Journal
FOODS
Volume 9, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/foods9081008
Keywords
coffee silverskin; chemical characterization; toxicological analysis; extrusion; extreme vertices mixture design; product development
Categories
Funding
- CONACYT
- FORDECYT [292474]
- Centro de Investigacion y Asistencia en Tecnologia y Diseno del Estado de Jalisco, A.C. (CIATEJ)
- Universidad de Guadalajara (UDG)
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The evaluation of by-products to be added to food products is complex, as the residues must be analyzed to demonstrate their potential use as safe foods, as well as to propose the appropriate process and product for recycling. Since coffee is a very popular beverage worldwide, the coffee industry is responsible for generating large amounts of by-products, which include the coffee silverskin (CS), the only by-product of the roasting process. In this work, its characterization and food safety were evaluated by chemical composition assays, microbiological determinations, aflatoxin measurements and acute toxicity tests. The results showed that CS is safe for use in food, in addition to providing dietary fiber, protein and bioactive compounds. An extruded cereal-based ready-to-eat food product was developed through an extreme vertices mixture design, producing an extruded food product being a source of protein and with a high fiber content. Up to 15% of CS was incorporated in the extruded product. This work contributes to the establishment of routes for the valorization of CS; nevertheless, further research is necessary to demonstrate the sustainability of this food industry by-product.
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