Why is there pink mould on my bread sometimes?

Question

Why is there pink mould on my bread sometimes?

Answer 1

Could it be jello?

Answer 2

The color of molds is determined by their reproductive systems, specifically, their ascospores.  

Reddish or pink molds are usually species of Fusarium.  For more information about this particular type of mold see the wiki at http://en.wikipedia.org/wiki/Fusarium .  

If it is a hot pink color, than it might not actually be a mold, but instead a bacterium known as Serratia marscencens.  According to a few sites and books I checked, "S. marcescens can cause conjunctivitis, keratitis, endophthalmitis, and tear duct infections. It is common in the respiratory and urinary tracts of adults and the gastrointestinal system of children".  (This specific quote is from Wikipedia) If you find this bacterium anywhere in your house besides your bread, you should be able to kill it off with bleach.  

Some types of yeasts are also pink, and some of those are very, very dangerous.  Of course, some of them are only dangerous if you already have a weak immune system.  

Either way, toss the bread, and clean out your bread box.  To prevent the growth of any types of mold, bacteria or fungi try to store bread for as little time as possible, and try to keep it cool and dry.  Mold loves moisture.