Lower temperature inhibits bacterial growth.
In the past people used to pickle or cure their foods to keep the food from spoiling. And over the many years the refrigerator and freezer have made these methods less of a necessity than they once were.
to keep the food from not spoing
You can freeze many foods. Some foods can be salted. Canning or putting it into jars can keep many foods fresh. You can also pickle or brine some foods. Some foods keep well if you just seal them into plastic.
The chemical revolution allows humans to enjoy many conveniences. These include many cleaners and body care essentials. It also helps to prevent the foods that we eat from spoiling.
By using an portable generator as an backup plan for keeping things from spoiling and having the energy to function is very important. In many ways they allow you to be able to keep food from spoiling so that there will be food to eat if the electric is off for hours or evening days.
Depending on the type of the food many methods of preservation exist: adding sugar, salting, irradiation with gammas, freezing, lyophilisation, pasteurization etc.
spoiling of bread by keeping it outside for many days
Food left out of the refrigerator is okay to eat for about 2 hours. If the temperature is under 80 degrees. The longer a food stays in the danger zone the more risk you take eating that food. Foods should either be kept hot or kept cold before eating to be really safe.
Preservatives preserve food to keep from spoiling such as aspartame is a popular preservative You answered your own question. The root word of preservatives is preserve. If you look up the definition of preserve, then you have your answer. I recommend brushing up on your vocabulary as it can be very beneficial to you in many ways.
you can eat many foods but you must exercize to keep your wight off.
Duck is considered a delicacy in many countries. In order to keep it from spoiling while out in the field you should keep the meat in a cooler full of ice packs.
None.