Effect of pasteurization and freezing on the content of IgA1 and IgA2 subtypes in breast milk
OBJECTIVE: To determine the effect of pasteurization and freezing on the content of IgA1 and IgA2 in breast milk.
METHODS: Observational, retrospective study, carried out in women who had been breastfeeding their newborn for more than 30 days, and could donate 50 mL of milk. The concentration of IgA1 and IgA2 was determined by turbidimetry, before and after being subjected to pasteurization and freezing, every 15 days for 2 months. Freezing was at -20°C. A total IgA content of 1598.5 mg/dL was found.
RESULTS: 10 breast milk donors were selected. The initial concentration of IgA1 and IA2 was 651 and 945.7 mg/dL, respectively; At the end of the freezing times, the content of both immunoglobulins decreased: IgA1 of 74% and IgA2 of 86%. After the treatments, the immunoglobulin content decreased dramatically, with a significant difference of p < 0.05.
CONCLUSIONS: Pasteurization and freezing significantly affect the content of IgA1 and IgA in breast milk; therefore, breast-feeding remains the best way to offer full immunological protection to the infant.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:70 |
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| Enthalten in: |
Revista alergia Mexico (Tecamachalco, Puebla, Mexico : 1993) - 70(2023), 1 vom: 24. Mai, Seite 15-21 |
| Sprache: |
Spanisch |
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| Weiterer Titel: |
Reducción del contenido de IgA1 e IgA2 en la leche materna por efecto de la pasteurización y congelación |
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| Beteiligte Personen: |
López-Marin, Beatriz [VerfasserIn] |
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| Links: |
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| Themen: |
English Abstract |
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| Anmerkungen: |
Date Completed 14.08.2023 Date Revised 14.08.2023 published: Electronic Citation Status MEDLINE |
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| doi: |
10.29262/ram.v70i1.1205 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
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| 245 | 1 | 0 | |a Effect of pasteurization and freezing on the content of IgA1 and IgA2 subtypes in breast milk |
| 246 | 3 | 3 | |a Reducción del contenido de IgA1 e IgA2 en la leche materna por efecto de la pasteurización y congelación |
| 264 | 1 | |c 2023 | |
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| 500 | |a Date Completed 14.08.2023 | ||
| 500 | |a Date Revised 14.08.2023 | ||
| 500 | |a published: Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a OBJECTIVE: To determine the effect of pasteurization and freezing on the content of IgA1 and IgA2 in breast milk | ||
| 520 | |a METHODS: Observational, retrospective study, carried out in women who had been breastfeeding their newborn for more than 30 days, and could donate 50 mL of milk. The concentration of IgA1 and IgA2 was determined by turbidimetry, before and after being subjected to pasteurization and freezing, every 15 days for 2 months. Freezing was at -20°C. A total IgA content of 1598.5 mg/dL was found | ||
| 520 | |a RESULTS: 10 breast milk donors were selected. The initial concentration of IgA1 and IA2 was 651 and 945.7 mg/dL, respectively; At the end of the freezing times, the content of both immunoglobulins decreased: IgA1 of 74% and IgA2 of 86%. After the treatments, the immunoglobulin content decreased dramatically, with a significant difference of p < 0.05 | ||
| 520 | |a CONCLUSIONS: Pasteurization and freezing significantly affect the content of IgA1 and IgA in breast milk; therefore, breast-feeding remains the best way to offer full immunological protection to the infant | ||
| 650 | 4 | |a Observational Study | |
| 650 | 4 | |a English Abstract | |
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Freezing | |
| 650 | 4 | |a IgA | |
| 650 | 4 | |a IgA1 | |
| 650 | 4 | |a Immunoglobulins | |
| 650 | 4 | |a Milk human | |
| 650 | 4 | |a Pasteurization | |
| 650 | 4 | |a Turbidimetry | |
| 650 | 7 | |a Immunoglobulin A |2 NLM | |
| 700 | 1 | |a Osorno-Gutiérrez, Adriana Patricia |e verfasserin |4 aut | |
| 700 | 1 | |a Arredondo-Vanegas, Natalia |e verfasserin |4 aut | |
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