what are biological fibres?
Supplement. In nutrition, a dietary fiber may be soluble or insoluble. A soluble fiber is one that is commonly found in fruits and beans and water soluble. An insoluble fiber is one that is found in whole-grain products and vegetables.It is indigestible and therefore passes directly through the digestive system.upplement. In nutrition, a dietary fiber may be soluble or insoluble. A soluble fiber is one that is commonly found in fruits and beans and water soluble. An insoluble fiber is one that is found in whole-grain products and vegetables.