Determinación del Contenido de Polifenoles Totales, Flavonoides y Actividad Antioxidante de 34 Cafés Comerciales de Panamá
The main objective of this research was to determine the content of total polyphenols, flavonoids and antioxidant activity of 34 commercial coffees in Panama. Coffee is one of the most popular beverages in the world, and it is considered to have nutraceutical properties due to its content of bioacti...
| Autores Principales: | Vega Ríos, Aracelly, De León, Javier, Reyes, Stephany M. |
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| Formato: | Artículo |
| Idioma: | Español Español |
| Publicado: |
Información Tecnológica
2019
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| Materias: | |
| Acceso en línea: |
http://jadimike.unachi.ac.pa/handle/123456789/87 |
| Sumario: |
The main objective of this research was to determine the content of total polyphenols, flavonoids and
antioxidant activity of 34 commercial coffees in Panama. Coffee is one of the most popular beverages in the
world, and it is considered to have nutraceutical properties due to its content of bioactive substances. The
parameters of interest in this study were determined spectrophotometrically. Total polyphenols content of
pure and mixed coffees was in the range of 28.60 to 46.82 and 11.17 to 16.10 mg of gallic acid (GAE)/g of
coffee respectively. Flavonoids content was 22.16 to 38.29 and 9.36 to 14.92 mg of catechin/g of coffee
respectively, and antioxidant activity was in the range of 0.11 to 0.20 and 0.025 to 0.061 mmol of trolox
(TE)/g of coffee respectively. A correlation of R2 = 0.69 was found between antioxidant activity and total
polyphenols for pure coffees and a correlation of R2 = 0.04 for mixed coffees. These results allow
concluding that total polyphenols are substances that importantly contribute to the antioxidant capacity of
coffee. |
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