optimal conditions required for food production involving microbes.
The effects of different cultures within yogurt
The effects of changing pH in yeast fermentation
Questions to research
How is the pH level related?
What is the process of fermentation?
What is anaerobic respiration?
Findings
Bacteria can live in hotter and colder temperatures than humans, but they do best in a warm, moist, protein-rich environment that is pH neutral or slightly acidic
Possible experiments
Questions to research
Do different yogurt starter cultures affects the yogurt that is made?
Findings
Yogurt is made from the fermentation of the lactose in milk to produce lactic acid which acts on milk protein to give yoghurt its texture and its characteristic acidic taste.
Possible experiments
The process of food preservation through effects of external substances.
Questions
How does different substance affect the vegetable rotting?
Findings
Microorganisms have been reported to cause extensive deterioration of fruits. Some of these microorganisms cause rotting, discolouration or fermentation of the fruits which affects their preservation.
Possible experiments
The effects of temperature on wine fermentation production
Questions to research
How long does the fermentation process take?
How hot or cold does it have to be to produce ethanol
Findings
heat is a catalyst so When heat is applied to a chemical reaction, it speeds things up. This is why temperature plays a role in the fermentation of wine
Possible experiments
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Possible limitations
Possible limitations
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Measure ethanol vapour in
Use chronicle flask and put the probe on top then measure the ethanol vapour.
(application - wine fermentation
Possible limitations
Time restrictions for fermentation process may affect validity of results.
The experimental fermentation process takes too long as the final process of the winemaking takes a couple of weeks to create.