Abstract: In order to examine the effect of fat and oil on rheological properties and microstructure of wheat flour dough, wheat four with added palm stearin was used to prepare wheat flour dough. It was found that palm stearin could increase dough formation time, stability time and stretch resistance, improve dough rheological properties and wheat flour quality. The microscopic structure of wheat flour dough with added palm stearin showed even more prtoein granules and more smooth surface of strach granules. Collectively, farinograph and tensile tests demonstrated that the optimal content of palm stearin in wheat flour was 6%.

Key words: fat and oil, dough, property, quality, microstructure