Redefining Bean Iron Biofortification: A Review of the Evidence for Moving to a High Fe Bioavailability Approach

Iron biofortification of the common bean ( Phaseolus vulgaris ) commenced in earnest ~18 years ago. Based on knowledge at time, approach for beans was simply to breed increased Fe concentration based 3 major assumptions: (1) The average is ~50 μg/g; (2) Higher results more bioavailable delivered absorption; (3) Breeding high a trait that can be achieved through traditional breeding and sustainable once sample released farmers. Current research indicates assumptions are not met countries East Africa, focus area biofortification. Thus, there need redefine For assumption 1, recent Africa 71 μg/g, thus about 20 μg/g higher than assumed value. 2, studies demonstrate does always equate absorption. Finally, 3, show strong environment genotype by effect concentration, making it difficult develop sustain concentrations. This paper provides an examination available evidence related above assumptions, offers alternative utilizing tools bioavailability bean.