Athermal treatments
Decontamination of dehydrated food products
Article REF: F1136 V1
Athermal treatments
Decontamination of dehydrated food products

Authors : Frédéric FINE, Patrick GERVAIS

Publication date: March 10, 2007 | Lire en français

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4. Athermal treatments

Because of the sensitivity of food powders to heat, athermal decontamination processes (fumigation, irradiation, etc.) seem to be more appropriate than processes working with moist heat and under pressure, as they avoid thermal degradation of organoleptic qualities and nutritional properties [79] .

4.1 Fumigation

Fumigation consists of applying gases such as ethylene oxide, propylene oxide, hydrogen phosphide and methyl bromide to the powders. These compounds generate alkylation reactions, thereby destroying or inactivating micro-organisms. These compounds reduce aerobic flora by 1 to 4 log, at concentrations ranging from 400 to 1,000 mg/L [6]...

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