KK14(R) is an analog of the de novo synthetic peptide KK14, which exhibits antifungal activity against Fusarium culmorum , Penicillium expansum and Aspergillus niger , with MIC s of 6.25, 12.5 and 12.5 μg/mL, respecitvely. KK14(R) exhibits good heat- and pH-stability. KK14(R) exhibits cytotoxicity against cells Caco-2 and RAW264.7.