Starch and flour are related terms, but they refer to different things.
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Starch:
- Definition: Starch is a complex carbohydrate that is the primary storage form of energy in plants. It consists of long chains of glucose molecules.
- Source: Starch is found in various plant-based foods, such as potatoes, corn, rice, and wheat.
- Appearance: In its pure form, starch is a white, tasteless, and odorless powder.
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Flour:
- Definition: Flour is a powder made by grinding grains, roots, or seeds. It often contains starch, but it also includes other components such as proteins, fats, and fiber.
- Source: Flour can be made from various sources, including wheat, rice, corn, and other grains or legumes.
- Appearance: The color and texture of flour can vary depending on the source. For example, wheat flour is commonly white or brown, while cornmeal is yellow.
In summary, starch is a specific type of carbohydrate found in plants, while flour is a broader term referring to a powder made by grinding grains, roots, or seeds. Flour often contains starch, but it also includes other components, making it more diverse in terms of composition compared to pure starch. Wheat flour, for example, is a common type of flour that contains starch, proteins (such as gluten), fats, and other nutrients.