food preservation

FOOD PRESERVATION

By: kami.... Ahmad Imran Dayallen Muqri Dini Ameer Hakim Aminur Nirza

WHAT?WHY?WHICH?HOW?

DEFINITION OF FOOD PRESERVATION

Food preservation is the process of treating and handling food to stop or greatly slow down spoilage (loss of quality, edibility or nutritive value) caused or accelerated by micro-organisms.

Preservation usually involves preventing the growth of bacteria, fungi, and other micro-organisms, as well as retarding the oxidation of fats which cause rancidity. It also includes processes to inhibit natural ageing and discolouration that can occur during food preparation such as the enzymatic browning reaction in apples which causes browning when apples are cut.

How?bottling

Vacuum packing drying

waxing

FREEZING

pasteurizationboilin

g smoking

canning

picklingSALTING

Pickling, is the process of preserving food by using sugar solution to produce sweet taste, must add vinegar (acetic acid) into the mixture. The resulting food is called a pickle. This procedure gives the food a sweet taste. In South Asia ,edible oils are used as the pickling medium instead of vinegar.

Pickling Steps

1.Put a packet of 1kg sugar into a container

2.Pour hot water into the container .Add some vinegar into the mixture.

Tips: use hot water to dissolve sugar easier

3. Stir the mixture until the sugar dissolve. Set aside.

4. Cut 4 pre-ripe mangoes in small pieces.

5.Prepare salt solution in another container.6.Soak the mangoes in the salt solution for 5 minutes.7.Wash the mangoes that had been soaked.

8.Lastly, soak the mangoes in the sugar solution for 2 months.

SALTINGsalting, is the process of preserving food by anaerobic fermentation in brine (a solution of salt in water) to produce lactic acid, or marinating and storing it in an acid solution, usually vinegar (acetic acid). The resulting food is called a pickle. This procedure gives the food a salty taste. In South Asia edible oils are used as the pickling medium instead of vinegar.

SALTING STEPS1.Put 4 packets of salt in a container.

2.Add in water and stir the mixture.

3.Lastly,soak 2 eggs in the mixture for 2 months.

1.ALL THE TEACHERS WHO HELPED US EXSPEACIALY PN.RUZLINA.

2.EACH MEMBERS FAMILAY WHO GAVE US SUPPORT AND IDEAS TO FINISH THIS PROJECT SUCCESFULLY

3.AND LASTLY WE WANT TO THANK MUHAMAD ARIF FAUZAN

OUR SINCIER THANKS TO :-

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