Fiber content of peanut butter
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Dietary Fiber Content in Standard Peanut Butter
Peanut butter made from traditional peanut cultivars typically contains between 4.35% and 8.53% fiber, depending on the peanut variety and processing methods used. For example, peanut butter produced from indigenous cultivars in Pakistan was found to have fiber content ranging from 4.95% to 8.53%. Another study measured the fiber content of standard peanut butter at 4.35%, with a slight increase to 4.87% when fortified with moringa leaf powder.
Enhancing Fiber Content: Additives and Fortification
Peanut Shells and Skins
Adding peanut shells or skins to peanut butter can significantly boost its fiber content. Peanut shells are especially high in fiber (46.6%), and incorporating 5–15% peanut shell powder into peanut butter increased the total fiber content by up to 2.6 times compared to the control, making the product a better source of dietary fiber. Similarly, peanut skins, which are about 55% fiber (mostly insoluble), can be added at levels of 1.25–5% to peanut butter, allowing the product to qualify as a "good source of fiber".
Plant-Based Additives
Other plant-based ingredients, such as moringa leaf powder and apricot fiber, have also been used to increase the fiber content of peanut butter. Fortifying peanut butter with moringa leaf powder at a 70:30 ratio increased the fiber content from 4.35% to 4.87%. Adding apricot fiber at levels up to 16% also raised the total fiber content, with 4% apricot fiber being the most preferred in sensory evaluations.
Seed Blends
Blending peanut butter with other seeds like flax, chia, and sesame can further enhance its fiber content. A formulation containing 70% peanut, 15% flax, 10% chia, and 5% sesame seeds achieved a crude fiber content of 15.63%, which is much higher than standard peanut butter.
Commercial and Snack Food Applications
Some snack food products use peanut butter mixed with dietary fiber sources to achieve a total fiber content of 5–30% by weight, depending on the formulation. These products are designed to be high in dietary fiber and may use various fiber-rich additives to reach the desired content.
Conclusion
Standard peanut butter contains about 4–8% fiber, depending on the peanut variety and processing. The fiber content can be significantly increased by adding peanut shells, skins, plant-based powders, or blending with other seeds, with some formulations reaching over 15% fiber. These enhancements not only improve the nutritional value but also diversify the types of peanut butter available to consumers134567.
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