Browsing by Author "Cunha, L.M."
Now showing 1 - 2 of 2
Results Per Page
Sort Options
- Bioactive compounds and reducing ability of medicinal herbal infusions: a regard over their labelsPublication . Baptista, N.; Costa, A.; Ferreira da Vinha, Ana; Nunes, A.; Alves, R.; Cunha, L.M.; Oliveira, M.B.P.P.Consumer interest in a healthy diet has been growing exponentially. Consequently, food industries provide, nowadays, an increasing number of products (including teas and infusions) that label beneficial health and/or well-being effects. In this work, a preliminary survey of several herbs commonly used in commercial mixtures for infusions (horsetail, lemongrass, green tea, fennel, St. John’s wort, senna and tilia) was performed. Infusions of single plants (n=13) and mixtures (n=18) were analyzed and their labels verified in order to identify possible gaps in their claims. Total phenolics, total flavonoids and tannins contents, as well as the reducing ability (using FRAP assay) of samples, were determined.
- Phytochemicals in food industry by-products: the case of coffee silverskinPublication . Costa, A.; Ferreira da Vinha, Ana; Alves, R.; Nunes, M.A.; Cunha, L.M.; Oliveira, M.B.P.P.Recovery of waste and added value by-products in the food industry is mandatory in a society that aims environmental, social and economic sustainability. It promotes waste reduction and gains instead of expenses. In the present study, we used coffee silverskin, a by-product (with no added value) of coffee roast industry, as a possible source of phytochemicals with antioxidant activity. Silverskin from three commercial coffee batches (a pure robusta and two blends with arabica and robusta coffees) were provided by a local coffee torrefaction industry.