1. Methods and Application of Food Composition Laboratory, Beltsville Human Nutrition Research Center, Agricultural Research Service, U.S. Department of Agriculture, Building 161, BARC-East, 10300 Baltimore Avenue, Beltsville, Maryland 20705, United States
2. Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, Michigan 48824, United States
3. Sugarbeet and Bean Research Unit, Agricultural Research Service, US Department of Agriculture, East Lansing, Michigan 48824, United States