Methods of preservation of food

What is preservation?

Food preservation is that the techniques to stop food spoilage, gastrointestinal disorder, food infection and preventing microorganism contamination within the food. So we discuss about the Methods of preservation of food in this article.

Objectives of the methods of preservation of food

A) To stop and to remove microorganism contamination.

B) To inhibit microorganism growth.

C) To kill contaminating pathogens.

D) To reduce food spoilage,food infection and food poisoning.

1. Pickling is method of preservation

Methods of preservation of food

It is the first method of preservation of food. In this method food preserved with the help of vinegar.

Pickling means that it helps to protective food in brine (salt solution) or marinating in vinegar (acetic acid) to preserve foods.

With the assistance of pickling reserves meat, vegetables because of the action of acetic acid that prevents microorganism growth.

There are varied ways of pickling like chemical pickling and fermentation pickling. In industrial pickles sodium benzoate or EDTA is additional to extend the period of time.

2. Smoking is method of preservation

Methods of preservation of food

It is the second method of preservation of food. In this method food preserved with the help of Smoking. Smoking is that the method that cooks, flavours and preserves food exposing it to the smoke from burning wood.

Smoke is antimicrobial and inhibitor and most frequently meats and fish are preserved.Smoking of fish and meat stop spoilage by dehydration

The wood smoke contains the large number of compounds, that are they helps to anti microorganism and slow rancidification of animal fats. Smoking as a preservative enhances the danger of cancer

3. Salting is method of preservation

Methods of preservation of food

It is the third method of preservation of food. In this method food preserved with the help of salt. Salting additionally called curing it removes moisture from foods like meat.

Food preserved in salt like fish, meat and the Salt kills and inhibits growth of microorganisms at 200th of concentration.

4. Canning is method of preservation

Methods of preservation of food

It is the fourth method of preservation of food. In this method food preserved with the help of canning.

It is method of preserving food within which the food contents are processed associated sealed in an airtight container at high temperature it is a good way of preserving them.

Food items like jams, vegetables, fish, and even baked food are canned bottles and sold-out within the market.

5. Pasteurization is method of preservation

It is the fifth method of preservation of food. In this method food preserved with the help of Pasteurization.

It is the method of heating milk below the boiling point (or any liquid or a food) to kill pathogenic bacterium to create the food safe to eat. Pasteurizationis the method used to kill only the vegetative form of the bacteria where the spores survive.

Two methods of pasteurization | Methods of preservation of food

a) Holding method

In this method Milk kept for 30 min at low temperature 62.8°C. Also referred to as low temperature holding technique (LTHT)

b) Flash method

In this method Milk kept for 15 secs at high temperature at 71.7°C. Also referred to as hot temperature short time method (HTST)

6. Refrigeration is method of preservation

Methods of preservation of food

It is the sixth method of preservation of food. In this method food preserved with the help of refrigeration

Keeping ready food stuffs in cold storages. Keeping food at low temperatures or a cold Remain unspoiled in the refrigerator at 4°C Freezer temperature should be -18°C. Deep freezers at -60°C are good for storing meat and fish.

7. Dehydration is method of preservation

It is the seventh method of preservation of food. In this method food preserved with the help of dehydration.

The method of removal of water from food. Simplest and cheapest technique.
Drying reduces weight therefore foods will be carried simply Prevent microorganism growth because of lack of water Fish, fruits etc. will be holding on.

8. Freez drying is method of preservation

It is the eighth method of preservation of food. In this method food preserved with the help of vinegar. Fast freezing and dehydration of frozen product under vacuum.

Freez drying could be a water removal method usually accustomed preserve perishable materials, to increase period or create the fabric a lot of convenient for transport.

Freez drying works by phase change the material, then reducing the pressure and adding heat to permit the frozen water within the material to sublimate.

9. Chemical additives

It is the ninth method of preservation of food. In this method food preserved with the help of Chemical additives.

Food additives are substances added to food to preserve flavor or enhance its taste and appearance or stop spoilage Chemical additives inhibit microorganism growth.

Many chemicals help control microorganism growth and ar used as preservatives. Examples of chemical preservatives are the benzoate and metallic element metabisulphite

These preservatives are mostly used in the squashes,like sherbets, and ketchups.

10. Radiation is method of preservation

It is the tenth method of preservation of food. In this method food preserved with the help of vinegar. UV rays, beta rays, gamma rays wide utilized in food preservation.
It helps or Controls and prevents microorganism growth.

During this procedure, the food is expose to the ionising energy, or in radiation. At low radiation extends a product’s shelf life of the food products.

At higher doses, this process kills insects, moulds, yeast,bacteria and other potentially harmful micro-organisms.

Conclusion:

Food preservation is a method of retardation down food from turning into unhealthy. Besides creating the food lasts longer, preservation additionally prevents food wastage. Food preservation additionally allows food to be eaten up out of season.

I hope you may get all the information concerning about methods of preservation of food, when reading my article, you have any doubt above all the releted article then i will be able to help you tell me the comments section.

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