EFFECTS OF KOCHO (Ensete ventricosem) FLOUR BLENDING WITH FLAXSEED (Linum usitatissimum L.) FLOUR ON NUTIRITIONAL QUALITY AND SENSORY ACCEPTABILITY OF COMPOSITE FLAT BREAD

Abstract

In Ethiopia, there are various traditional foods with potential to be developed in to nutritional foods. It is important to reduce the incidence of malnutrition, through supplementation and development of nutritious food from locally available resources such as enset plant and flaxseed crops. This study was, therefore initiated with the objective to improve the nutritional quality of kocho products by combining with flaxseed. The study was conducted with two factors, flaxseed varieties and blending ratio (95:05, 90:10, and 85:15) of kocho to flaxseed flour with control 100% kocho flour using completely randomized design and treatment means were tested at significance level of p < 0.05 with three replications. Assessment was made on the proximate composition, mineral content, anti-nutritional factors, and sensory acceptability of food in the form of bread. Flaxseed flour had showed better performance in WAC and Solubility and inferior in OAC and Swelling power as compared to kocho flour. Flaxseed flour had influence on moisture, ash, crude protein, crude fiber, crude fat and energy content of breads. With 15% flaxseed substitution, percentage moisture, ash, crude protein, crude fat, and crude fiber and energy (kcal) were to 5.12, 2.14, 4.30, 6.78, 4.01 and 388.82, respectively. Carbohydrates were high for control. Kocho bread blending with flaxseed flour at 5%, 10%, and 15% showed a significant (P < 0.05) effect on minerals. With 15% flaxseed substitution Ca, P, Zn, and Fe contents (mg/100g) to 123.30, 136.85, 1.89 and 2.99, respectively. The tannin and phytic acid contents were decreased in the breads as the proportion of flaxseed flour increased. Sensory acceptability of the product increased with increasing level of flaxseed flour supplementation. However, it also showed that the flaxseed flour can adversely affect the acceptability of the color and sourness of the bread.