The effect of basil and tragacanth gums on quality and shelf life of doughnut

Doughnut is one of the most important products in the world that frying in the oil, after the fermentation, dividing and shaping stages. Because of its high consumption in the country, its quality is of great importance. Today, additives such as gums, emulsifiers, enzymes and..., are used to improve the quality of baking products. Aware of the hazards of chemical additives, tend to use natural ones has increased. Therefore, the present study was conducted with the aim of investigating the effect of Basil and Tragacanth gums as natural additives on improvement of quality, sensory characteristics and shelf life of doughnut. For this purpose, Basil and Tragacanth gums in four levels (0, 0/3, 0/6 and 1%) has been added to the doughnut formulas, and moisture content, specific volume, texture and sensory properties of doughnuts were evaluated. The results showed that the use of Basil and Tragacanth gums at 1% increased moisture content and decreased firmness (two hours and one week after baking). Addition of Basil at 1% and Tragacanth at 0/6 %, together, increased the specific volume, shelf-life, sensory scores, color indexes and decreased firmness of doughnuts.