Uses of microbes
- Created by: JS007
- Created on: 08-01-18 13:56
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- Uses of microbes
- Beer production
- Barley is converted into ethanol
- Firstly, the barley must be coverted, by enzymes into low molecular weight sugars
- saccharomyces can only utilise low molecular weight sugars
- saccharomyces ( yeast) converts the sugars into ethanol
- Wine production
- The ratio of malic acid: sucrose inside the grape must reach optimum levels
- The colour of the wine depends on whether the pigment-containing skins are used
- Industrial solvents
- saccharomyces is used to produce ethanol which is added to petrol
- About 5% of 'petrol' is actually ethanol
- clostridium produces acetone, butanol and ethanol
- Amino acids
- May be used to correct dietary deficiencies
- MSG (monosodium glutamate)
- An auxotroph is created by genetic modification which overproduces a specific compound
- Cells grown in a biotin deficient culture will have leaky membranes and leak the desired product
- Organic acids
- Citric acid is produced by the fungus aspergillus
- Aspergillus is grown in pelleted morphology
- Pelleted morphology stimulates anaerobic metabolism
- Polysaccharides
- xanthomonas produces xanthan gum (naturally from seaweed)
- Used in food industry or for oil extraction
- Microbes must be grown in a phosphate limited culture
- This ensures that all carbon molecules go towards carbohydrate production, not ATP production
- Lipids
- alicaligenes produces hydroxybutryate
- Hydroxybutryate is a biodegradable alternative to crude oil plastics
- Vitamins
- Propionibacterium produces vitamin B12
- Quorn 'meat
- Filamentous fungus fusarium is grown on crude oil waste products
- Also known as single-celled protein
- Beer production
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