The physicochemical properties of heat-induced ovalbumin (OVA) gels co
ntaining fatty acid salts (FAS) were investigated. Water-holding abili
ty and transparency markedly increased in the presence of Sodium capra
te or sodium laurate. Ar 9% of the protein concentration transparent a
nd hard gels formed; at 7%, transparent and soft gels formed. Scanning
electron microscopy showed that the transparent gels had a more homog
eneous structure than turbid gels without FAS. Differential scanning c
alorimetry indicated that denaturation temperature of OVA was decrease
d and the peaks became broader after addition of FAS.