Answer :
Final answer:
Lowering the humidity in stored grains and other food products to reduce mold damage is an example of the physical/environmental modification pest management method. This method controls microbial growth through desiccation (drying) which reduces the available water necessary for microbial growth and survival. Techniques like sun drying, freeze drying, and salting or sugaring to lower water activity in foods are used in this method.
Explanation:
Lowering the humidity of stored grains and other food products to reduce damage from mold is an example of Physical/environmental modification method of pest management. Pest management often utilizes various methods including mechanical, biological, physical and regulatory pest control. In this context, we are discussing physical methods specifically designed to curb microbial growth such as heating, refrigeration, freezing, high-pressure treatment, desiccation, lyophilization, irradiation, and filtration.
Desiccation, also known as drying, is a key physical method extensively used for millennia to preserve food by reducing the available water needed for microbial growth. By managing the humidity levels of stored food products, we can alter the environment to be less favorable for the growth and survival of microbes including harmful molds. This is done on a physical level through techniques like sun drying, freeze drying or lyophilization, and using osmotic pressure via elements like salt or sugar to decrease water activity in foods.
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