Next-generation GMOs: Pink pineapples and purple tomatoes

With recent government approval of potatoes that don't bruise and apples that don't brown, a new generation of genetically modified foods is headed to grocery shelves. 

What could be next? Cancer-fighting pink pineapples, heart-healthy purple tomatoes and less fatty vegetable oils, among other products, could receive government approval in the coming years.

The companies and scientists that have created these foods are hoping that customers will be attracted to the health benefits and convenience and overlook any concerns about genetic engineering.

"I think once people see more of the benefits they will become more accepting of the technology," says Michael Firko, who oversees the Agriculture Department's regulation of genetically modified organisms, or GMOs.

Critics aren't so sure. They say there should be more thorough regulation of modified foods, which are grown from seeds engineered in labs. The Agriculture Department has the authority only to oversee plant health relative to GMOs, and seeking Food and Drug Administration's safety approval is generally voluntary.

"Many of these things can be done through traditional breeding," says Doug Gurian-Sherman of the advocacy group Center for Food Safety. "There needs to be skepticism."