I use coconut oil on my wood handled kitchen knives and cutting boards.
excerpt from -
http://healthimpactnews.com/2013/how...utting-boards/
"Wooden cutting boards need to be conditioned between uses and one of the most common oil that is used is mineral oil. Now, if youre like me, you will want to avoid mineral oil (even food grade), as it is a petroleum product, which can create a wide variety of health issues. Not something that I want to be exposing my food to. While you could use almost any oil to condition your cutting boards, it is wise to steer clear of olive and vegetable oils, as well as nut and seed oils, as they go rancid very quickly yet something else you dont want to expose your food to. My oil of choice? Coconut oil, of course!
Coconut oil has natural antimocrobial properties, making it a potent germ killer. Many people are afraid of using wooden cutting boards because they fear they cannot be sanitized properly to prevent illness (I was one of those people, believe it or not!), however, I have since learned that when properly cleaned and maintained, wooden cutting boards are perfectly safe. The antiviral, antibacterial, and antifungal properties of coconut oil come from the medium chain fatty acids/triglycerides (MCTs) found in this oil. Lauric acid is the most predominant MCT found in coconut oil and it packs a strong antimicrobial punch. Research has shown that microorganisms that are inactivated by coconut oil include bacteria, yeast, fungi, and enveloped viruses. All of this makes coconut oil a fantastic oil to use to treat and condition your wooden cutting boards and chopping blocks. In addition, wood itself, has been shown to have natural antimicrobial properties, so paired with the strength of coconut oil, there is very little to worry about in the way of germs."