Preprint Article Version 1 This version is not peer-reviewed

Impact of Copper Oxide Nanoparticles on Enhancement of Gymnemic Acid and Phenolic Compounds Using Cell Suspension Culture of Gymnema sylvestre (Retz.) R. Br

Version 1 : Received: 27 April 2019 / Approved: 28 April 2019 / Online: 28 April 2019 (12:09:11 CEST)

A peer-reviewed article of this Preprint also exists.

Chung, I.-M.; Rajakumar, G.; Subramanian, U.; Venkidasamy, B.; Thiruvengadam, M. Impact of Copper Oxide Nanoparticles on Enhancement of Bioactive Compounds Using Cell Suspension Cultures of Gymnema sylvestre (Retz.) R. Br. Appl. Sci. 2019, 9, 2165. Chung, I.-M.; Rajakumar, G.; Subramanian, U.; Venkidasamy, B.; Thiruvengadam, M. Impact of Copper Oxide Nanoparticles on Enhancement of Bioactive Compounds Using Cell Suspension Cultures of Gymnema sylvestre (Retz.) R. Br. Appl. Sci. 2019, 9, 2165.

Journal reference: Appl. Sci. 2019, 9, 2165
DOI: 10.3390/app9102165

Abstract

Gymnema sylvestre is a pharmacological plant which has a rich source of bioactive compounds specifically gymnemic acid (GA) and phenolic compounds (PC) that used for pharmaceutical industries. Sources for naturally occurring bioactive compounds are limited, due to geographical and seasonal variations; on the other hand, it is commercially in demand. Biosynthesis of G. sylvestre phytochemicals through in vitro culture often enhanced by elicitation. The use of cell suspension cultures (CSC) has interested serious attention on the production of essential phytochemicals. The current study is aimed at improving the contents of GA and PC in G. sylvestre CSC using the copper oxide nanoparticles (CuO NPs). Callus was obtained on MS medium with 2.0 mg/L 2,4-dichlorophenoxyacetic acid (2,4-D), 0.1 mg/L kinetin (KIN), phytoagar (8.0 g/L), and sucrose (30 g/L). The above medium devoid of agar was used for the initiation of CSC. The CSC was treated with three levels of CuO NPs (1, 3 or 5 mg/L) to enhance the production of GA and PC. The greatest amount of GA (89.25 mg/g dry cell mass, DCM), total phenolic (245.10 mg/g), and flavonoid (4.57 mg/g) in CSC were achieved when G. sylvestre cells were treated for 48 h with 3 mg/L CuO NPs. Also, the biomedical potential (antioxidant, antidiabetic, anti-inflammatory, antibacterial, antifungal and anticancer activities) were also high in the CuO NPs (3 mg/L) treated CSC extracts of G. sylvestre. CuO NPs elicitation of CSC significantly increased production of GA (9-fold), and PC than non-elicited CSC in G. sylvestre.

Subject Areas

Gymnema sylvestre; cell suspension cultures; copper oxide nanoparticles; gymnemic acid; phenolic compounds; pharmacological activity

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