Has antifungal activity against C.albicans 586 (EC(50)=6.2 uM), C.parapsilosis ATCC 22019 (EC(50)=2.2 uM), C.krusei ATCC 14243 (EC(50)=2.5 uM) and C.krusei 80 (EC(50)=5.4 uM). Has no activity against C.neoformans, C.tropicalis or T.glabrata. By salicylic acid and by laminarin oligosaccharides. Belongs to the thaumatin family.