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Open AccessFeature PaperArticle

A Comparative Study on the Phenolic Composition and Biological Activities of Morus alba L. Commercial Samples

1
Department of Analytical Chemistry, Medical University of Gdansk, 80-416 Gdansk, Poland
2
Department of Pharmaceutical Biochemistry, Medical University of Gdansk, 80-211 Gdansk, Poland
3
Department of Biochemistry, Medical University of Gdansk, 80-211 Gdansk, Poland
*
Author to whom correspondence should be addressed.
Molecules 2019, 24(17), 3082; https://doi.org/10.3390/molecules24173082
Received: 24 July 2019 / Revised: 22 August 2019 / Accepted: 24 August 2019 / Published: 25 August 2019
(This article belongs to the Special Issue Natural Polyphenols and Health)
Morus alba L. (white mulberry) has been commonly used as a functional food and for medicinal purposes. Hence, the aim of the study was to compare the phenolic profile of white mulberry commercial samples in relation to their antioxidant potential and acetylcholinesterase (AChE) inhibitory activity. It is of interest to determine whether herbal products originating from different commercial sources differ in their phenolic profiles. For this purpose, a simple and rapid high-performance liquid chromatography (HPLC) method was used for the separation and determination of ten major phenolic compounds. Total phenolic (TPC), total flavonoid (TFC), and total phenolic acid contents (TPAC), as well as l(+)-ascorbic acid (ASA) contents, were determined. The antioxidant potential was assessed by DPPH (2,2-diphenyl-1-picrylhydrazyl radical) scavenging activity and ferric-reducing/antioxidant power (FRAP) assay, while the AChE inhibitory activity was determined by the Ellman assay for water extracts. The study revealed that excluding two herbal products containing fruits and a sample containing leaves of white mulberry, yerba mate and lemon, the remaining samples were generally consistent in terms of phenolic composition as well as antioxidant potential and AChE inhibitory activity. This reflects the health-promoting properties of the samples under study. Moreover, the results showed that the water extracts of white mulberry were richer in phenolic compounds and presented higher antioxidant activity than the hydromethanolic extracts. However, the water extracts showed low inhibitory activity against AChE. Moreover, the correlation analysis indicated a high positive relationship between phenolic composition and antioxidant activity in extracts of white mulberry. Overall, the obtained results may be useful in the evaluation of new dietary supplements and food products. The water extracts of white mulberry could be used for antioxidant purposes, while the hydromethanolic extracts could be incorporated in antioxidant formulations. View Full-Text
Keywords: Morus alba L.; phenolic composition; antioxidant activity; acetylcholinesterase inhibitory Morus alba L.; phenolic composition; antioxidant activity; acetylcholinesterase inhibitory
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MDPI and ACS Style

Polumackanycz, M.; Sledzinski, T.; Goyke, E.; Wesolowski, M.; Viapiana, A. A Comparative Study on the Phenolic Composition and Biological Activities of Morus alba L. Commercial Samples. Molecules 2019, 24, 3082. https://doi.org/10.3390/molecules24173082

AMA Style

Polumackanycz M, Sledzinski T, Goyke E, Wesolowski M, Viapiana A. A Comparative Study on the Phenolic Composition and Biological Activities of Morus alba L. Commercial Samples. Molecules. 2019; 24(17):3082. https://doi.org/10.3390/molecules24173082

Chicago/Turabian Style

Polumackanycz, Milena; Sledzinski, Tomasz; Goyke, Elzbieta; Wesolowski, Marek; Viapiana, Agnieszka. 2019. "A Comparative Study on the Phenolic Composition and Biological Activities of Morus alba L. Commercial Samples" Molecules 24, no. 17: 3082. https://doi.org/10.3390/molecules24173082

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