Some methods of food preservation are given. Explain how it works? a) Pickling b) Drying c) Preservatives d) Canning e) Preserving f) Radiation g) Salting
Answers
Answer:
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Explanation:
a) Pickling is the process of preserving or extending the shelf life of food by either anaerobic fermentation in brine or immersion in vinegar. ... The resulting food is called a pickle, or, to prevent ambiguity, prefaced with pickled. Foods that are pickled include vegetables, fruits, meats, fish, dairy and eggs.
b)Drying or “dehydrating” food is a method of food preservation that removes enough moisture from the food so bacteria, yeast and molds cannot grow.
c) Preservatives are added to food to fight spoilage caused by bacteria, molds, fungus, and yeast. Preservatives can keep food fresher for longer periods of time, extending its shelf life. Food preservatives also are used to slow or prevent changes in color, flavor or texture and delay rancidity.
d)Canning is the process of applying heat to food that's sealed in a jar in order to destroy any microorganisms that can cause food spoilage. Proper canning techniques stop this spoilage by heating the food for a specific period of time and killing these unwanted microorganisms.
f)Food irradiation is a processing and preservation technique with similar results to freezing or pasteurisation. During this procedure, the food is exposed to doses of ionising energy, or radiation. ... At higher doses, this process kills insects, moulds, bacteria and other potentially harmful micro-organisms.
g)Salt acts as a preservative by reducing the availability of water in foods, thereby depriving microorganisms from using available water as a nutrient [ and decreasing enzymatic activity .