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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.
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Note by afraqawi, updated more than 1 year ago More Less
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Created by afraqawi over 11 years ago
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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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