Abstract

Common bean (Phaseolus vulgaris L.) is a widely cultivated legume valued for its nutritional quality, although anti-nutrients can limit its benefits. Chilean landraces exhibit high variability in nutritional and antinutritional traits, yet information on their sugar composition, particularly raffinose family oligosaccharides, is scarce. This study characterized the genetic diversity of 197 Chilean landraces and nutritionally evaluated a representative subset. Clustering analysis identified four genetic groups, one of which (CCB3) included most typical Chilean varieties. Twenty-three diverse landraces were selected for agronomic and nutritional assessment. Coscorrón showed the highest yield (5733 kg ha?1) with a moderate harvest index (0.39). Palo exhibited the highest protein (30.3 g 100 g?1), total phenolic compounds (153.6 mg GAE 100 g?1), and key minerals such as P (0.75 g 100 g?1), K (1.98 g 100 g?1), Mg (0.24 g 100 g?1), Zn (52.6 mg kg?1), and Cu (13.6 mg kg?1). Negro Curi INIA had the highest Fe content (167.0 mg kg?1). Total sugars ranged from 6.2 to 8.2 g 100 g?1, with Mantequilla and Perdiz showing the lowest raffinose (73.9 mg 100 g?1) and stachyose (3317.9 mg 100 g?1), respectively. Mycotoxin levels (DON and ZEA) were low. These findings highlight the nutritional potential of Chilean landraces for functional food development. © 2025 Elsevier Inc.