Green technology to obtain antioxidants from coffee waste

Feb 19, 2020

cafe Medianet

Source: www.ecoticias.com

19/02/2020

A research team from the University of Córdoba has achieved substances that enhance the antioxidant benefits of food and pharmaceutical products from remnants of the coffee industry.

In a process where the so-called ‘green’ solvents apply, los expertos desarrollan un método más rápido y eficiente para la extracción de estos componentes.

The research group seeks to give value to coffee waste by recovering these healthy substances and minimizing the generation of waste.


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Así, en un estudio publicado por la revista Separation and Purification Technology, los investigadores demuestran que los disolventes llamados supramoleculares, permiten obtener extractos ricos en compuestos de valor añadido para otras industrias a partir de residuos de alimentos a un bajo coste y de manera rápida.

Los disolventes supramoleculares (SUPRAS) son líquidos con una estructura interna diminuta, formada por agregados del tamaño de micras o nanómetros, un diámetro mil veces menor al grosor de un cabello.

Their synthesis is very simple and inexpensive, they have low toxicity and are sustainable, since they can be obtained from renewable sources. Ingredients that are widely used in food and cosmetics are used to facilitate their use in these industries.

El término supramolecular fue acuñado por este equipo de investigación y hoy día es usado por toda la comunidad científica. “También son conocidos como disolventes ‘verdes’ o ‘inteligentes’ ya que, además, tienen la capacidad de modificarse en presencia de un estímulo externo, como puede ser la temperatura o la adición de sales, y volver a su estado natural una vez que recupera sus características iniciales.

Esto permite que sean muy funcionales y versátiles”, indica la investigadora de la Universidad de Córdoba Ana Ballesteros, co-author of the article.

In addition, the extracts obtained from the coffee residues showed a high antioxidant capacity and antimicrobial effects suitable for use as supplements in food and cosmetics.

“The extraction with SUPRAS offers fast, simple and low-cost methods and has a high potential to be applied directly to the extraction of bioactive by-products from the food industry, como es el caso del café”, añade la investigadora.

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