• Nor Dalila Nor Affandi Universiti Teknologi MARA
  • Siti Nadiah Shamsul Anuar Universiti Teknologi MARA
  • Muhd Fauzi Safian Universiti Teknologi MARA
  • Nur'ain Yusof Universiti Teknologi MARA
Keywords: Geraniol essential oil, microencapsulation, spray dry, SEM


Geraniol oil is one of the essential oils, which can act as an insect repellent, natural pesticides and antimicrobial. It also exhibits a good chemopreventive action, that could represent a new class of cancer treatment agents which opening up new avenues for research.  One of the concerns of the Geraniol essential oils is that the essential oils are very volatile. Due to this problem, the current study investigated the formation of microencapsulated Geraniol oil powder to protect them against degradation and evaporation, so that their stabilities are enhanced. In the study, both natural sources of gum Arabic and sodium alginate were used as a wall material to prepare Geraniol oil microcapsules using the spray drying technique since the technique is relatively simple and continuous. The microcapsules were prepared at three different amounts of Geraniol oil which were 0.9 ml, 2.7 ml and 1.8 ml, respectively. From the analysis, the diameter of microcapsules varied which were in the range of 1 to 24.636 µm. Microcapsules produced by 1.8 ml and 2.7 ml concentrations exhibited single discrete particles, whereas microcapsules produced by 0.9 ml had cluster particles. The feasibility to form microcapsules from Geraniol essential oils may offer a potential for further development of the textiles mosquito repellent.

Original Research Articles