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International Journal of Plant Based Pharmaceuticals
e‑ISSN 2791-7509 Open Access · CC BY 4.0
Vol. 2 · Issue 2 · 2022 Aug 3, 2022 Research Articles

Morphology, biological and chemical profiling of three Polyscias species, endemic to Mauritius

MB
Minu Gupta Bhowon University of Mauritius, Faculty of Science, Department of Chemistry, Réduit 80837, Republic of Mauritius Mauritius
LC
Lee Suan Chua Universiti Teknologi Malaysia, Institute of Bioproduct Development, Johor Bahru, 81310 UTM Skudai, Malaysia Malaysia
SJ
Shobha Jawaheer University of Mauritius, Faculty of Science, Department of Biosciences and Ocean Studies, Réduit 80837, Republic of Mauritius Mauritius
AS
Ayeshna D. Soodhowa University of Mauritius, Faculty of Science, Department of Chemistry, Réduit 80837, Republic of Mauritius Mauritius
SJ
Sabina Jhaumeer Laulloo Corresponding University of Mauritius, Faculty of Science, Department of Chemistry, Réduit 80837, Republic of Mauritius sabina@uom.ac.mu Mauritius
Pages239-251 PublishedAug 3, 2022 LicenseOpen Access
Full Text
IJPBP 2 VOL 2 · 2
VOL 2 · NO 2 · 2022 View issue

Abstract

The aim of the study is to screen the morphological, anatomical, biological, and chemical profiles of the leave extracts of endemic Polyscias species namely P. dichroostachya (PD), P. gracilis (PG), and P. mauritiana (PM) from Mauritius. The morphology and anatomy of the leaves were studied using a microscope. Phytochemical screening of extracts using LC-MS/MS was carried out by ionization in both positive and negative modes. The leaves are pinnately compound, hypostomatic, dorsiventral, with a prominent mid vein with secretion cavities, and they can be distinguished by their midrib shape and anatomy. From the molecular mass and fragmentation data, 31 terpenoid saponins, 19 flavonoids, 17 acids, 7 terpenes, and 10 miscellaneous compounds including pyrrolidines and acetylenes in different extracts (hexane, ethanol, and aqueous) were identified. Extracts from the three species using DPPH radical scavenging activity exhibited good to moderate antioxidant activities with IC 50 values in the range of 2.1-70.8 mg/ml and the ethanolic extract of PD showing the highest activity. Aqueous extracts of PG and PM potently inhibited alpha-glucosidase with IC 50 values of 0.50 and 2.62 mg/ml. The different leaf extracts exhibited moderate activity against a panel of gram-positive and gram-negative bacteria. This is probably the first report on the extensive chemical profiling and morphology of these endemic Polysias spp. from Mauritius and the results indicate that these leaf extracts have beneficial health properties and are thus worth exploiting further.

Keywords

#Polyscias #Anatomy #Morphology #Phytochemicals #Antioxidant activity #Anti-glucosidase

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Copyright (c) 2022 Minu Gupta Bhowon, Lee Suan Chua, Shobha Jawaheer, Ayeshna D. Soodhowa, Sabina Jhaumeer Laulloo

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