Scientists put cancer-fighting power back into frozen broccoli

Share via AddThis
Posted on August 7, 2013
broccoli

broccoli

There was bad news, then good news from University of Illinois broccoli researchers this month. In the first study, they learned that frozen broccoli lacks the ability to form sulforaphane, the cancer-fighting phytochemical in fresh broccoli. But a second study demonstrated how the food industry can act to restore the frozen vegetable’s health benefits.

 

“We discovered a technique that companies can use to make frozen broccoli as nutritious as fresh. That matters because many people choose frozen veggies for their convenience and because they’re less expensive,” said Elizabeth Jeffery, a U of I professor of nutrition.

“Whenever I’ve told people that frozen broccoli may not be as nutritious as fresh broccoli, they look so downcast,” she added.

As little as three to five servings of broccoli a week provides a cancer-protective benefit, but that isn’t true for bags of broccoli that you pluck out of your grocery’s freezer, she noted.

The problem begins when soon-to-be-frozen broccoli is blanched, or heated to high temperatures, to inactivate enzymes that can cause off-colors, tastes, and aromas during the product’s 18-month shelf life, she explained.

The extreme heat destroys the enzyme myrosinase, which is necessary to form sulforaphane, the powerful cancer-preventive compound in broccoli, she said.

Read more at: Phys.org



41,661 science & technology articles

Categories

Our Articles (see all)

General News

Follow us

Facebook   Twitter   Pinterest   StumbleUpon   Plurk
Google+   Tumblr   Delicious   RSS   Newsletter via Email

Featured Video (see all)


Hubble Video Shows Shock Collision inside Black Hole Jet
When you’re blasting though space at more than 98 percent of the speed of light, you may need…

Featured Image (see all)


Orion Windows Undergoing Inspection at Kennedy Space Center
Inside the Neil Armstrong Operations and Checkout Building high bay at NASA’s Kennedy Space Center in Florida, technicians…