Effect of Soaking and Cooking on Nutritional and Quality Properties of Faba Bean

Abstract

Faba bean seeds (Giza 843) were soaked in tap water and different saline solutions (0.5, 1% baking powder and 0.5, 1% sodium bicarbonate) to accelerate the cooking process and improve their nutritional and quality properties. Soaking and cooking parameters of raw and treated cooked beans were investigated. The samples were evaluated for their nutritional, physical and sensory characteristics and in-vitro protein digestibility (IVPD). The data showed that, water absorption values increased as the soaking time increased (14.39-21.99 after 1hr and 76.96-88.17% after 12 hrs). Cooking time decreased as a result of soaking process. It was higher (260min) for raw bean and lower (40 min) for 1% baking powder. The IVPD improved after soaking and cooking. It was 70.35 for raw bean, 83.47 for control and 87.29% for 1% sodium bicarbonate. Total carbohydrates and phenolic compounds decreased for all cooked samples as compared to the raw one. As a conclusion, soaking for 12hrs with 1% baking powder, discarding soaking solution and using fresh water for cooking is the best treatment to reduce cooking time and improve the nutritional and quality properties of cooked faba beans.