DeviantART is a niche social networking site, it is closed and reserved. It is specifically targeted at people in the illustration and art area in hopes to allow them to socialize and share their work.
Limbic System, hope this helps :)
Answer:
In the microscopic level you can use non-toxic chemicals etc and you can aslo keep the food in desirable temperature inorder to prevent it from being rotten, incase of some food get contaminated you can just not use it because it can make you sick or if it only partly contaminated, then you can use the uncontaminated part of it and not use the other part.