Efeito dos métodos de secagem e extração sobre a atividade antioxidante da beterraba
The beet is a purplish red tuberous root due to the presence of betalains, which are great antioxidants. The aim of this work was to evaluate drying methods (freeze and oven drying) and extraction methods (reflux and ultrasound) regarding to the beet bioactivity. DPPH and ABTS methods were used to d...
| Autor principal: | Kopp, Barbara Miranda |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2021
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/24612 |
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| Resumo: |
The beet is a purplish red tuberous root due to the presence of betalains, which are great antioxidants. The aim of this work was to evaluate drying methods (freeze and oven drying) and extraction methods (reflux and ultrasound) regarding to the beet bioactivity. DPPH and ABTS methods were used to determine antioxidant activity and the content of flavonoids and total phenolic compounds to determine bioactive compounds. In addition, the content of beet minerals, moisture, ashes, proteins, lipids and fibers were also determined. Extraction performed with the aid of ultrasound resulted in better values of antioxidant activity and bioactive compounds. The same behavior was observed for freeze-dried samples. |
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