Characterization of phenolics and biological activities of different solvent extracts from Withania somnifera fruit

Saari N., . and Mehmood T., . and Qadir R., . and Tabassam Q., . and Anwar F., . Characterization of phenolics and biological activities of different solvent extracts from Withania somnifera fruit. pp. 915-924. ISSN 22317546

The present work studies the profiling of phenolic bioactive and in vitro biological (anticancer antioxidant and antimicrobial) activities of different solvent extracts from Withania somnifera fruit. Anticancer activity was performed using potato-disc assay and Agrobacterium tumefaciens. While antibacterial and antifungal evaluation was done by using disc diffusion method against bacterial (Staphylococcus aureus S. epidermidis Escherichia coli and Klebsiella pneumonia) and fungal (Aspergillus flavus and Fusarium oxysporum) strains. Among different extraction solvents used n-hexane extract exhibited the highest inhibition of tumour initiation (64) whereas ethyl acetate (15) was the lowest by using potato-disc assay. Highest total phenolic and total flavonoid contents were noted for methanolic (69.10 GAE mg/g DW) and n-hexane (29.45 CE mg/g DW) extracts respectively. For antioxidant potential 2 2 1-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging (IC‚‚) and reducing power EC‚‚ were noted to be superior (0.6 and 2.0 mg/mL respectively) for n-hexane extract. All the tested extracts showed considerable antibacterial and antifungal activity with the highest growth inhibition zones for K. pneumoniae (31.70 mm) and A. flavus (27.09 mm) were shown by n-hexane extract. High Performance Liquid Chromatographic (HPLC) analysis of individual phenolics (gallic acid 2 288.48 mg/kg) indicated the highest contents of these compounds in n-hexane extract which might explain the potent biological activities of this extract. Our findings revealed that the bioactive present in the tested fruit had significant potential as anticancer antibacterial and antifungal agents. Further studies are needed to elucidate the mechanism of actions of isolated bioactive against specific diseases such as cancer especially in the case of n-hexane fraction.

Full text available from: Official URL: http://www.ifrj.upm.edu.my/27%20(05)%202020/DONE%2...

Abstract

The present work studies the profiling of phenolic bioactive and in vitro biological (anticancer antioxidant and antimicrobial) activities of different solvent extracts from Withania somnifera fruit. Anticancer activity was performed using potato-disc assay and Agrobacterium tumefaciens. While antibacterial and antifungal evaluation was done by using disc diffusion method against bacterial (Staphylococcus aureus S. epidermidis Escherichia coli and Klebsiella pneumonia) and fungal (Aspergillus flavus and Fusarium oxysporum) strains. Among different extraction solvents used n-hexane extract exhibited the highest inhibition of tumour initiation (64) whereas ethyl acetate (15) was the lowest by using potato-disc assay. Highest total phenolic and total flavonoid contents were noted for methanolic (69.10 GAE mg/g DW) and n-hexane (29.45 CE mg/g DW) extracts respectively. For antioxidant potential 2 2 1-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging (IC‚‚) and reducing power EC‚‚ were noted to be superior (0.6 and 2.0 mg/mL respectively) for n-hexane extract. All the tested extracts showed considerable antibacterial and antifungal activity with the highest growth inhibition zones for K. pneumoniae (31.70 mm) and A. flavus (27.09 mm) were shown by n-hexane extract. High Performance Liquid Chromatographic (HPLC) analysis of individual phenolics (gallic acid 2 288.48 mg/kg) indicated the highest contents of these compounds in n-hexane extract which might explain the potent biological activities of this extract. Our findings revealed that the bioactive present in the tested fruit had significant potential as anticancer antibacterial and antifungal agents. Further studies are needed to elucidate the mechanism of actions of isolated bioactive against specific diseases such as cancer especially in the case of n-hexane fraction.

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Item Type:	Article
AGROVOC Term:	Withania somnifera
AGROVOC Term:	Phenolic compounds
AGROVOC Term:	Antioxidants
AGROVOC Term:	Antibacterial properties
AGROVOC Term:	Chemical composition
AGROVOC Term:	Plant extracts
AGROVOC Term:	In vitro
AGROVOC Term:	High performance liquid chromatography
AGROVOC Term:	Growth inhibition
AGROVOC Term:	Pathogenic fungi
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/9409

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