Question
Physical methods of microbial control include which of the following? Select all correct options filtration heavy metals dry and moist heat halogens pasteurization
Solution
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MelvinElite · Tutor for 8 years
Answer
The physical methods of microbial control from the provided options are:<br /><br />* **Filtration:** This method physically removes microbes from liquids or gases using a filter.<br />* **Dry and moist heat:** Heat denatures proteins, effectively killing microorganisms. Dry heat includes methods like incineration and hot air ovens. Moist heat includes methods like autoclaving, boiling, and pasteurization.<br />* **Pasteurization:** This is a specific type of moist heat treatment that reduces microbial load in heat-sensitive liquids like milk.<br /><br />Heavy metals and halogens are *chemical* methods of microbial control, not physical.<br />
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