Color Changing Bacteria Detector

  • A team at Tufts University is working on sensors that could change color to tell you if a bag of lettuce has dangerous bacteria in it. (Photo by Ken Hammond, courtesy of the USDA)

Researchers are working on a tool
that could tell you if your food is safe
to eat before you break open the bag.
Rebecca Williams has more:

Transcript

Researchers are working on a tool
that could tell you if your food is safe
to eat before you break open the bag.
Rebecca Williams has more:

A team at Tufts University is working on sensors that could change color to
tell you if a bag of lettuce has dangerous bacteria in it.

The special ingredient is silk. They boiled silkworm cocoons. And made a
thin silk film out of the proteins. The silk film has color changing properties
– like a butterfly’s wing.

Fio Omenetto is the lead researcher. He says it could be possible to activate
the film so it detects the presence of E. coli. Then the film could be put in a
bag of spinach.

“So immediately by looking at color change you will be able to tell whether
the spinach is good to eat or not.”

Omenetto says this is still pretty futuristic at this point. He says it’ll
probably be at least five years before you might see this at the grocery store.

For The Environment Report, I’m Rebecca Williams.

Related Links

Facebook for Farmers’ Food

  • Bob Gavlak and his partners organize freshly-harvested produce in their cooling truck. (Photo by Julie Grant)

Most twenty year olds use online
networking sites. But most farmers don’t.
Until now. A team of recent college grads
is using their internet savvy to connect
farms and restaurants. Julie Grant reports:

Transcript

Most twenty year olds use online
networking sites. But most farmers don’t.
Until now. A team of recent college grads
is using their internet savvy to connect
farms and restaurants. Julie Grant reports:

Last summer Matt Szugye entered a college business school
competition. His team needed to make a plan for a new
business. They started throwing around ideas.

“It just happened, that the night before I was at a restaurant
talking with an owner, and they were telling me about the
trials and tribulations of starting their restaurant with the idea
that they would serve seasonal, local produce.”

But the restaurant owner couldn’t get food like onions,
zucchini or tomatoes directly from local farms. Szugye’s
team studied the idea. Lots of people in the food business
were saying the same things. Things like this:

“So I’m getting things shipped in from other states.”

That’s Donna Chriszt. She’s the owner and chef at Dish Deli
and Catering. It’s a small, gourmet deli in a downtown
Cleveland neighborhood.

“And the amount of fossil fuels that are coming out of that,
we hated. So, it’s not what I wanted to do for my
community.”

So now that the college team knew there was demand for a
product, they contacted farmers. Eureka. There was also a
supply. Lots of farmers wanted new ways to sell their fruits
and vegetables locally.

The team put together a plan for a distribution business – to
pickup produce from farms and deliver it to nearby
restaurants.

They decided they could use the internet.

It would work a little like an online dating service. Each
farmer could list what’s available and set the price. The
restaurant owners could browse through the list and place
their orders. The college students’ business plan would be
the match-maker.

The team won their business school contest.

After graduation this Spring, they launched an actual
business based on their model.

They call it Fresh Fork.

Donna Chriszt was thrilled.

“I was like hallelujah. Thank God someone will be able to
help a small place like me by doing all the foot work.”

(sound of a factory)

After picking up produce from farmers, Fresh Fork Team
member Bob Gavlak is finally getting back to the distribution
center. It’s 10 p.m. It could have gone a lot sooner, but he
got caught up talking with the farmers about what they’re
growing and how their kids are doing, you know, forging
relationships.

(sound of a cooling truck)

The team now has to move racks of produce in a cooling
truck. Then they organize it all.

“This is where we’re going tomorrow, is Dish Deli and
Catering. And you can see Knoble Farms. They have some
corn.”

When Gavlak and his partners started planning this
business, they didn’t quite get why there was such a fuss
about local food.

They were still college students fueled by Ramen and fast
food.

So they spent some time on the food prep line at an upscale
local restaurant – cutting onions, stirring soup – for hours.
Not pouring soup out of a bag like a lot of places. Gavlak
says he started to understand.

“I would go to the store and I’d have strawberries, and I’d be
like, ‘oh, these are so good’. But then, when we had
strawberries here in the spring and early summer, it’s like I’d
never had a strawberry before. It’s just seeing the difference
that happens between a product that’s fresh and homegrown
and the product that isn’t.”

The team finishes sorting all their fresh produce at midnight.
They’ve got to get up at the crack of dawn to deliver to 8
restaurants, a grocery store, and a hospital.

(sound of Dish Deli)

When Gavlak brings her order, deli owner Donna Chriszt
inspects the cucumbers, rhubarb, and red skin potatoes.

“And our big bushel of corn. And everything looks great. It’s
always exciting when it comes in, because we’re like, ‘what
are we going to do with this?’”

This week, they’re planning rhubarb cobbler, potato salad
and fresh pickles for a neighborhood festival.

Gavlak smiles. He’s says it makes him feel good that the
business he and his college buddies designed, Fresh Fork,
is connecting farms and restaurants and getting people
fresh, locally grown food.

He finishes the order, and then walks into Chriszt’s deli to
have some lunch.

For The Environment Report, I’m Julie Grant.

Related Links

Healthy Employees, Lower Costs

  • The "Great Plate" - a 10-inch plate: half non-starchy vegetables, a quarter lean protein, a quarter starchy vegetable or whole grains (Photo courtesy of the University of Michigan)

Lots of companies are starting new programs
that teach their employees how to eat healthier.
Because healthier employees can save companies loads
of cash. Kyle Norris has more:

Transcript

Lots of companies are starting new programs
that teach their employees how to eat healthier.
Because healthier employees can save companies loads
of cash. Kyle Norris has more:

So, Stacy Witthoff is teaching people about healthy snacks.

“We have some 100 calorie packs. We have fresh fruit like bananas, peaches, pears,
apples, any kind of canned fruit is good too.”

Witthoff is a dietician with the Michigan Healthy Community – basically it’s a group that
does health education for University of Michigan employees.

The people at this expo are learning about how to eat healthier, and the idea is that they’ll
share this info with their co-workers.

Witthoff stands in front of a little booth and she’s all friendly. She snags people as they
walk by.

She’s just caught Jason Maynard. He’s a nursing administrator. And he goes to a lot of
meetings where there are a lot of snacks.

“So at meetings it’s probably donuts or bagels, cookies.”

But he thinks people would go for fresh fruit like raspberries or strawberries, if they were
offered.

Stacy Witthoff is promoting a guide that helps people make better food choices.

It’s called the Great Plate. It’s a picture of a plate that’s divided into different sections.

“Basically you take a 10-inch plate and half of it should be non-starchy vegetables, a
quarter of it lean protein, and a quarter of it starchy vegetable or whole grains. So it’s just
an easier way to eat healthy without having to think about portions.”

Ok let’s recap.

Divide your plate in-half and fill that half with non-starchy veggies – carrots, broccoli,
cauliflower, green beans, asparagus and peppers. And aim for a variety of colors.

Then divide the other half of the plate into quarters. Fill one-quarter with grains &
starchy veggies – that’s things like brown rice and whole-wheat pastas and whole-wheat
bread. And starchy veggies are things like potatoes, corn, peas, and squash.

Then the last quarter of the plate should have meats and proteins. Things like grilled
or baked chicken, fish, turkey, lean cuts of meat. And non-meat options like tofu, beans,
and eggs.

And the Great Plate says go for way smaller serving sizes.

The Great Plate encourages people to eat what they call “whole
foods.” That means eat the food in its raw form and not it’s processed equivalent. So
like eat the apple – as opposed to apple juice. Or as opposed to the apple-flavored gummi
worms, if you were someone like me.

Steve Aldana helps companies start employee healthcare programs. He says that
culturally we eat pretty bad stuff. And that we’re way stressed-out.

And all that can affect an employer’s pocketbook, for real.

“So 2 things: poor behaviors are leading to onset of chronic diseases. And those chronic
diseases are costing an inordinate amount in health care. And it’s that cost alone that’s
driving most companies to start to look very, very intently at worksite wellness
programs.”

Businesses are starting to see healthy employees as a smart investment. Companies like
Johnson & Johnson, IBM, and Dow Chemical have all taken note.

They hope programs like this one will help shave-off millions of dollars from their
employee health care costs.

And these programs can also help save money in the long run – by boosting employee
morale and leading to fewer employee absences.

For The Environment Report, I’m Kyle Norris.

Related Links

Salads Causing Sickness

  • Vegetables in the produce section of a supermarket in VA. (Photo by Ken Hammond, courtesy of the USDA)

During the past 35 years, people have been getting
sick from contaminated produce more often. That’s according
to a recent study from the Centers for Disease Control and
Prevention. Rebecca Williams reports:

Transcript

During the past 35 years, people have been getting
sick from contaminated produce more often. That’s according
to a recent study from the Centers for Disease Control and
Prevention. Rebecca Williams reports:

After hundreds of people got sick from contaminated spinach and
lettuce, researchers started looking back at three decades of disease
cases. They found that people are getting sick from contaminated produce
more often. Bacteria such as E. coli and salmonella are often the cause.

Michael Lynch is one of the study’s authors. He says Americans are eating
more salads, but that doesn’t totally explain why there are more disease
outbreaks.

“We were a little surprised that that didn’t entirely explain the increase
but what else is contributing to that is not clear.”

Lynch says contamination can happen anywhere between the farm and your salad
plate. He says it’s important to thoroughly wash lettuce before eating it.
But he says that might not be enough to avoid getting sick.

He says stronger controls are needed at every step to try to prevent
contamination.

For the Environment Report, I’m Rebecca Williams.

Related Links

A Closer Look at Chinese Organics

  • Produce section of a supermarket in VA. (Photo by Ken Hammond, courtesy of USDA)

More companies are importing organic
products from China and other countries. But
contaminated pet food, tainted toothpaste,
and unauthorized antibiotics in fish have been
imported to the U.S. from China. Now, some people are
concerned about organic foods from China. Julie
Grant reports:

Transcript

More companies are importing organic
products from China and other countries. But
contaminated pet food, tainted toothpaste,
and unauthorized antibiotics in fish have been
imported to the U.S. from China. Now, some people are
concerned about organic foods from China. Julie
Grant reports:

When you see that round USDA organic seal on a carton of
milk, boxed foods, or bananas , it means that on some farm,
somewhere, something like this happened:

(farm inspection sound)

Inspector: “All righty. Anything under the box on the far
right.”

Farmer: “That’s the burnout. Which I haven’t used for 3 or 4
years.”

An inspector walks around looking at the greenhouse, the
barn and the fields, in the greenhouse, and in the barn. He
works for an agency that’s accredited by the USDA to certify
farms as organic. He’s making sure nothing is happening on
the farm that’s prohibited by the National Organic Standards.

But small farms like this one are no longer the norm in
organics. Organic products have become a big business all
around the world.

So people are wondering… who inspects those farms?

(store sound)

Sheila Rombach is a buyer for a small natural foods store.
Like a lot of people, she’s a little nervous about the safety of
food coming from China. Last year’s pet food scare and
poisonous toothpaste are still fresh in many people’s minds.

Rombach’s customers pay a premium for ‘organic’ foods.
She wonders how the USDA can certify that farms all the
way in China are following organic rules.

“I guess it crossed mind because of all the negative publicity
about things manufactured in China. I want to be sure that
the items grown under the organic label are truly organic.”

It’s such a concern that one large health food chain, Trader
Joe’s, is taking all Chinese imports off its shelves. Trader
Joe’s plans to have Chinese garlic, ginger, and all other
single-ingredient foods out of its 300 stores this spring.

But the U.S. Department of Agriculture maintains if it says
organic, it’s truly organic. Barbara Robinson is chief
administrator of the USDA’s National Organic Program. She
says foreign products go through the same process as those
grown here.

“So, if the product is coming from India, or the product is
coming from Australia, and you want to market in the United States – then
you need a certifying agent who is accredited by us.”

Robinson says all certifying agents accredited by the USDA
should be enforcing the same organic rules. If a product has
that little round seal, Robinson says consumers can trust it
meets the U.S.’s National Organic Standards.

But enforcing the rules isn’t always that easy. The USDA is
having difficulty making sure those rules are consistently
applied on U.S. farms. So how can the agency be so
confident about farms in other countries?

One expert on Chinese agriculture and politics says that’s a
good question. Paul Thiers is a political science professor at
Washington State University who’s been visiting farms in
China since the early 1990s.

“There is some difficulty, I think, in expecting people from
outside of China to really get far enough in and understand
what’s going on in political and economic conditions of rural
China.”

Thiers says many Chinese farms are run by the local
government. Others are run by private managers with
peasant farmers working the land.

“In some places, peasant farmers who were purported to be
part of organic production, who were on land that was
certified, couldn’t tell me what organic was, had no
conception of different production standards. And all they
said was, ‘we just sell our product to the government’.”

Thiers says at that time, five or ten years ago, farmers were
probably using chemicals, even though they were selling
food labeled organic.

Thiers expects that China’s organic farming practices are
improving, though. He says people in Chinese cities are becoming
concerned about food safety and want to buy organics. But
the USDA has to rely on organic certifiers in China. And with
the rapid growth of organic farms, no one is sure they’re
actually meeting U.S. standards.

Thiers says there is one consolation. At least organic farms
are inspected by someone. Conventional farms don’t get
those kinds of visits from inspectors.

For The Environment Report, I’m Julie Grant.

Related Links

Mite Zapper Might Help Bees

Beekeepers in the Midwest and elsewhere are turning to innovative ways to protect their hives from tiny, blood-sucking mites. As the Great Lakes Radio Consortium’s Sarah Hulett reports, farmers depend on the health of commercial honeybee colonies:

Transcript

Beekeepers in the Midwest and elsewhere are turning to innovative ways to protect their hives
from tiny, blood-sucking mites. As the Great Lakes Radio Consortium’s Sarah Hulett reports,
farmers depend on the health of commercial honeybee colonies:


Apples, cherries, and cucumbers are among the crops that depend on bees for pollination. But in
the mid-80’s, a parasite called varroa wiped out wild honeybees in the U.S. And the mites have
also taken a toll on commercial colonies as well.


The problem is especially serious in California. Almond growers there have had difficulties in
the last few years getting enough bees to pollinate their half-million acres of almond trees. But
Zachary Huang, a honeybee researcher at Michigan State University, says beekeepers in the
region still have about twice the number of bees needed to meet farmers’ demands.


“It’s not so bad yet that we’re having trouble getting bees to pollinate our fruit trees.”


Chemicals have been developed to kill the mites. But so far, they’ve proved only partly effective,
or the mites become resistant. Huang has patented a device called the “mite zapper” that kills the
parasites in the hives. He hopes to be able to market it to beekeepers next year.


For the Great Lakes Radio Consortium, I’m Sarah Hulett.

Related Links