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Rodrigues TC, Gois IB, Fernandes RPM, Blank AF, Sandes RDD, Leite Neta MTS, Narain N, Arrigoni-Blank MDF. Chemical characterization and antimicrobial activity of essential oils from Croton grewioides Baill. accessions on the phytopathogen Xanthomonas campestris pv. campestris. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 193:105454. [PMID: 37248000 DOI: 10.1016/j.pestbp.2023.105454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 04/28/2023] [Accepted: 05/03/2023] [Indexed: 05/31/2023]
Abstract
Croton grewioides Baill. is an aromatic species with proven bioactive properties. Considering the potential of the species, the aim of this study was to chemically characterize and evaluate the in vitro antibacterial activity of the essential oils of C. grewioides on Xanthomonas campestris pv. campestris. The essential oils of the accessions of C. grewioides were extracted by the hydrodistillation method and analyzed by gas chromatography - mass spectrometry. For determination of the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of the essential oils and of the compound eugenol, the microdilution method was used at concentrations that ranged from 125 to 4000 μg.mL-1. Streptomycin sulfate was used as a positive control (12.5 to 100 μg.mL-1). Growth kinetics and the membrane permeability trial were evaluated for the concentrations 2×, 1×, 1/2×, 1/4×, and 1/8× MIC of the essential oil CGR-108. The major compounds identified in the essential oils were eugenol, methyl eugenol, and methyl chavicol. The essential oil of the accession CGR-108 had a lower MIC (> 500 and < 1000 μg.mL-1) and MBC equal to <2000 μg.mL-1. For eugenol, MIC was obtained with contractions >250 and < 500 μg.mL-1 and MBC with >500 μg.mL-1 and < 1000 μg.mL-1. A loss of cell viability of the bacteria was observed after 30 min of exposure to the essential oil of the accession CGR-108 at the concentrations of 2× and 1× MIC, which was proven by the fluorescence intensity with propidium iodide. The essential oils of Croton grewioides Baill. and the compound eugenol show antibacterial potential on Xanthomonas campestris pv. campestris.
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Affiliation(s)
- Taíse Conceição Rodrigues
- Department of Agricultural Engineering, Federal University of Sergipe, Av. Marechal Rondon s/n, 4100-000 São Cristóvão, Sergipe, Brazil
| | - Itamara Bomfim Gois
- Department of Agricultural Engineering, Federal University of Sergipe, Av. Marechal Rondon s/n, 4100-000 São Cristóvão, Sergipe, Brazil
| | | | - Arie Fitzgerald Blank
- Department of Agricultural Engineering, Federal University of Sergipe, Av. Marechal Rondon s/n, 4100-000 São Cristóvão, Sergipe, Brazil
| | - Rafael Donizete Dutra Sandes
- Department of Food Technology, Federal University of Sergipe, Av. Marechal Rondon s/n, 4100-000 São Cristóvão, Sergipe, Brazil
| | | | - Narendra Narain
- Department of Food Technology, Federal University of Sergipe, Av. Marechal Rondon s/n, 4100-000 São Cristóvão, Sergipe, Brazil
| | - Maria de Fátima Arrigoni-Blank
- Department of Agricultural Engineering, Federal University of Sergipe, Av. Marechal Rondon s/n, 4100-000 São Cristóvão, Sergipe, Brazil.
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