Chemical and Sensory Characteristics of Extruded Snack from Selected Aerial Yam (Dioscorea Bulbifera) Cultivar and African Breadfruit (Treculia Africana) Seed.

This study determined the influence of extrusion cooking on chemical and sensory characteristics of a selected cultivar of aerial yam flour (AYF) and African breadfruit seed flour (ABF) blends. Blends (68:32, 84:16, 88:12, 56:44, 77:23, 53:47, 59:41, 74:26, and 64:36) of AYF:ABF were formulated using response surface methodology and chemically analyzed. Each blend was mixed with same quantities of ingredients, hydrated to 17.5% moisture, and extruded at barrel temperature (120°C) and screw speed (70 rpm). Extruded snacks were evaluated for some chemical and sensory properties. Data were analyzed using ANOVA at α0.05. Variation in blends significantly affected carbohydrate (76.58–69.55%), protein (8.80–13.59%), phenol (3.24–2.01 mg/g), and phytate (0.81–0.34 mg/g) contents of extruded snacks. Highest overall acceptability of the snack by the sensory evaluation panelists was 7.02. Extrusion cooking of flour blends of the selected cultivar of Dioscorea bulbifera and Treculia africana produced highly nutritious and acceptable snacks for human consumption. [ABSTRACT FROM AUTHOR]