title: Screening soybean (grain and vegetable) genotypes for nutrients and anti-nutritional factors.
abstract: Fifty six genotypes of grain-type soybean and 17 genotypes of vegetable-type soybean collections were analyzed for protein and oil content, trypsin inhibitor, and lipoxygenase activities. The protein and oil content ranged from 36.9 to 47.9% and from 13.3 to 23.0% for different accessions in grain- and vegetable-type soybeans, respectively. Trypsin inhibitor and lipoxygenase activities ranged from 22.0 to 47.0 trypsin inhibitor units/mg meal and from 482 to 6265 lipoxygenase units/min/mg meal for grain- and vegetable-type soybeans, respectively. Significant correlations (r = -0.62 and -0.52, P less than 0.05) were found between protein and oil, and between protein and trypsin inhibitor. A significant positive correlation (r = 0.42, P less than 0.05) was also calculated for oil and lipoxygenase activity. Several genotypes of soybean and vegetable soybean (plant introductions 423905, 417330, 417223, 171451, 200506, 200523, 417124, 227687, 203402, 445842, 203399, 423852, 416771, FC 31927, Avoyelles, and Sooty) showed good nutritional potential and may be useful in a breeding program to improve the nutritional quality of soybean. Screening for essential amino acids, fatty acids, and trace minerals for selected genotypes is underway.
authors.affiliation: Cooperative State Research Service, Virginia State University, Petersburg 23803.
authors.forename: A I
authors.initials: AI
authors.lastname: Mohamed
authors.forename: M
authors.initials: M
authors.lastname: Rangappa
mesh_terms: D005838:Genotype; D008084:Lipoxygenase / Q000032:analysis; D009753:Nutritive Value; D010938:Plant Oils / Q000032:analysis; D010940:Plant Proteins / Q000032:analysis; D013025:Glycine max / Q000737:chemistry* / Q000201:enzymology / Q000235:genetics; D014361:Trypsin Inhibitors / Q000032:analysis
chemical_list: D010938:Plant Oils; D010940:Plant Proteins; D014361:Trypsin Inhibitors; D008084:Lipoxygenase