| Antioxidant activity, ascorbic acid, phenolic compounds and sugars of wild and commercial Tuberaria lignosa samples: Effects of drying and oral preparation methods. | |
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MedLine Citation:
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PMID: 22953820 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The antioxidant activity and phytochemical composition (ascorbic acid, free sugars and phenolic compounds) of decoctions and infusions of wild and commercial samples of Tuberaria lignosa (Sweet) Samp. Aerial parts were evaluated and compared. Among wild samples, the effects of the drying method (freeze or shade-drying) on those parameters were studied. Infusion of the freeze-dried wild sample gave the highest levels of sugars, while infusion of shade-dried wild sample and decoction of the freeze-dried sample presented higher ascorbic acid and phenolic compounds content (including ellagitannins and flavonoids) than the other samples. The last two samples also revealed higher antioxidant activity, in some cases even higher than Trolox. Decoctions gave lower amounts of disaccharides than infusions, which seemed to be hydrolysed, increasing the content of monosaccharides. Commercial samples showed the lowest content in phenolic compounds, mainly in ellagitannins and flavonoids, and also the lowest antioxidant activity. This work gives scientific evidence to the traditional medicinal uses of wild Tuberaria lignosa, highlighting the interest of its decoctions and infusions as a source of bioactive compounds and functional beverages. |
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Authors:
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José Pinela; Lillian Barros; Montserrat Dueñas; Ana Maria Carvalho; Celestino Santos-Buelga; Isabel C F R Ferreira |
Publication Detail:
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Type: Journal Article Date: 2012-05-11 |
Journal Detail:
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Title: Food chemistry Volume: 135 ISSN: 0308-8146 ISO Abbreviation: Food Chem Publication Date: 2012 Dec |
Date Detail:
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Created Date: 2012-09-07 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7702639 Medline TA: Food Chem Country: England |
Other Details:
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Languages: eng Pagination: 1028-35 Citation Subset: IM |
Copyright Information:
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Copyright © 2012 Elsevier Ltd. All rights reserved. |
Affiliation:
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CIMO/Escola Superior Agrária, Instituto Politécnico de Bragança, Campus de Santa Apolónia, Apartado 1172, 5301-855 Bragança, Portugal. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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