Nutritional composition, content of phenolic compounds and antioxidant properties of the four Mexican varieties of Ayocote beans (Phaseolus coccineus L.) were studied. Ayocote beans were found to be a promising source of proteins, carbohydrates, fibre and minerals. Sucrose (55.6-62.2 g/kg) and stachyose (24-24.4 g/kg) were considered as the major sugar and oligosaccharide, respectively. Glutamic acid was the most abundant amino acid (32.2 to 35.8 g/kg), while cysteine was present at the lowest concentration (2.3-2.4 g/100 kg). Purple variety contains the highest amount of total phenolic compounds (2075.9 mg GAE/kg), total flavonoids (1612.9 mg QE/kg) and total anthocyanins (1193.2 mg CGE/kg). This variety also exhibited the most effective antioxidant activities, which were evaluated by DPPH (17,040 µmol TE/kg) and ORAC (51,620 µmol TE/kg). The results obtained reveal a high potential for wider use of Ayocote bean as a remarkable source of bioactive compounds and health-promoting food.Características nutricionales y bioactivas del frijol Ayocote (Phaseolus coccienus L.): una leguminosa subutilizada cultivada en México RESUMEN Se estudiaron la composición nutricional, contenido de compuestos fenólicos y propiedades antioxidantes de cuatro variedades de Ayocote (Phaseolus coccineus L.) mexicano. Dicho cultivo mostró ser una buena fuente de proteínas, carbohidratos, fibra y minerales. La sacarosa (55.6-62.2 g/kg) y estaquiosa (24-24.4 g/kg) se identificaron como los principales azúcar y oligosacárido, respectivamente. En cuanto a aminoácidos, el ácido glutámico (32.2-35.8 g/kg) y la cisteína (2075.9 mg GAE/kg), son el de mayor y menor abundancia, respectivamente. En la variedad morada se cuantificaron las mayores concentraciones de compuestos fenólicos totales (2075.9 mg GAE/kg), flavonoides totales (1612.9 mg QE/kg) y antocianinas totales (1193.2 mg CGE/kg), así como presentar la mayor actividad antioxidante evaluándose por DPPH (17,040 µmol TE/kg) y ORAC (5162 µmol TE/kg). Los resultados obtenidos revelan un alto potencial para un uso más amplio del frijol Ayocote como una fuente prometedora de compuestos bioactivos y alimentos que promueven la salud. ARTICLE HISTORY

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This study reports the effect of the addition of oat bran and apple flour on the cooking quality, digestibility, antioxidant, nutritional and texture characteristics of a spaghetti-type pasta. Pasta samples were prepared by substituting 50% of durum wheat semolina with oat bran (OBP) or apple flour (AFP). AFP presented higher cooking loss and water absorption index than the control pasta prepared with 100% durum wheat semolina (WSP). The supplementation of pasta with oat bran increased the total dietary fiber content (16.43% w/w, dw), while apple flour decreased the protein content (11.16% w/w, dw). There was no significant difference in the resistant starch content among all pasta samples. The pasta samples made with 50/50 durum wheat semolina/oat bran and 50/50 durum wheat semolina/apple flour increased the antioxidant activity by ≈46% and ≈97%, respectively. The OBP and AFP samples had a similar texture to the control pasta. A 50% replacement of durum wheat semolina with oat bran in a pasta formulation decreased the caloric content and digestibility of its starch components. These attributes found in the oat bran pasta and apple flour pasta make them a healthy choice for the diet of people with specific nutritional needs.

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