the incidence of rot during storage. It was suggested that a wax emulsions contain wax levels equal to 12% might be the best concentration for retain the incidence of rot in tangerine citrus var. Siam Banjar. Exceeding that amount of wax greatly increase the viscosity of the emulsion from a free-flowing emulsion to a thick, slow flowing emulsion, and thereby create an environment that causes anaerobic respiration. If a thicker layer of wax is applied to the fruit surface, it becomes an undesirable barrier between the external and internal atmosphere and restricts exchange of respiratory gases (CO2 and O2). This may result in anaerobic respiration, resulting in fermentation and development of an off flavor. Similar results were also reported by (Tietel et al., 2010) who observed the development of off flavor in ‘Mor’ mandarin fruits coated with higher concentration of wax during storage at 20°C. Waxing can be detrimental to tangerines if it is applied too thick, making this treatment unsuitable for this fruits. Hence, the critical point of the coating application is the concentration of the wax emulsion. In other words, too thin wax emulsion might not work effectively in retaining the decay incidence, while too thick wax emulsion might