Development of Stable Microemulsions Containing Laurel Essential Oil Using Amylopectin and Gum Arabic as Natural Emulsifiers

Berber M., Çelebi Uzkuç N., Uzkuç H., Kuzu K., Hoşoğlu M., Toğay S., ...More

CHEMISTRY & BIODIVERSITY, vol.22, no.11, 2025 (SCI-Expanded, Scopus) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 11
  • Publication Date: 2025
  • Doi Number: 10.1002/cbdv.202501219
  • Journal Name: CHEMISTRY & BIODIVERSITY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, EMBASE, MEDLINE
  • Keywords: bioactive properties, laurel essential oil, microemulsion, microwave-assisted hydrodistillation, volatile compounds
  • Çanakkale Onsekiz Mart University Affiliated: Yes

Abstract

This study aimed to develop food-grade microemulsions of laurel essential oil (L-EO) (MEs) stabilized with amylopectin (L-AP) and gum arabic (L-GA) and to determine characteristic properties of the MEs at different pH and temperatures during storage. L-EO was extracted using the microwave-assisted hydrodistillation technique. The prepared ME droplets ranged in size range from 328 to 347 nm in L-AP (pH 6.0) and from 327 to 432 nm in L-GA (pH 3.0). The total phenolic content and antioxidant capacity were 170.60 mg/L gallic acid equivalent (GAE) and 0.93 mM Trolox/mL in L-AP, respectively, while total phenolic content was 243.10 mg/L GAE and antioxidant capacity was 1.19 mM Trolox/mL in L-GA. Additionally, the MEs demonstrated relatively potent antimicrobial activity against Escherichia coli, Bacillus cereus, and Staphylococcus aureus strains. The main volatile compounds of L-EO were identified as 1,8-cineole (33.4%), sabinene (8.4%), and linalool L (6.6%).