I found this years ago. I saved it; and I advise any home owner who wants to use plastic that it should be a NO NO
Why Wood Cutting Boards are Better than Plastic or Glass
As I mentioned above, we were required to use plastic cutting boards when catering. In Plastic and Wooden Cutting Boards by Dean O. Cliver, Ph.D of UC Davis, they noted that “the U.S. Department of Agriculture told us they had no scientific evidence to support their recommendation that plastic, rather than wooden cutting boards”.
The problem is that while it may seem like plastic is non-porous and can’t absorb liquids, with use the surface becomes knife-scarred. This rough surface is exceptionally difficult to clean, even with bleach or running through the dishwasher. Wood, by contrast, shows the ability to halt the growth of and kill bacteria applied to its surface. Both new and used wooden cutting boards maintain this ability equally well.
In a study conducted at the University of Wisconsin (also by Dr. Cliver), they tested bacteria known to produce food poisoning – Salmonella, Listeria and enterohemorrhagic Escherichia coli. These bacteria were placed on cutting boards made from seven different species of trees and four types of plastic. All the wooden boards consistently outperformed the plastic.
The scientists found that three minutes after contaminating a board that 99.9 percent of the bacteria on wooden boards had died, while none of the bacteria died on plastic. Bacterial numbers actually increased on plastic cutting boards held overnight at room temperature, but the scientists could not recover any bacteria from wooden boards treated the same way.
Dr. Cliver also discusses a case-control study of sporadic salmonellosis in Plastic and Wooden Cutting Boards:
Basically, wood cutting boards kill bacteria. They can’t figure out exactly how, but they know that it’s true. Old or new, wood cutting boards add an extra line of defense to your kitchen. Bamboo may have similar properties, but the only test data I was able to find about antimicrobial properties of bamboo focused on bamboo cloth. Read Bamboo – is it Antimicrobial?
Additionally:
• Wood cutting boards protect your knives and don’t dull them like ceramic or glass cutting boards.
• Wood is completely biodegradable and renewable.
• Wood cutting boards may support small business. Check out your local farmers markets and craft fairs for handmade products.
How to Care for Your Wood Cutting Board
Wash boards after each use in warm, soapy water. If you have chunks of food stuck on the surface, use a knife or kitchen scraper to remove most of it before washing. Do not leave boards to soak! Do not wash wooden cutting boards in the dishwasher. They will absorb water, and this could trash your cutting board. Dry thoroughly before storing. I prefer air drying in the dish rack.
To remove odors, rub down with half a lemon or spritz with some vinegar. This will also help sanitize the board.
Wood cutting boards should be regularly seasoned with a good quality cutting board oil. You can find them in most hardware stores. Mineral oil is typically used, since it does not go rancid. Do not use vegetable oil or olive oil. There are oil blends such as Block Bros. Block Oil that are made with shelf stable edible oils. To season, start with a clean, dry cutting board. Coat entire surface with a layer of oil and rub it in. Let set to absorb in warm, dry area for 12 to 24 hours. Buff to remove any oil that may not have been absorbed. Repeat as needed any time your board starts looking dull.
Keep your knives sharp. Dull knives mean that you have to press harder to cut, which will mark up your board.
Basic Food Safety Applies No Matter Which Type of Cutting Board You Use