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Molecules 2014, 19(9), 15162-15179; doi:10.3390/molecules190915162

Comparative Studies on Polyphenolic Composition, Antioxidant and Antimicrobial Activities of Schisandra chinensis Leaves and Fruits

1
Department of Pharmaceutical Botany, Iuliu Hațieganu University of Medicine and Pharmacy, 12 I. Creangă Street, Cluj-Napoca 400010, Romania
2
Department of Pharmaceutical Technology and Biopharmaceutics, Iuliu Hațieganu University of Medicine and Pharmacy, 12 I. Creangă Street, Cluj-Napoca 400010, Romania
3
Department of Organic Chemistry, Iuliu Hațieganu University of Medicine and Pharmacy, 12 I. Creangă Street, Cluj- Napoca 400010, Romania
4
Department of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 3-5 Manăştur Street, Cluj-Napoca 400372, Romania
5
Department of Physics of Nanostructured Materials, National Institute for Research and Development of Isotopic and Molecular Technologies 65-103, Donath Street, Cluj-Napoca 400010, Romania
6
Department of Pharmacognosy, Iuliu Hațieganu University of Medicine and Pharmacy, 12 I. Creangă Street, Cluj-Napoca 400010, Romania
7
Department of Analytical Chemistry and Instrumental Analysis, Iuliu Hațieganu University of Medicine and Pharmacy, 4 L. Pasteur Street, Cluj-Napoca 400010, Romania
8
Family Medicine, Department M3 Clinical Sciences Internal Medicine, University of Medicine and Pharmacy, 38 G. Marinescu Street, Târgu Mures 540139, Romania
*
Authors to whom correspondence should be addressed.
Received: 30 July 2014 / Revised: 12 September 2014 / Accepted: 12 September 2014 / Published: 22 September 2014
(This article belongs to the Section Natural Products)
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Abstract

The aim of this paper was to evaluate the antioxidant and antimicrobial activities and the polyphenolic content of Schisandra chinensis (Turcz.) Baill. leaves and fruits. The leaves are an important source of flavonoids (35.10 ± 1.23 mg RE/g plant material). Qualitative and quantitative analyses of the polyphenolic compounds were achieved using a HPLC-UV-MS method. The main flavonoid from the leaves was isoquercitrin (2486.18 ± 5.72 μg/g plant material), followed by quercitrin (1645.14 ± 2.12 μg/g plant material). Regarding the fruit composition, the dominant compound there was rutin (13.02 ± 0.21 μg/g plant material), but comparing with the leaves, fruits can be considered a poor source of phenolic compounds. The antioxidant activity was evaluated by DPPH, TEAC, hemoglobin ascorbate peroxidase activity inhibition (HAPX), inhibition of lipid peroxidation catalyzed by cytochrome c and EPR spectroscopic assays, revealing a better antioxidant activity for the S. chinensis leaves extract. In the antimicrobial assay, S. chinensis leaves extract showed efficient activities against the targeted bacteria, being more active than the fruits extract. The results suggest the leaves of S. chinensis as a valuable source of antioxidant compounds with significant antioxidant activity. View Full-Text
Keywords: Schisandra chinensis; polyphenols; antioxidants; antimicrobial activity; leaves; fruits Schisandra chinensis; polyphenols; antioxidants; antimicrobial activity; leaves; fruits
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Mocan, A.; Crișan, G.; Vlase, L.; Crișan, O.; Vodnar, D.C.; Raita, O.; Gheldiu, A.-M.; Toiu, A.; Oprean, R.; Tilea, I. Comparative Studies on Polyphenolic Composition, Antioxidant and Antimicrobial Activities of Schisandra chinensis Leaves and Fruits. Molecules 2014, 19, 15162-15179.

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