Dietary Fiber Molecular Structure

Lignin lignin or lignen is a complex chemical compound.

Dietary fiber molecular structure. Insoluble dietary fibers include celluloses some hemicelluloses and lignins. Dietary fiber also known as bulk or roughage includes all the parts of plant food that our bodies cannot digest or absorb. 70 soluble dietary fibers include β glucans pectins gums barley and hemicelluloses which are rich in fruits oats barley and beans. Soluble fiber which dissolves in water is generally fermented in the colon into gases and physiologically active by products such as short chain fatty acids produced in the colon by gut bacteria.

It has two main components. Dietary fiber british spelling fibre or roughage is the portion of plant derived food that cannot be completely broken down by human digestive enzymes. Lignin is a highly cross linked complex polymer of phenylpropane units. The differences between ß glucan linkages and chemical structure are significant in regards to solubility mode of action and overall biological activity.

Dietary fiber can be classified as soluble and insoluble based on the chemical properties.