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Werkvoorschrift reductie van ethylacetoacetaat en immobilisatie

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Dit is een werkvoorschrift die gebruikt is voor het practicum Biokatalyse

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Uploaded on
February 12, 2016
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February 12, 2016
Number of pages
2
Written in
2015/2016
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Case
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Werkvoorschrift: Reductie van Ethylacetoacetaat en Immobilisatie
R. Reich


Werkvoorschrift:
Yeast reduction of Ethyl acetoacetate: (S)-(+)-Ethyl 3-Hydroxybutanoate
[Butanoic acid, 3-hydroxy-, ethyl ester, (S)]




Figuur 1: Reductie van Ethylacetoacetaat: (S)-(+)-Ethyl 3-hydroxybutanoaat

Week 1:
1. Aan een erlenmeyer van 1 L met 160 ml water wordt tijdens het roeren met een grote roervlo het
volgende toegevoegd:
- 30.0 g sucrose
- 20.0 g bakkersgist
2. Het mengsel wordt gedurende 1 uur bij ongeveer 30 °C geroerd. Let op 1 à 2 bubbels CO2 per
seconden.
3. Vers gedistilleerde ethylacetoacetaat wordt toegevoegd.
4. Voeg 2,0 g (0,0154 mol) ethylacetoacetaat toe en roer de fermentatie suspensie zolang mogelijke
bij kamertemperatuur.
5. Voeg aan het einde 2,0 g (0,0154 mol) ethylacetoacetaat toe.
6. Laat het mengsel gedurende 50 a 60 uur bij kamertemperatuur roeren.

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