Effectiveness of compound and single essential oil maltodextrin encapsulation against pathogenic fungi in vitro

Abstract Encapsulation of essential oils using a drum-drying technique is an effective method to increase the stability and extend the shelf life of essential oils. This study was to evaluate the effectiveness of single and compound essential oil encapsulation formulations that are produce by drum dryer technique against pathogenic fungi in vitro . Encapsulation of bioactive compounds from single formulas (citronella, eucalyptus) and/or mixtures of several essential oils (citronella, clove, eucalyptus) using maltodextrin coating materials. The method used single and mixed formulas in the form of nano-emulsions, which are mixed with coating materials in a ratio of 1:2 and then dried with a drum drier at a certain temperature and condition to form microencapsulation powder that protects the oil from environmental degradation. The results of the effectiveness test showed that the mixed formula (compound) of citronella, clove, and eucalyptus oils was more effective than the single formula of citronella or eucalyptus in vitro against plant pathogenic fungi using the media poisoning and volatile compound methods. The drum dryer technique at a temperature of 120-124°C, a pressure of 2 bar, and 13-15 rpm has the potential to dry encapsulated essential oils as biopesticides.