This week, in order to complete Part 2 of the Biomimicry Project, I made a biologically moldy experiment, which is a record of the process of moldy bread. I bought a donut and placed it outdoors, then took a photo every day to record the moldy changes of the doughnut. I have carefully observed the moldy changes in the bread, including changes in the color and shape of the mold. I think the shape and color of the mold can be used as a pattern in his own work, such as fabric design and product design.
Of course, the most important reason for me to do this experiment is because I think that everything that exists has its own life, and the way to prove their existence is diverse. The process of bread mold also reflects the change of bread life from another angle. Although this was originally an abstract concept, bread in an external environment, that is, in a passive situation, it has produced changes, and this change has thus proved the existence of its life. The gradual change in mold allows the observer to clearly recognize that the organism is independent and transient.
Through this observation, I summarized the factors related to mold growth, which have the following points:
1. The PH required for mold is acidic.
2. The mold growth requires a certain humidity, water activity (that is, the part of water that can be really used by microorganisms). The relative content should not be lower than 0.7.
3. The mold has its own suitable temperature, and it is most suitable for breeding at this temperature.
4. As for the illumination problem, the mold is a heterotrophic organism, so it is not dependent on light in a biological sense. But the light may affect the moisture and temperature. Temperature, moisture, which can affect mold growth.
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