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The essential oil composition, antimicrobial activity and antioxidant assay of the extracts from aerial parts of Dicliptera roxburghiana Nees.

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Title The essential oil composition, antimicrobial activity and antioxidant assay of the extracts from aerial parts of Dicliptera roxburghiana Nees.
 
Creator Prasad, Rajendra
Melkani, Anand B.
Bisht, Lalit S.
Mohan, Lalit
Sah, Archana N.
Mehra, Shubhangi
 
Subject Antibacterial
Antifungal
Antioxidant assay
Dicliptera roxburghiana Nees
Essential oil composition
 
Description 591-601
Dicliptera roxburghiana Nees. is a shrub belonging to the family Acanthaceae. The present study was undertaken
because of the medicinal importance of this genus and the need for a report on its essential oil composition and antibacterial
activity. Essential oil from the whole aerial part, including flowers, of the plant was extracted by steam distillation method
and analysed by GC-FID and GC-MS. In all, sixty-nine compounds constituting 85.5% of the total oil composition have
been identified. The essential oil contained high concentrations of non-terpenic compounds (33.5%), while the terpenoid
compounds had a higher concentration still (52.0%). The unidentified portion contained several minor constituents with
ambiguous Mass Spectra. The major constituents of the essential oil were identified as β-panasinsene (11.2%), phytol
(10.0%), pentadecanal (8.6%), cis, cis, cis-7,10,13-hexadecatrienal (7.6%), linalool (4.2%) and cameroonan -7-α-ol (4.2%).
The antioxidant activity of four different extracts (whole aerial parts)was performed by two methods, namely, DPPH assay
and metal chelating assay. Significant results were obtained in each case at 100 μg/mL concentration. For antibacterial
screening, the essential oil exhibited the highest activity against Gram-negative Pasteurella multocida (15.66±0.57 mm) and
Gram-positive Bacillus subtilis (13.00±1.00 mm). The highest activity of ethyl acetate extract was recorded against
Gram-negative Pasteurella multocida (12.00±0.00 mm). The hexane extract of the plant was found to be most active
against Gram-positive Enterococcus faecalis (13.33±0.57 mm). The chloroform extract showed the highest activity against
Gram-negative Xanthomonas phaseoli (16.33±1.15 mm) and Gram-positive Enterococcus faecalis (12.00±1.00 mm). For
methanol extract, the highest activity was observed against Gram-negative Agrobacterium tumefaciens (10.66±0.57 mm)
and Gram-positive Enterococcus faecalis (10.33±0.57 mm). The essential oil exhibited the highest antifungal activity
against the fungal strains, namely, Aspergillus niger (17.66±0.57 mm), followed by Aspergillus flavus (16.66±0.57 mm) and
Candida albicans (16.33±0.57 mm). The essential oil and extracts from this plant species may be utilised to control various
microbial infectious diseases and serve as an antioxidant supplement.
 
Date 2024-01-04T09:37:40Z
2024-01-04T09:37:40Z
2024-01
 
Type Article
 
Identifier 0976-0512 (Online); 0976-0504 (Print)
http://nopr.niscpr.res.in/handle/123456789/63159
https://doi.org/10.56042/ijnpr.v14i4.5889
 
Language en
 
Relation Int. cl. (2021.01)− A61K 36/00, A61P 31/00, A61P 39/00
 
Publisher NIScPR-CSIR,India
 
Source IJNPR Vol.14(4) [December 2023]