What causes food to spoil?

Answer 1

It spoils for two reasons

1) when air gets at it, it oxidizes and its quality diminishes.

2) bacteria from the air land on the food and begin to grow, this causes an unpleasant smell, bad taste, the food discolors and becomes dangerous to eat.

Food can also spoil due to the growth of microbes indigenous to the food. For example: Milk will spoil because pasteurization does not sterilize the milk. Eventually, the microbiological load will make the milk inedible.

Foods can also contain enzymes which will break down the structure. The ripening of fruit is related to enzymes. Most foods spoil due to microbiological growth. Molds, yeast and/or bacteria can sour food, change the appearance and texture and make the food generally unappetizing and undesirable.

Answer 2

Food is major source of nutrients, so due to the exposure of food materials to favorable conditions like temperature, aerobic/ anaerobic condition, ph there can be contaminated by various kinds of micro organisms:

• fungi
• bacteria
• yeast
• protozoans

This contamination may lead to various diseases in hummans

Answer 3

If it was kept in the fridge for a while, it would start to have mould on the actual skin or if it was kept not in a fridge it would do the same process as above; it would eventually start to have mould.

Answer 4

Actions of various enzymes, oxidation and microorganisms. These include bacteria, mold, fungus, yeast, moisture, temperature and chemical reaction. Refrigeration and freezing can delay food spoilage, as can heat processing (such as pasteurization or canning processes), and irradiation. When sealed wet food containers (cans, tetrapacks, etc.) become opened, the food inside is subject to spoilage, as microorganisms can enter, so it must be used immediately or put into a freezer or refrigerator to preserve it. If one has no refrigeration, home canning can help preserve food for future use, if the proper equipment is available.

Answer 5

Space food can spoil within two days and should be eaten before that time. Space food are a variety freeze dried foods that need to be rehydrated to be eaten.

Answer 6

bacteria