How come mold still grows in airtight containers?

Question

airtight containers claim to be moldfree. but howcome when i put a slice of bread or some banana they still went mouldy after a week- just like the ones in normal containers? the containers were in the same area. this is for a science experiment btw

Answer 1

that is because, those containers are not airtigh...

Mold needs air to grow...VACUMM seal containers are the way to go...

There are new zip loc bags that you can removed the air with a suction gun, that comes with it...Look at your local grocery store...I used those and they are great

Answer 2

IT AINT AIRTIGHT

DEAR,,,SORRY TA BURST YOUR BUBBLE....DUNT BE NAIVE..

TO BE AIRTIGHT YA NEED A VACUUM....UND I DUNT MEAN A VACCUM CLEANA.....

YEAH A VACUUM///GOT IT?? SEAL THE DEAL!

Answer 3

There are already mold spores on your bread to begin with -- and they can thrive in the tiniest bit of air.  Your containers just don't allow any new air in or out, but of course there is the volume of air inside your container -- all the volume not occupied by the bread.  That's plenty for the mold to live on.

Now maybe if you were to induce a true vacuum -- suck all the air out of the container -- that could work. You would need some kind of industrial strength vacuum sealer!  Maybe one of those "seal-a-meal" dealies.