What conditions are most favorable for microbial food production? - Coggle…
What conditions are most favorable for microbial food production?
Methods of mearusing the dependent variables: using a measuring cylinder and a weight.
the growth of the yeast
Method of changing independent variables: measuring different sugar weight using a scale.
The amount of sugar in each bread solution.
test tube x5
180 gram of sugar
water bath x1
150 gram of all purpose flour
350 ml of water
Type of microbials
Metabolism of yeast
Glucose + O2 => CO2 + ATP + Water
Glucose => Lactic Acid
Glucose => CO2 + Ethanol
Methods of measuring the rate of growth
using a measuring cylinder, measuring the initial volume of the bread dough, and after a certain amount of time, record the final volume.
Food production by microbials
Atmosphere/ Oxygen and Carbondioxide
Factors affecting the growth of microbials:
The foods with high water contain or moist are the ideally growing condition for microbes.
Generally, most microbes prefer neutral pH.
In a nutrition rich environment, microbes growth faster.
This is an outer cover which protect food from the invasion of microbes.
This is a type of chemical that inhibits the growth of microbes to prevent spoilage.
Microbes develop best in the Oxygen rich condition.
Microbes multiply best in the warm condition.
The higher amount of sugar in the bread solution, the greater rate of growth of the yeast.
Mix yeast with sugar, warm water( warm water temperature should be similar for all trials) and bread dough as well.
Place the bread solution into a 100 ml beaker (measure the weight of each bread solution and make sure that they are similar to make a fair test).
Cover the beaker with plastic wrap for 30 minutes before measuring the growth. (Covering the beaker will prevent water loss, maintaining the moisture to support the growth of yeast).