Chemical composition and antinutrient content of three Lupinus species from Jalisco, Mexico
2000
Ruiz-López, M. A. | García-López, P. M. | Castañeda-Vazquez, H. | Zamora, Juan Francisco | Garzón-De la Mora, P. | Bañuelos Pineda, J. | Burbano, C. | Pedrosa, M. M. | Cuadrado Hoyos, María Carmen | Muzquiz, M.
In this study, the proximal chemical analysis and contents of antinutritional factors (lectins, antitrypsin activity, cyanogenic glycosides, alkaloids, phytates and α -galactosides) of Lupinus exaltatus, L. reflexus, and L. mexicanus seeds were determined. The seeds of these lupins comprised 384.1, 388.0, 367.0 g/kg protein, which contained all the essential amino acids for human beings except glutamine and asparagine in their seed protein. OnlyL. exaltatus was free from lectins. Trypsin inhibitor concentrations ranged from 1.12 to 2.05 TIU/mg. Cyanogenic glycosides were present at low concentrations in the studied lupins. Total alkaloid content ranged from 14.0 to 44.0 g/kg and phytate content ranged from 11.1 to 1.856 g/kg. The main α -galactosides found in seeds were raffinose, stachyose, verbacose and ajucose. Stachyose was the predominant sugar in the studied species. Therefore, these wild lupins could be considered a good source of protein after a suitable reduction in the content of alkaloids. © 2000 Academic Press.
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