Essential oil composition, antioxidant and antibacterial activity against Vibrio parahaemolyticus from five Lamiaceae species

ABSTRACT

In peneide shrimp, diseases caused by Vibrio species are the source of serious economic losses worldwide. Essential oils from Lamiaceae species are sources of bioactives for aquaculture, with potential antimicrobial and antioxidant activity. The aim was to investigate the chemical composition, antimicrobial activity and antioxidant effects of essential oils from five species of Lamiaceae against Vibrio parahaemolyticus. Approximately forty-eight components were identified and quantified by gas chromatography-mass spectrometry (GC-MS) and flame ionization detection (GC-FID). The predominant compounds were linalool (0.2–74.2%), eugenol (47.5%), 1,8-cineole (0.2–44.5%), camphor (0.2–31.2%), sabinene (0.4-13-4%), β-pinene (0.1–8.5%), thymol (51.0%) and p-cymene (1.7–26.4%). The essential oils presented values of Minimum Inhibitory Concentration and Bactericidal between 5.0–0.313 mg mL⁻¹ and effective antioxidant potential (IC₅₀: 0.11–16.15 mg mL⁻¹). Its main components have potential application in scavenging free radicals, inhibiting bacterial growth, important for the food and aquaculture industry.

KEYWORDS:

• Penaeus vannamei
• essential oil
• antimicrobial activity
• Lamiaceae
• antioxidant

Acknowledgement

The authors are also grateful to Mr. Francisco dos Santos Carvalho for laboratory technical assistance.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was financially supported by the Banco Nacional de Desenvolvimento Econômico e Social (BNDES), Ministério da Agricultura, Pecuária e Abastecimento (MAPA), The Brazilian Agricultural Research Corporation (Embrapa) and Fundação Eliseu Alves [project number 11.17.02.001.03.10].