Usually, a multiple preservative system, and /or the incorporation of hurdle technology, is needed to accomplish this goal. Preservatives should be effective at low concentrations in order to reduce costs, minimize toxicity effects, and not adversely affect the physical properties of the finished product.
Flax is full of fibre and is rich in omega-3 fatty acids. Carrots alone won't make you go to the bathroom. Full of fibre, raw carrots that are part of a healthy fibre-filled diet can improve your stool movement. Remember, eat them raw. Cooked carrots can lead to constipation. Beans, beans, the musical fruit.
1 Foods with soluble fiber include oatmeal, nuts, beans, lentils, apples and blueberries.  Insoluble fiber, which does not dissolve in water, can help food move through your digestive system, promoting regularity and helping prevent constipation. Foods with insoluble fibers include wheat, whole wheat bread, whole grain couscous, brown rice, legumes, carrots, cucumbers and tomatoes.