramper point out that the rising demand for meat around the world is unsustainable in terms of environmental pollution and energy consumption, not to mention the animal suffering associated with factory farming.

In the new Science & Society paper, van der Weele and Tramper outline a potential meat manufacturing process, starting with a vial of cells taken from a cell bank and ending with a pressed cake of minced meat. But there will be challenges when it comes to maintaining a continuous stem cell line and producing cultured meat that's cheaper than meat obtained in the usual way. Most likely, the price of "normal" meat would first have to rise considerably.