Extraction of Essential Oil from Laurel Leaves by Using Microwaves

Bayramoglu B., ŞAHİN S., Sumnu G.

SEPARATION SCIENCE AND TECHNOLOGY, vol.44, no.3, pp.722-733, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 44 Issue: 3
  • Publication Date: 2009
  • Doi Number: 10.1080/01496390802437271
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.722-733
  • Keywords: Aroma compounds, essential oil, Laurus nobilis L, solvent-free microwave extraction (SFME), NOBILIS L.
  • Middle East Technical University Affiliated: Yes


The effects of microwave power and time in solvent-free microwave extraction (SFME) on the yield and composition of the essential oil obtained from laurel (Laurus nobilis L.) leaves were studied. The extraction was also performed by hydrodistillation as a control. Specific gravities and refractive indices of the essential oils obtained by different methods and at various conditions were also examined. The main constituent of laurel essential oil was 1,8-cineole (630-730mg/mL). Essential oils obtained by SFME and hydrodistillation were comparable with respect to both yield and composition while the process time was reduced by 55-60% when SFME was used.