NDLI: Phenolic extracts of <i>Rubus ulmifolius</i> Schott flowers: characterization, microencapsulation and incorporation into yogurts as nutraceutical sources

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Food & Function Vol - 5 Issue - 5

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Phenolic extracts of Rubus ulmifolius Schott flowers: characterization, microencapsulation and incorporation into yogurts as nutraceutical sources

Content Provider	Royal Society of Chemistry (RSC)
Author	Fernandes, Isabel P. Martins, Ana Carvalho, Ana Maria Barros, Lillian Barreiro, Filomena Santos-Buelga, Celestino Ferreira, Isabel C. F. R.
Copyright Year	2014
Abstract	Rubus ulmifolius Schott (Rosaceae), known as wild blackberry, is a perennial shrub found in wild and cultivated habitats in Europe, Asia and North Africa. Traditionally, it is used for homemade remedies because of its medicinal properties, including antioxidant activity. In the present work, phenolic extracts of R. ulmifolius flower buds obtained by decoction and hydroalcoholic extraction were chemically and biologically characterized. Several phenolic compounds were identified in both decoction and hydroalcoholic extracts of flowers, ellagitannin derivatives being the most abundant ones, namely the sanguiin H-10 isomer and lambertianin. Additionally, comparing with the decoction form, the hydroalcoholic extract presented both higher phenolic content and antioxidant activity. The hydroalcoholic extract was thereafter microencapsulated in an alginate-based matrix and incorporated into a yogurt to achieve antioxidant benefits. In what concerns the performed incorporation tests, the obtained results pointed out that, among the tested samples, the yoghurt containing the microencapsulated extract presented a slightly higher antioxidant activity, and that both forms (free and microencapsulated extracts) gave rise to products with higher activity than the control. In conclusion, this study demonstrated the antioxidant potential of the R. ulmifolius hydroalcoholic extract and the effectiveness of the microencapsulation technique used for its preservation, thus opening new prospects for the exploitation of these natural phenolic extracts in food applications.
Starting Page	1091
Ending Page	1100
Page Count	10
File Format	HTM / HTML PDF
ISSN	20426496
Volume Number	5
Issue Number	6
Journal	Food & Function
DOI	10.1039/c3fo60721f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Schott Europe Asia North Africa Rubus ulmifolius Schott AG Rosaceae Rubus Shrub Antioxidant Rosa canina Decoction Ellagitannin Isomer Yogurt Micro-encapsulation
Content Type	Text
Resource Type	Article
Subject	Medicine Food Science

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