Development of nanoemulsions containing Lavandula dentata or Myristica fragrans essential oils: Influence of temperature and storage period on physical-chemical properties and chemical stability

•Nanoemulsions containing essential oil of Myristica fragrans or Lavandula dentata with hydrophilic and lipophilic surfactants were developed through emulsification under high agitation and presenting good physicochemical characteristics.•The developed formulations did not influence the chemical composition of the oils.•Effect of storage conditions (refrigeration temperature, room temperature, and a controlled climatic chamber) were assessed in nanoemulsions for their chemical and physical-chemical properties and suggests that formulations presented intended responses and good stability over storage at room temperature and refrigeration.•Storage of nanoemulsions containing Myristica fragrans essential oils at refrigeration and room temperature for 3 months’ and 15 days, respectively, maintained physical-chemical quality and chemicals components compared with free oil.•Significant protection in Lavandula dentata essential oil content was noticed in the oil—nanoemulsion associations only at room temperature.