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

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%), beta-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.