Virtual Labs: Understanding Water Activity

By Learning Games Lab, NM State University on AppTrack Ninja.

What is water activity, and how does it affect food spoilage? Explore how microbes and reactions inside food rely on water, then calibrate a lab water activity meter. Virtual Labs interactive food science modules train high school and college students in basic laboratory techniques. Moist foods – like fresh fruit or raw meat – often have high water activity and spoil quickly. But some foods that seem moist – like jam or pepperoni – don’t spoil as quickly. Why is this? All living things need water to survive. Enzymes and chemical reactions also require water. If water activity is less than 0.6…

Categories: Education

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