Imagine biting into a juicy burger that was produced without killing any animals. Meat
grown in a laboratory from cultured cells is turning that vision into a reality.
Several start-ups are developing lab-grown beef, pork, poultry and seafood—among
them Mosa Meat, Memphis Meats, SuperMeat and Finless Foods. And the field is
attracting millions in funding. In 2017, for instance, Memphis Meats took in $17 million
from sources that included the agricultural company Cargill and Bill Gates.
Lab-grown meat, also called clean meat, is made by first taking a muscle sample from
an animal. Technicians then collect stem cells from that tissue, multiply them
dramatically and allow them to differentiate into primitive fibers that bulk up to form
muscle tissue. Mosa Meat says that one tissue sample from one cow can yield enough
muscle tissue to make 80,000 quarter-pounders!
“Since we all like animals, but we also like to eat meat,” Luke MacQueen, a tissue
engineer at Harvard University in Cambridge, Mass. says “this would move the process
outside of the animals and scientists could grow only the meat parts they want.”
So far attempts at lab-grown meat haven’t managed to match the texture of the animal
muscles eaten as meat. Scientists have been working to coax cells to organize into
something like the fibrous meat that ends up on our plates. One new development does
this using a technique akin to spinning cotton candy, except that it uses gelatin instead
of melted sugar. This process grows meat with more structure.
MacQueen claims that the lab-grown samples all look like natural meats. By controlling
how the gelatin fibers are spun, scientists can set the fibers’ alignment and spacing to
determine if the tissue ends up more like a burger or a steak.
While we might not like thinking of our food as something that’s made out of chemicals,
many popular foods from organic apples to Twinkies are actually the product of
amazing biotechnology. So whether we like the idea or not, lab-grown meat is predicted
to be in our favorite grocery stores and restaurants in the next few years.
Imagine...you’ll be able to have your burger and eat it too!
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