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Synthesis of resistant starches in plants.

The increased incidence in many countries in lifestyle diseases such as colorectal cancer, cardiovascular disease, and diabetes has led to an enhanced interest in disease-prevention measures that can be delivered to target populations through diet. Resistant starch (RS) is emerging as an important dietary component that has the potential to reduce the incidence of bowel health disorders. However, the range of crop species that can serve as effective sources of RS is limited. In this paper the state of knowledge of the starch biosynthesis pathway is reviewed and opportunities to manipulate crop genetics in order to generate additional sources of RS are discussed. The need for a "whole of chain" approach to delivery of RS to the consumer is highlighted because of the impact that different food-processing technologies can have in maintaining, enhancing, or destroying the RS potential of a raw material or food.