Texture analysis
The firmness of dairy ice cream samples was evaluated using an equipment called as TA-XT2i Texture Analyzer. The firmness of the ice cream samples based on the maximum force (Kg) to penetrate the ice cream showed that different fat sources was significantly affected the dairy ice cream firmness (P>0.05; Table 3). However, an increase in the addition ratio of perilla oil reduced the firmness of the dairy ice cream. The dairy ice cream with butter: perilla oil at 25:75 had lower firmness than that of the control dairy ice cream containing no perilla oil.