Faculty of Allied Health Sciences > Nutrition and Food Engineering

When does the food go bad?

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nusrat-diu:
Since mayonnaise contains eggs, it’s not made to last forever. But when it’s commercially manufactured, the condiment also contains ingredients to help preserve it and extend its shelf (and fridge) life.
 
Your jar will probably have a “best by” date stamped on it. Whether the jar is opened or remains sealed, it will taste best if you use it by that date. “Once the jar is opened and the product exposed to oxygen, the flavors in the oil may be affected,” says Allen. Again, the best approach is to follow your nose. If the oils separate and start to smell off, the mayonnaise is past its prime.
 

nusrat-diu:
When you buy a head of lettuce at the store, it should keep, intact, for about two weeks. But once you open up the head and cut up the lettuce, it will start to spoil faster. “That’s because you’re exposing the interior of the lettuce,” says Allen. And that releases nutrients for bacteria to feed on, and causes leaves to brown due to being exposed to oxygen. Those leaf lettuces that are contained in special modified atmosphere packaging can last longer than a head you cut up because they are better protected from oxygen and bacteria exposure.
 

nusrat-diu:
As a general rule, you should plan to use or freeze fresh meats within days of purchasing them. The United States Department of Agriculture (USDA) recommends cooking and eating poultry one to two days after purchasing, and cooking and eating other meats within three to five days. The good news is that meat keeps much longer in the freezer. If you don’t think you’ll have a chance to cook what you’ve bought, toss it in the freezer and know that you can safely defrost and cook it any time over the next year.
 

sethy:
Thank you mam for the topic. It is very informative.

goodboy:
"Maintenance" is better than looking for worst!!!! The posts are really more edible to impose it towards the generation.....

Mam.......it's really a good one!! :)

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