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Advisor(s)
Abstract(s)
Food industry is focused on the development of novel functional foods containing
health promoting natural ingredients. Natural antioxidants present important health benefits
like the prevention of several diseases related to oxidative stress [1,2]. Foeniculum
vulgare Mill. (fennel) is a source of those compounds with proved antioxidant potential
[3]. Herein, after evaluation of 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity
and reducing power of fennel (provided by Américo Duarte Paixão Lda.) decoction, we
propose its incorporation into cottage cheese (produced by Queijos Casa Matias Lda.).
Three groups of cottage cheese samples were prepared: control; samples with fennel decoction
(incorporated at EC25 value=0.35 mg/mL, previously determined by DPPH assay);
and samples with fennel powder (incorporated at 1.75 mg/mL, considering the decoction
yield=20%). The samples were submitted to an evaluation of DPPH scavenging activity and
reducing power immediately after the incorporations, and after 7 and 14 days of storage,
at 4 ºC. The incorporation of fennel improved the antioxidant activity of cottage cheese.
Samples incorporated with plant powder revealed higher antioxidant properties than
samples incorporated with decoction, either in 0 or 7 days of storage. After 14 days, cottage
cheese incorporated with fennel decoction gave the highest DPPH scavenging activity
(46.72±0.09 mg/mL). A decrease in the antioxidant potential of the cottage cheese with
fennel was observed along the shelf life. Nevertheless, it is important to highlight that the
samples still display antioxidant properties. Studies regarding the effects of the incorporation
of these natural ingredients on nutritional and chemical composition of cottage
cheese are in course
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Citation
Caleja, Cristina; Carocho, Márcio; Barros, Lillian; Oliveira, M.B.P.P.; Ferreira, Isabel C.F.R. (2016). Foeniculum vulgare Mill. as a natural ingredient to improve cottage cheese antioxidant properties. In Martins, Anabela (Ed.) II Encontro de Investigadores do Instituto Politécnico de Bragança: livro de resumos. Bragança: Instituto Politécnico. ISBN 978-972-745-179-1