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Which of the following represents foods that usually have an Aw greater than 0.85?

Dry grains

Fresh vegetables

Fresh vegetables are known for having a water activity (Aw) greater than 0.85 because they contain a high percentage of water, which is essential for their growth and quality. The Aw scale ranges from 0 to 1, where higher values indicate more available moisture. Fresh vegetables generally retain enough moisture to support microbial growth, making them more susceptible to spoilage if not handled properly. In contrast, dry grains, canned vegetables, and dried fruits typically have lower Aw values since their moisture content has been reduced through drying or processing methods, which helps to inhibit microbial growth and prolong shelf life. Understanding Aw is crucial for food safety and proper storage practices, especially in preventing the growth of pathogens in fresh produce.

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Canned vegetables

Dried fruits

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