PROPIEDADES FÍSICAS, MECÁNICA Y MICROESTRUCTURA DE QUINUA (CHENOPODIUM QUINOA WILLD.) PARA USO AGROINDUSTRIAL
PROPIEDADES FÍSICAS, MECÁNICA Y MICROESTRUCTURA DE QUINUA (CHENOPODIUM QUINOA WILLD.) PARA USO AGROINDUSTRIAL
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DOI: https://doi.org/10.22533/at.ed.5712427055
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Palavras-chave: quinua, isotermas, microestructura, resistencia mecánica
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Keywords: quinoa, isotherms, microstructure, mechanical resistance
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Abstract: In this study, the relationship between water adsorption capacity and various characteristics of seven varieties of quinoa was investigated, with the aim of transforming them into raw flakes and highlighting their agroindustrial potential. The water adsorption capacity was evaluated at 10 water activity points using four mathematical equations, highlighting the Oswin model as the most appropriate. The physical properties were analyzed through images, revealing that the Illpa variety has larger grains, while Kancolla, Salcedo, Altiplano and Pasankalla have medium grains, and Negra Collana and Choclo Rosado have smaller grains. The mechanical property was evaluated with a texturometer, demonstrating that the maximum force exerted by quinoa varieties varies in a specific range. The microstructure was examined by scanning electron microscopy, observing the arrangement of starches in relation to water activity and its impact on the mechanical strength and the raw flake production process. The results highlighted the Salcedo INIA variety as the most suitable for the production of quinoa flakes. This comprehensive analysis provides valuable information for the agribusiness sector, identifying key characteristics that influence the quality of quinoa flakes and highlighting the importance of selecting specific varieties to optimize transformation processes.
- Ronald Astete Tebes