
Inspired by another blog on reusable bags, I decided I want to have my own. Blog entry on reusable bags, that is. But I want to explore the safety side of it.
I use reusable bags. I keep them in the trunk of my car so that they are handy when I go (unexpectedly) grocery shopping. And when I come home, I put my groceries away and put the bags by the door so that I don't forget to put them back into my trunk in the morning. My system works really well.
I realize, though, that I don't have a separate bag for meat, and I haven't washed my bags in a while... or did I ever? But I put my meat in those see through bags (yes, those plastic ones) available in the produce section, before I put it into my reusable bag. I need to separate my meat from my bread.
But what about my veggies? I try to cut down on using those see through plastic bags for my tomatoes and my zucchini, because they land in my garbage can as soon as I get home and unpack my groceries. So if I don't have to, I don't use them. My veggies land in my reusable shopping bag unpacked, bare, naked. I wonder how much bacteria lives in my bags because of that.
Environment and Plastic Industry Council comes to the rescue. In 2009 they sponsored a study that was set to measure and identify what lives and grows on an average reusable bag. Gross, I know. They also prepared a report. National Post had an article on the report deeming the bags unsafe.
So here is what they did. They tested 25 bags for E.coli, Salmonella, mold and yeast. And although they didn't find E. coli or Salmonella, they found yeast and mold, and some other bacteria than the two mentioned above.
So, 7 bags had an elevated count of bacteria (above the safe level of bacteria in drinking water), 5 had yeast growing on them, and 5 had some fluffy microscopic growth of mold. Three of the bags tested had considerably high levels of intestinal or faecal bacteria (more than considered safe). All three have been used for long periods of time without being washed, one bag for over a year, and one for over two years. The study report is trying to scare me that if I put a head of lettuce into such a bag, the bacteria from the bag can transfer onto the droplets of water sitting on my lettuce. These droplets of water, then, would have such high levels of bacteria, that it would be considered unsafe to drink.
One thing strikes me though. At the top of the report appears the goal of the research:
"to determine if reusable grocery bags provide a potential breeding ground for bacteria, mold and yeast. If so, a second task would be to analyze whether these bags pose a potential public health risk."
I'm asking: really? Is that the primary concern for Environment and Plastic Industry Council? Or is it the survival of plastic industry?
Well...
Three lessons learned:
1. Wash my fruits and vegetables, very carefully.
2. Get fabric reusable bags and wash them in the washer in hot water.
3. Don't believe what you read in newspapers, look up the source, read for yourself, don't let journalists interpret the results for you.
I'm gonna stick with my reusable bags.
Sources:
The Report:
http://www.plastics.ca/_files/file.php?fileid=itemXwjsKddvYz&filename=file_A_Microbiological_Study_of_Reusable_Grocery_Bags_May20_09.pdf
National Post Article:
http://network.nationalpost.com/np/blogs/theappetizer/archive/2009/05/20/back-to-plastic-reusable-grocery-bags-may-pose-public-health-risk.aspx




