AO-04: Development of gluten-free couscous with rice-legumes supplementation

Abstract

Couscous is a traditional cereal product usually prepared using semolina; however, couscous may be produced with different flours as well as gluten-free flours. In this study, gluten-free couscous was prepared by supplementing rice flour with flours of field bean, chickpea and lentil (90/10 or 70/30 %, w/w). The objective of this study was to develop gluten-free couscous and determine the quality, texture, microstructure and sensory properties, which these properties were used for characterization. The different gluten-free couscous were developed according to a manufacture diagram in North East Algeria (Benatallah et al., 2008) and then a determination of the quality (grain size, yield, bulk density, color, water absorption capacity, disintegration degree and swelling index), texture profile (TPA), microstructure (SEM) and sensory properties was carried out, these properties being used for the characterisation of gluten-free couscous.

The results revealed that the gluten-free couscous had low water absorption capacity, low swelling and cohesion, and slightly high disintegration degree compared to the control couscous. Protein, lipid and ash contents were improved following the supplementation while lightness and hardness were negatively affected. Even though there was no gluten, the significant yield was obtained during production. Moreover, the quality, texture and sensory properties of gluten-free couscous were close to those of the control couscous. Gluten-free couscous production was successfully achieved for whom wants to consume gluten-free products as a lifestyle