Effect of alkaline extrusion on the physicochemical and functional properties of the whole andean corn flour

Authors

  • Natalia Ester Domínguez Centro Interdisciplinario de Investigaciones en Tecnologías y Desarrollo Social para el NOA (CIITeD)-CONICET. Facultad de Ingeniería, Universidad Nacional de Jujuy, San Salvador de Jujuy, Argentina. https://orcid.org/0000-0002-9689-2984
  • Rita Marisol Miranda Centro Interdisciplinario de Investigaciones en Tecnologías y Desarrollo Social para el NOA (CIITeD)-CONICET. Facultad de Ingeniería, Universidad Nacional de Jujuy, San Salvador de Jujuy, Argentina. https://orcid.org/0000-0002-3966-7457
  • María Alejandra Giménez Centro Interdisciplinario de Investigaciones en Tecnologías y Desarrollo Social para el NOA (CIITeD)-CONICET. Facultad de Ingeniería, Universidad Nacional de Jujuy, San Salvador de Jujuy, Argentina.
  • Manuel Oscar Lobo Centro Interdisciplinario de Investigaciones en Tecnologías y Desarrollo Social para el NOA (CIITeD)-CONICET. Facultad de Ingeniería, Universidad Nacional de Jujuy, San Salvador de Jujuy, Argentina. https://orcid.org/0000-0003-0646-0940
  • Norma Cristina Sammán Centro Interdisciplinario de Investigaciones en Tecnologías y Desarrollo Social para el NOA (CIITeD)-CONICET. Facultad de Ingeniería, Universidad Nacional de Jujuy, San Salvador de Jujuy, Argentina. https://orcid.org/0000-0001-6773-2247

DOI:

https://doi.org/10.26461/24.04

Keywords:

modified flour, whole grain, techno-functional properties

Abstract

The objective of this work was to study the techno-functional properties of alkaline
extruded Cuzco corn flour (HMEA) obtained by Ca(OH)2 addition in the extrusion process and to compare it with those of corn flour obtained by a traditional extrusion process (HME). The native meal was conditioned at moistures of 30, 35, 40 and 45% (w/w) and extruded in a single-screw extruder at 80 °C. For alkaline extrusion, 0.25 g of Ca(OH)2 100 g of flour was added. The addition of Ca(OH)2 in the extrusion process significantly affected the techno-functional properties of HMEA by increasing the solubility index (WSI), decreasing the water absorption index (WAI) and oil retention capacity (ORC) with
respect to those of HME. The alkaline treatment decreased the degree of gelatinization with respect to HMEA, obtaining values between 31.80 and 57.90% and increasing the initial gelatinization temperature from 69 to 73 °C. The gel firmness of the treated flours ranged from 0.26 to 0.33 N and 0.50 to 0.77 N for HMEA and HME respectively. Alkaline extrusion modifies the techno-functional properties of cuzco corn flour by reducing its
water absorption and controlling the degree of gelatinization, obtaining flours with an intermediate cooking degree.

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Published

2022-11-30

How to Cite

Domínguez, N. E., Miranda, R. M., Giménez, M. A., Lobo, M. O. ., & Sammán, N. C. (2022). Effect of alkaline extrusion on the physicochemical and functional properties of the whole andean corn flour. INNOTEC, (24 jul-dic), e600. https://doi.org/10.26461/24.04

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