Ellagitannin-rich bioactive extracts of Tuberaria lignosa: insights into the radiation-induced effects in the recovery of high added-value compounds
| Autor: | Colm O'donnell, Lillian Barros, José Pinela, Amilcar Antonio, Miguel A. Prieto, Beatriz Oliveira, Isabel Ferreira, Ana Maria Carvalho |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Radiation induced
Bioactive extracts 01 natural sciences Antioxidants Tuberaria lignosa chemistry.chemical_compound 0404 agricultural biotechnology Ellagitannin Chromatography High Pressure Liquid Punicalagin chemistry.chemical_classification Chromatography Plant Extracts Chemistry 010401 analytical chemistry Extraction (chemistry) In vitro toxicology 04 agricultural and veterinary sciences General Medicine Cistaceae 040401 food science Hydrolyzable Tannins 0104 chemical sciences Gamma Rays 13. Climate action Polyphenol Food Science |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 2042-650X 2042-6496 |
| DOI: | 10.1039/c7fo00500h |
| Popis: | Ellagitannins are polyphenols responsible for a number of bioactivities and health-promoting effects. These industrially important molecules can be affected by post-harvest treatments and recovery processes, but little is known about the irradiation-induced effects on their integrity, bioactivity and extractability. Herein, the impact of gamma radiation on the production of ellagitannin-rich extracts was investigated using Tuberaria lignosa as a case study. These effects were compared with those induced in flavonoids and organic acids. The extracts were particularly rich in hydrophilic antioxidants (measured by in vitro assays). The recovery of different phytochemicals was favoured by longer extraction times. Ellagitannins (mainly punicalagin derivatives) were extracted better from samples irradiated at 5 kGy and were not significantly affected by the 10 kGy dose. However, the total contents of flavonoids and organic acids were decreased by the consequent increase in irradiation dose. Therefore, this study supports the use of gamma radiation for processing T. lignosa, aiming to obtain ellagitannin-rich bioactive extracts. The authors are grateful to the PRODER research project no. 53514 AROMAP for financial support of the work; to the Foundation for Science and Technology (FCT) of Portugal and FEDER under Programme PT2020 for financial support to CIMO (UID/AGR/00690/2013); to FCT/MEC for financial support to REQUIMTE/LAQV (UID/QUI/50006/2013 - POCI/01/ 0145/FERDER/007265); to FCT for the grants attributed to J. Pinela (SFRH/BD/92994/2013; funded by the European Social Fund and MEC through Programa Operacional Capital Humano (POCH)) and L. Barros (SFRH/BPD/107855/2015); to the Xunta de Galicia for financial support to M. A. Prieto info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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