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Chemical and Enzymatic Hydrolysis of Anthraquinone Glycosides from Madder Roots by Goverdina C. H. Derksen; Martijn Naayer; Teris A. van Beek; Anthony Capelle; Ingrid K. Haaksman; Henk A. van Doren; Æde de Groot is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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## Abstract For the production of a commercially useful dye extract from madder, the glycoside ruberythric acid has to be hydrolysed to the aglycone alizarin which is the main dye component. An intrinsic problem is the simultaneous hydrolysis of the glycoside lucidin primeveroside to the unwanted mutagenic aglycone lucidin. Madder root was treated with strong acid, strong base or enzymes to convert ruberythric acid into alizarin and the anthraquinone compositions of the suspensions were analysed by HPLC. A cheap and easy method to hydrolyse ruberythric acid in madder root to alizarin without the formation of lucidin turned out to be the stirring of dried madder roots in water at room temperature for 90 min: this gave a suspension containing pseudopurpurin, munjistin, alizarin and nordamnacanthal. Native enzymes are responsible for the hydrolysis, after which lucidin is converted to nordamnacanthal by an endogenous oxidase. Copyright © 2003 John Wiley & Sons, Ltd.

Who reads Chemical and Enzymatic Hydrolysis of Anthraquinone Glycosides from Madder Roots?

Author

Goverdina C. H. Derksen; Martijn Naayer; Teris A. van Beek; Anthony Capelle; Ingrid K. Haaksman; Henk A. van Doren; Æde de Groot

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0958-0344)

Published

2003

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)