What are some health benefits of intrinsic dietary fibers compared to isolated fibers?

Intrinsic dietary fibers, which are naturally present in plant cell matrices, may have different and potentially greater health benefits compared to isolated fibers. Studies have shown that whole-food interventions focusing on intrinsic fibers from grains, fruits, vegetables, legumes, and nuts have been linked to improvements in cognitive function, inflammation, lipid metabolism, and glucose metabolism. These fibers have also been found to modulate gut microbiota composition, leading to positive health outcomes.

How does food processing affect the structure of intrinsic fibers?

Food processing can significantly impact the structure of intrinsic dietary fibers. Various processing techniques, such as drying, freezing, boiling, steaming, and mechanical destruction (milling or grinding), can alter the three-dimensional structure of fibers. While some processing methods may preserve the overall tissue structure to some extent, others can cause damage to the cell walls and potentially disrupt the fiber structure. Additionally, the extraction of isolated fibers from plant cell matrices involves extensive processing, which can further modify the fiber structures.

Are there any human studies on the impact of intrinsic fibers on gut microbiota and overall health outcomes?

Yes, there are human studies on the impact of intrinsic fibers on gut microbiota and overall health outcomes. Whole food interventions focusing on intrinsic fibers from grains, fruits, vegetables, legumes, and nuts have been linked to improvements in cognitive function, inflammation, lipid metabolism, and glucose metabolism. These fibers have also been found to modulate gut microbiota composition, leading to positive health outcomes.