Bread itself is not known for having a long shelf life, especially when it is left out on a counter, shelf, or other open-aired compartment. It is not usually mold that is the first concern, but staleness. Generally speaking, however, whole wheat bread will mold faster than white bread. Depending on the brand you are using or the age at purchase, these results may differ. It all depends on the type of preservatives used in either case and different manufacturers use different kinds and amounts of preservation techniques.
However, should we run an experiment where two loaves of bread are baked and then put side by side one another and allowed to mold, the wheat bread should mold faster than the white bread. This has a lot to do with the way these two different kinds of bread are made. Essentially, whole wheat bread is made 'more naturally', hence the name 'whole wheat bread' and these ingredients and baking methods produce a tasty and, of course more natural, product but one that will be more susceptible to deterioration and mold at a faster rate.
Of course, the time it takes for either white or whole wheat bread to mold will also depend on the storage conditions. If kept in a dry place in a sealed environment then the bread will take longer to deteriorate and attract mold. Some people even freeze their bread to improve the lifespan and in this instance, if both loaves are frozen, both would probably maintain their freshness at a similar rate.
However, should we run an experiment where two loaves of bread are baked and then put side by side one another and allowed to mold, the wheat bread should mold faster than the white bread. This has a lot to do with the way these two different kinds of bread are made. Essentially, whole wheat bread is made 'more naturally', hence the name 'whole wheat bread' and these ingredients and baking methods produce a tasty and, of course more natural, product but one that will be more susceptible to deterioration and mold at a faster rate.
Of course, the time it takes for either white or whole wheat bread to mold will also depend on the storage conditions. If kept in a dry place in a sealed environment then the bread will take longer to deteriorate and attract mold. Some people even freeze their bread to improve the lifespan and in this instance, if both loaves are frozen, both would probably maintain their freshness at a similar rate.