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Samenvatting H10 nuttig gebruik van M.O. microbiologie en hygiëne semester 1
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Samenvatting H10 nuttig gebruik van M.O. microbiologie en hygiëne semester 1, jaar 1 voedings- en dieetkunde
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MICROBIOLOGIEH10 NUTTIG GEBRUIK M.O.
10.1. FERMENTATIE VAN VM
Fermentatie = omzetten van organisch materiaal in afwezigheid van zuurstof (anaeroob)
Bacteriën, celstructuren of schimmels bekend om hun fermentatie
Ook in sommige dierlijke cellen (skeletspieren)
Van oudsher werden bacteriën, schimmels en gisten gebruikt om houdbaarheid voedsel en dranken
te vergroten
Door fermentatie neem veiligheid product toe en wordt VW soms verbeterd
Voorgaande hoofdstukken
- Fermentatie van Saccharomyces cerevisiae en andere gisten in brood, bier, wijn
- Fermentatie van schimmels in tempeh, sojasaus, miso…
Gisten met het geslacht Saccharomyces zetten pyruvaat om naar ethanol, C02 of ethanol + CO2
Gebruik bij bier, wijn en brood
Gisten met geslacht Aspergillus zetten pyruvaat om naar melkzuur
Sojasuas
Gisten met geslacht Lactobacillus zetten pyruvaat om naar melkzuur
Kaas, yoghurt
FERMENTATIE DOOR MELKZUURBACTERIËN
Melkzuurbacteriën produceren lactaat (vaak gewenst in VM)
Melkzuurbacteriën = bacteriën die glucose (na glycolse) anaeroob converteren tot melkzuur
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