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Impact of γ-irradiation or heat pasteurisation treatment on nutritional and immunological properties of human milk

Robichaud, Valérie, Aguilar-Uscanga, Blanca Rosa, Millette, Mathieu, Allahdad, Zahra et Lacroix, Monique ORCID: https://orcid.org/0000-0002-2042-4033 (2021). Impact of γ-irradiation or heat pasteurisation treatment on nutritional and immunological properties of human milk International Dairy Journal , vol. 123 , nº 105178. p. 1-10. DOI: 10.1016/j.idairyj.2021.105178.

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Résumé

The nutritional and microbiological quality of human milk (HM) before and after spray drying was compared. The results showed that the atomisation of untreated-HM did not significantly change protein, lactose and fat content. The immunoglobulins showed a retention from 70 to 82% for IgA, IgG and IgM. γ-Irradiation (3, 5 and 10 kGy) of frozen and powdered milk as well as Holder pasteurisation (HoP; 62.5 °C for 30 min) of liquid milk were used to decontaminate milk. A dose of 5 kGy irradiation resulted in 99.7% destruction of the total aerobic flora in the powdered milk and in the frozen milk, while it was 95.1% for HoP-treated milk. Macronutrients and bioactive compounds (lysozyme and amylase) present in atomised HM were not affected by γ-irradiation even at a dose of 10 kGy. Despite a slight increase in malondialdehyde, treatment with irradiation at 10 kGy did not alter the antioxidant potential. © 2021 Elsevier Ltd

Type de document: Article
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Centre: Centre INRS-Institut Armand Frappier
Date de dépôt: 23 juin 2022 02:42
Dernière modification: 23 juin 2022 02:42
URI: https://espace.inrs.ca/id/eprint/12429

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