Enzymatic routes for the production of mono- and di-glucosylated derivatives of hydroxytyrosol
► New eco-friendly syntheses of more hydrosoluble biophenols were proposed. ► A marine α-glucosidase and a commercial tyrosinase from mushroom were used. ► Hydroxytyrosol and tyrosol α-glycosidic derivatives were efficiently produced. ► Antioxidant activity of hydroxytyrosol α-glycosylated derivativ...
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Published in | Bioresource technology Vol. 115; pp. 79 - 83 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
England
Elsevier Ltd
01.07.2012
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Subjects | |
Online Access | Get full text |
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Summary: | ► New eco-friendly syntheses of more hydrosoluble biophenols were proposed. ► A marine α-glucosidase and a commercial tyrosinase from mushroom were used. ► Hydroxytyrosol and tyrosol α-glycosidic derivatives were efficiently produced. ► Antioxidant activity of hydroxytyrosol α-glycosylated derivatives was tested. ► The most interesting product is the (3,4-dihydroxyphenyl)ethyl-α-d-glucopyranoside.
In this work, a new eco-friendly procedure for the synthesis of hydroxytyrosol and tyrosol α-glycosidic derivatives was proposed by using the marine α-glucosidase from Aplysia fasciata, and a commercial tyrosinase from mushroom for the bioconversion of tyrosol glycosidic derivatives into the corresponding hydroxytyrosol products. New hydroxytyrosol mono- and di-saccharide derivatives were synthesized at final concentrations of 9.35 and 10.8g/l of reaction, respectively, and their antioxidant activity was evaluated by DPPH test. The best antioxidant agent resulted the (3,4-dihydroxyphenyl) ethyl-α-d-glucopyranoside; it showed a radical scavenging activity similar to that of the hydroxytyrosol, together with an increased hydrosolubility. This molecule could be a good response to many food industry demands, always in search of cheap antioxidants with nutritional properties to improve the nutritional value and the quality of foods. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0960-8524 1873-2976 |
DOI: | 10.1016/j.biortech.2011.10.073 |