Antimicrobial Activity of Microparticles Loaded with Short-chain Fatty Acids obtained by Spray Drying
Jane Mara Block, Rafael Luchtenberg,  Sheila Melo da Silveira, Lindomar Alberto Lerin, Santa Catarina Federal University, Florianopolis, SC, Brazil 

In this work Capsul ® (a modified starch), maltodextrin and  gum arabic microcapsules loaded with  short-chain fatty acids (SCFA) were obtained by spray drying and the antimicrobial activity (Minimum Inhibitory Concentration – MIC – and Minimum Bactericidal Concentration - MBC) was determined before and after the atomization process. The results for MIC and  MBC showed antimicrobial activity against all tested strains (Escherichia coli – ATCC 25922, Salmonella enteritidis – ATCC 13076, Staphylococcus aureus – ATCC 25923, Staphylococcus aureus – ATCC 29213, Listeria monocytogenes – ATCC 19117 and Listeria monocytogenes serotype 2 – ATCC 19112) before and after spray drying. Spray drying proved to be an effective technology  for obtaining a product with antimicrobial activity.