Prairie View AM University 1 article published in JoVE Biochemistry Analysis and Specification of Starch Granule Size Distributions Ming Gao1, Mahta Moussavi1, Deland Myers1 1Cooperative Agriculture Research Center, College of Agriculture and Human Science, Prairie View A&M University Presented here is a procedure for reproducible and statistically valid determinations of starch granule size distributions, and for specifying the determined granule lognormal size distributions using a two-parameter multiplicative form. It is applicable to all granule sizing analyses of gram-scale starch samples for plant and food science research.