Agriculture:Food Preservation
From the moment food is harvested or processed it begins to deteriorate in quality. This can be the result of microbial activity, natural chemical reactions or careless handling. In order to extend the length of time for which food is safe to eat, we need to preserve it. In this video we will examine the methods of food preservation.
- Added：2006
- Country：Australia
- Duration：26
- Time of update：2011/3/11 15:03:55