Food Class Notes

Food Class Notes

By Chris WolvertonScienceEducationCoursesLife Sciences
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Food Class Notes episodes

  • Astringency and Pungency
    Some of the foods we eat include molecules that don’t contribute taste or flavor to our food, but interact in our mouth to create other sensations. The two most common experiences like this are astringency, which is a sense of dryness or even puckering, and pungency, which we typically refer to as spicy-hot.
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  • Eating Modified Leaves
    In addition to the “leafy greens” that we eat, there are a number of foods that are in our diet that may not strike you as a leaf at first glance. These are the modified leaves, and in this episode I walk through three examples of modified leaves that are commonly eaten.
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  • Plant Domestication
    The domestication of plants from their wild, ancestral form into a form that humans had selected for certain improvements is a fascinating and complex topic. Here we dive into the idea of domestication and think a little bit about what kinds of traits were selected by humans to turn wild plants into a form more … Continue reading "Plant Domestication"
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  • Taste and Flavor
    The foods we eat and love are all characterized by the combination of tastes and aromas, which combine to form flavor. Tastes are perceived in our mouth through receptors on our taste buds, while aromas (smells) are detected at a structure deep inside our nose called the olfactory bulb. Both tissues have thousands of molecular … Continue reading "Taste and Flavor"
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  • Herbs and flavor
    Almost all of the flavorings we add to our foods and dishes come from plants that make specific chemical compounds as protection against attack by animals. Many of the common cooking herbs come from just a couple of plant families that make groups of compounds in their leaves to protect them from grazing.
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  • Leaves and turgor pressure
    This episode explores how it is that lettuce and other leafy greens can be crispy, crunchy, and full of water when we bite into it. The secret, of course, is that plant cells are full of water, so full that it exerts a very high positive pressure inside the cell called turgor. The structure that … Continue reading "Leaves and turgor pressure"
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  • Overview of Plant Organs
    In this episode, we get into an overview of the organs that make up the body of the plant. We take a brief look at the relationship between form and function by thinking about the “job” of each of the organs and how its shape and properties allow it to be adapted to perform that … Continue reading "Overview of Plant Organs"
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  • Overview of Plant Characteristics
    In this episode I introduce some of the key characteristics and properties of plants that influence how they are used as food. The life forms of plants compared to animals, along with the evolutionary history that led to these characteristics, is a good place to start a study of plants as food.
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About Food Class Notes

From the publisher's feed

This feed includes short audio content to supplement an online summer course taught by Chris Wolverton at Ohio Wesleyan University. This class is an exploration of food from a scientific point of view, including the biology, origin, composition, and preparations of many plants used as human food, such as corn, wheat, rice, and many more. Other topics include the adaptive biology and human uses of coffee, tea, chocolate, fruit, nuts, spices, and others. Special attention will be given to the adaptive significance of food products from the perspective of the growing plant.