Influence of Extrusion Cooking on In Vitro Digestibility,Physical and Sensory Properties of Brazilian Pine Seeds Flour (Araucaria Angustifolia) |
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Authors: | Manoela Estefânea Boff Zortéa‐Guidolin Carlos Wanderlei Piler de Carvalho Rossana Catie Bueno de Godoy Ivo Mottin Demiate Agnes Paula Scheer |
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Affiliation: | 1. Graduate Program in Food Engineering, Federal Univ. of Parana, Curitiba, PR, Brazil;2. Embrapa Food Technology, Rio de Janeiro, RJ, Brazil;3. Embrapa Forestry, Colombo, PR, Brazil;4. Food Engineering Dept. – State Univ. of Ponta Grossa, Ponta Grossa, PR, Brazil |
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Abstract: | Brazilian pine seeds (pinhão) are gluten‐free products derived from Araucaria angustifolia. The commercialization of these seeds is essentially associated with a low level of industrialization. In this context, extrusion cooking is a potential alternative for preparing extrudates of pinhão as a food product, which can be easily digested and is ready for human consumption. Brazilian pine seeds flour was processed in a single‐screw extruder following a central composite rotatable design. Three factors (independent parameters) were considered: moisture content (14 to 22 g/100 g), screw speed (100 to 250 rpm), and temperature in the 3rd heating zone (120 to 200 °C). The structural characteristics, in vitro digestibility and sensory acceptance were also evaluated. The resistant starch contents is almost reduced to zero after extrusion cooking while the slowly digestible starch content is increased. An increase in moisture positively affected the hardness and the luminosity (L*), although it negatively affected the volumetric expansion index, crispness, and color parameters (a*, b*, and ΔE). The experimental conditions of this study allowed the production of expanded extrudates from Brazilian pine seeds with good expansion, texture properties, and acceptance qualities. Thus, extrusion cooking was found to be a potential method for the industrialization of Brazilian pine seeds as a food product. |
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Keywords: | crispness extrusion cooking in vitro digestibility pinhã o snacks |
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