Tomatoes are posing a problem for a BPA-free lining - they are so acidic they can eat through it (Photo by Scott Bauer, courtesy of the USDA)
More than a hundred studies have linked a chemical in plastic to health problems. Things like breast cancer, prostate cancer, diabetes, and early puberty. This chemical, bisphenol-A or BPA, is used to coat the inside of baby formula cans and almost all food and soda cans. Rebecca Williams visits one company that’s found a safer can:
Transcript
More than a hundred studies have linked a chemical in plastic to health problems. Things like breast cancer, prostate cancer, diabetes, and early puberty. This chemical, bisphenol-A or BPA, is used to coat the inside of baby formula cans and almost all food and soda cans. Rebecca Williams visits one company that’s found a safer can:
(sound of forklift backing up, pumpkin seeds pouring out of roaster)
It’s pumpkin seed roasting day at Eden Foods. It’s a natural foods company based in Michigan. It sells things like rice, canned beans, and all kinds of packaged fruits and sauces.
Michael Potter is the company’s president. More than a decade ago, he came across some news reports out of Europe.
“And I learned all the can linings in the USA were lined with this lining that leaches BPA into foods from the can.”
That got him thinking, and researching. Then he started badgering his can manufacturers.
“We virtually begged them to provide us an alternative. We persisted in hounding them and eventually the Ball Corporation said they’d make a can with an old lining they used to make.”
The lining’s made from a plant resin instead of the epoxy resin with BPA. The thing was, it would cost Eden Foods 14 percent more – that’s about 2 cents a can.
But Michael Potter says he had to make the switch.
“We’re selling this not only to people that we don’t know, in the market, we’re feeding it to our children, our grandchildren and ourselves – we didn’t want to eat bisphenol A.”
But there was one problem. He couldn’t make the switch for canned tomatoes.
Tomatoes are acidic, and they can eat through the plant resin can lining. That could lead to bacteria or rust getting into the food.
“There is no alternative for high acid foods other than bisphenol-A lining at this point. We are urging, nudging, demanding a bisphenol-A free alternative. And we’re optimistic we’ll end up with one.”
But the metal can industry says those alternatives just don’t exist right now.
John Rost is with the North American Metal Packaging Alliance. He says the industry is trying to find new materials. But he says shoppers shouldn’t worry about eating canned food.
“The levels of BPA that are coming from epoxy can linings are exceedingly low. We’re talking low parts per billion. That level has been deemed safe by the European Food Safety Authority, Health Canada and the US FDA.”
That’s true, but Health Canada has declared BPA toxic. It’s making moves to limit its use.
A number of independent scientists debate that there’s any safe level of BPA.
Maricel Maffini studies BPA at Tufts University School of Medicine. She says they’ve seen harmful effects on lab animals at the same very low levels of BPA that are leaching into our food from cans.
She says that’s because BPA acts like the hormone estrogen.
“You just need a tiny little signal to trigger an effect. So I think it’s unfair to say there is a safe dose because as scientists we cannot say that yet. We have not found a dose that is low enough where we don’t see effects.”
She says babies and kids are the most at risk. She says BPA has caused lasting damage in lab animals when the animals were exposed to the chemical both before and after birth.
“I think we should be concerned, I think we should limit our consumption of canned foods especially if you are pregnant or if you have babies.”
It’s possible that US can makers will be forced to stop using BPA. Leaders in Congress have introduced bills that could soon ban BPA in all food and beverage containers.
For The Environment Report, I’m Rebecca Williams.