Abstract
Quinoa is unique for a human diet due to its excellent nutritional value. However, technological applications of quinoa have received less attention because of its gluten-free nature. In addition, although quinoa bran which is by-product of quinoa flour is used mainly as animal feed, it is a potential source of dietary fiber that has a positive effect on human health. In this study, it was aimed to investigate the effects of quinoa bran flour with different particle sizes on physical, textural and sensory properties of biscuits. For this purpose, quinoa bran flours were milled to 5 different particle sizes and added to the wheat flour biscuit at a constant level (25% of wheat flour). According to the results, the dry matter contents of the samples increased as the particle size of the quinoa bran flour decreased. Similarly, an increase in the color values of the biscuit was observed depending on the bran particle size. The textural and sensory characteristics of biscuit samples were decreased. This study reveals the changes in the properties of biscuits enriched with different sized quinoa bran flour.