Policaju-based coatings were applied on ???Tommy Atkins??? mangoes and the effects of four different treatments on mango shelf-life were evaluated under storage condition at 4???C and 82 % of relative humidity over 28 days. The surface tension of mangoes was found to be 29.04 mN m???1; the dispersive and polar components were 27.57 mN m???1 and 1.47 mN m???1, respectively, and the critical surface tension was 22.7 mN m???1. A significantly lower mass loss was observed in all mangoes treated with Policaju-based coatings. For all applied treatments, no significant variation in the total soluble solids and pH was detected over the experimental storage time. The results show that Policaju-based coatings have a positive effect on the shelf-life extension of mangoes at low storage temperatures (4???C). ; Coordena????o de Aperfei??oamento de Pessoal de N??vel Superior, Brazil (Capes, Brazil) ; Funda????o para a Ci??ncia e a Tecnologia (FCT) - SFRH/BD/23897/2005)