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.
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:
This contamination may lead to various diseases in hummans
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.
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.
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.
bacteria
mould
Fungi can rot wood, spoil food, and cause skin diseases such as ringworm.
Yeasts, molds and bacteria are microbes that spoil food. See Related Links for lists.
Yeast makes food spoil faster through metabolizing sugars and other carbon sources. A low PH environment also aids the fungiÕs growth. One important point about yeast is that it causes no foodborne illness.
These microbes are an essential part of all ecosystems, because they decompose or break down dead material and keep it from accumulating
mould
Food spoilage happens when bacteria in the food is allowed to grow. The food heats up to room temperature or hotter and the bacteria grow allowing it to spoil.
Yes, light makes food spoil faster. Energy causes decay and deterioration. Light is a form of energy,and the more energy exposed to the food, the more quickly food will spoil.
Most foods have a gas in them that keeps them fresh. When a food goes bad it releases that gas, which causes the food to spoil. This is also what causes cans and containers to bulge when the food goes bad.
Microorganisms cause chicken to spoil.
Fungi can rot wood, spoil food, and cause skin diseases such as ringworm.
Yes, absolutely, but takes longer to spoil than uncooked food and depends on how quickly it was refrigerated and stored after cooking. Different food takes different amounts of time to spoil.
If food particles remain in the teeth , it can spoil your teeth quickly.
Exposure to air.
Food can spoil anywhere. If it is left in the temperature danger zone, food will spoil faster. The temperature danger zone is between 145 degrees and 45 degrees.
Yes, light is one of the things that causes food to spoil faster. This is true of both natural light and artificial light. This process is called photodegradation.
no