Luis-Villaroya, Adrián Espina, Laura García-Gonzalo, Diego Bayarri, Susana Pérez, Consuelo Pagán, Rafael Bioactive properties of a propolis-based dietary supplement and its use in combination with mild heat for apple juice preservation Int. j. food microbiol. 10.1016/j.ijfoodmicro.2015.03.020 2015 2015