How to prevent food spoilage - created from Mind Map

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Note on How to prevent food spoilage - created from Mind Map, created by afraqawi on 17/03/2014.
afraqawi
Note by afraqawi, updated more than 1 year ago More Less
afraqawi
Created by afraqawi over 11 years ago
afraqawi
Copied to Note by afraqawi over 11 years ago
afraqawi
Copied to Note by afraqawi over 11 years ago
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COOKING: heat denatures enzymes/proteins; kills microorganism

Pasteurising: heating to 72 C for 15 seconds & quickly cooling to 4 C = killing microorganisms

Drying, salting, coating in sugar: dehydrate microorganisms (water leaves by osmosis)

Smoking: food gets hard & dry outer surface, smoke contains antibacterial chemicals

Pickling: acid pH denatures enzymes/proteins

Irradiation: ionising radiation disrupts their DNA- kills microorganisms

Cooling & freezing: retard enzyme activity metabolism, growth, reproductive v slow (do NOT kill)

Other methods: Canning: heated, sealed in airtight cans Vacuum wrapping: air excluded; microbes can't respire aerobically Plastic/paper packaging

How to prevent food spoilage

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