Non-digestible items should also be avoided, as they will build up in the system and require more frequent sludge removal.

Pectin is found most often in fruits, and is soluble in water but non-digestible.

Dietary fiber consists of non-digestible carbohydrates and lignin, which are a structural component in plants.

The remaining, non-digestible material which the microbes cannot feed upon, along with any dead bacterial remains constitutes the digestate.

It is a non-digestible polymeric antioxidant.

In comparison, the non-digestible polysaccharide cellulose is also a beta-glucan but is non-soluble.

Probiotics contain live friendly bacteria, while prebiotics supply the non-digestible sugars particularly liked by your natural bacteria.

Prebiotics are non-digestible food ingredients that stimulate the growth and/or activity of bacteria in the digestive system in ways claimed to be beneficial to health.

Prebiotics are defined as non-digestible food ingredients that beneficially affect the host by stimulating the growth and/or activity of beneficial bacteria in the colon.

According to the IOM, functional fibre "consists of isolated, non-digestible carbohydrates that have beneficial physiological effects in humans".

It slides through dungeon corridors, absorbing everything in its path, digesting everything organic and secreting non-digestible matter in its wake.

A third class of dietary material, fiber (i.e., non-digestible material such as cellulose), is also required, for both mechanical and biochemical reasons, although the exact reasons remain unclear.

When prey is swallowed whole, owls regurgitate pellets of bone and other non-digestible bits about 6 to 10 hours later, usually in the same location where the prey was consumed.

Like olestra, jojoba oil is edible but non-caloric and non-digestible, meaning the oil will pass through the intestines unchanged and can cause a stool condition called steatorrhea.

"Took me forever to train my cook on that--even with the non-digestible fat versions, the cook tended to get upset and think that I was developing bad dietary habits.

Gum base is the non-nutritive, non-digestible, water-insoluble masticatory delivery system used to carry sweeteners, flavors and any other desired substances in chewing gum and bubble gum.

Prebiotics are non-digestible ingredients in foods that are used to spur the growth of probiotic bacteria in the body by providing a suitable environment in which the probiotics themselves can flourish.

Feathers contain high amounts of non-digestible proteins, but researchers hope that, through fermentation with B. licheniformis, they can use waste feathers to produce cheap and nutritious feather meal to feed livestock.

One source of these surplus calories excreted is obviously the non-digestible cell-wall material which forms much of the dietary fibre itself: This is taken into account when calorie figures are given for carbohydrate foods.

This means that the non-digestible calories in the plant cell walls, which will eventually be expelled in the faeces, have already been subtracted in order to give a realistic calorie figure for each carbohydrate food.

Resistant starch is a type of non-digestible, fermentable fiber that is resistant to amylase digestion in the small intestine, and is broken down to short-chain fatty acids by microflora in the large intestine.

Poor quality diets (those that contain a large amount of non-digestible material) have lower concentrations of nutrients, so animals must process a greater total volume of poor-quality food to extract the same amount of energy as they would from a high-quality diet.