Carbohydrate content of green beans
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Carbohydrate Content in Green Beans: Key Findings
Carbohydrate Composition in Green Beans (Phaseolus vulgaris)
Green beans (Phaseolus vulgaris) contain several types of carbohydrates, including soluble sugars, starch, pectins (a type of soluble dietary fiber), and neutral detergent fiber (NDF). The total carbohydrate content in whole green bean pods is about 37.75% by weight (377,500 ppm), with significant amounts of dietary fiber (20.8% or 208,000 ppm) also present. This makes green beans a moderate source of carbohydrates, with a notable portion coming from fiber.
Effects of Cooking on Carbohydrate Content
Different cooking methods affect the carbohydrate profile of green beans. All common cooking treatments—steaming, boiling, pressure cooking, and microwave cooking—reduce the concentrations of soluble sugars, starch, and pectins, while increasing the NDF content. Steaming causes the least reduction in carbohydrate content and the smallest increase in NDF, making it the best method for preserving carbohydrates in green beans.
Carbohydrate Content in Processed Green Bean Products
When green beans are used as an ingredient in processed foods, such as puddings, the carbohydrate content can vary depending on the concentration of green bean extract added. For example, a pudding with 30% green bean extract contains about 17.96% carbohydrates. This demonstrates that processed products can still provide a significant carbohydrate contribution, depending on the formulation.
Nutritional Role of Carbohydrates in Green Beans
Green beans are recognized as a source of carbohydrates, protein, fat, vitamins, and minerals. Their carbohydrate content, along with other nutrients, makes them a valuable food for addressing malnutrition and providing balanced nutrition. The presence of both digestible carbohydrates and dietary fiber supports their role in a healthy diet.
Conclusion
Green beans are a moderate source of carbohydrates, with a significant portion as dietary fiber. Cooking methods can reduce the carbohydrate content, with steaming being the most effective at preserving it. Processed green bean products also retain notable carbohydrate levels, making green beans a nutritious option for various diets1458.
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