RHEOLOGICAL EVALUATION OF AVOCADO OILS SUBJECTED TO DIFFERENT EXTRACTION PROCESSES

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DOI:

https://doi.org/10.20873/vol13n120263

Palavras-chave:

Secagem, Extração por solvente, Prensagem mecânica

Resumo

Avocado is a fruit with high lipid content in its pulp, making it a viable raw material for oil production. In this context, understanding the viscosity of the oil obtained from this fruit is important for identifying the effect of variations in processing conditions, as well as for evaluating the quality of the final product. Therefore, the objective of this study was to perform a rheological evaluation of avocado oils from the 'Breda' and 'Margarida' varieties. The pulps were subjected to different drying methods and distinct oil extraction processes. The rheological evaluation of the oils was carried out using a rheometer with a C50-1 spindle over a shear rate range of 0 to 1000 s⁻¹. The results showed that the avocado oils, regardless of the extraction method, exhibited non-Newtonian behavior at shear rates below 200 s⁻¹. Increasing the drying temperature reduced viscosity due to lower flow resistance, while the use of a vacuum attenuated this reduction. This behavior was similar to that observed in other vegetable oils, demonstrating the technological potential of avocado oil. However, further studies under different processing conditions are necessary to deepen the understanding of its rheological properties and industrial applications.

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2026-02-12 — Atualizado em 2026-02-13

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Doring Krumreich, F., Kuhn Rutz , J., do Espirito Santo de Jesus , F., Lubke Buss , G., Barboza Mendonça , C. R., Dellinghausen Borges , C., & Zambiazi , R. C. (2026). RHEOLOGICAL EVALUATION OF AVOCADO OILS SUBJECTED TO DIFFERENT EXTRACTION PROCESSES. DESAFIOS - Revista Interdisciplinar Da Universidade Federal Do Tocantins, 13(1), 43–54. https://doi.org/10.20873/vol13n120263 (Original work published 12º de fevereiro de 2026)