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Natural Product Research
Formerly Natural Product Letters
Volume 35, 2021 - Issue 24
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Short Communications

Antioxidant role of morusin and mulberrofuran B in ethanol extract of Morus alba roots

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Pages 5993-5996 | Received 25 Jun 2020, Accepted 09 Aug 2020, Published online: 25 Aug 2020
 

Abstract

The white mulberry, Morus alba, is distributed worldwide and known for its antioxidant properties. Ethanol extract of six varieties of M. alba roots were studied (IZ 13/6, IZ 40, IZ 56/4, IZ 64, Indonesia and Tigreada). From variety IZ 40, two secondary metabolites were isolated and unambiguously identified by 2 D NMR experiments as morusin and mulberrofuran B. These were quantified in the varieties by liquid chromatography, recording 5.27–16.74% for the first, and 0.54–3.55% for the latter. Mulberrofuran B presented higher activity than morusin by phosphomolybdenum (1531.33 ± 20.28 mmol ascorbic acid/g) and ferrocyanide (14.39%) methods, ABTS (95.74 ± 4.21 µM) and DPPH (843.87 ± 10.65 µM) radical sequestration capacity, while morusin showed significant statistical correlation with antioxidant activity for some M. alba varieties. These results suggested that morusin influences antioxidant activity of M. alba in synergism with other compounds and can be a good chemical marker in this species.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by CNPq, Brazil, under Grant 304922/2018-8, 134397/2016-9, and CAPES.

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