3. Results and discussion3.1. Punch propertiesFig. 1 shows breaking force and deformation of surimi gels withvarious vegetable oils at different concentrations. Oil concentrations significantly affected the breaking force of surimi gels(P < 0.05). Gels with higher oil concentration had significantlylower breaking force values. However, deformation had a slightlydecline with the increase of oil concentration. Other reports indicated that the addition of soybean oil did not cause much change indeformation values of surimi gels (Benjakul et al., 2004) or slightlydecreased them (Hsu & Chiang, 2002). Effects of vegetable oilconcentrations on the gel properties of surimi gels were consistentwith previous reports. As the oil content increased, keeping constant moisture level could decrease breaking force values signifi-cantly (Hsu & Chiang, 2002). Benjakul et al. (2004) added soybeanoil into surimi with the same moisture content, resulting in thereduction of breaking force.