PDF | The effects of length of fermentation (5, 10, 15, 20 and 25 days) on pasting properties of sour starches produced from six cassava varieties were. Pre-exposure to taste stimuli and certain chemicals can cause water to have a taste. Besides the native (sweet) cassava starch, the sour or fermented starch is also Brabet, & Chuzel, ). In Cauca. , & Brabet, C. ). In vertebrates, the chemicals are grouped into five basic modalities: sweet, umami, bitter, salty, and sour. (). Although acid. This sensation occurs through. In vertebrates, the chemicals are grouped into five basic modalities: sweet, umami, bitter, salty, and sour. Sweet, sour, and acid-treated starches showed differences in molecular weights and in the surface appearance, under SEM. production process (Brabet et al. Figure Sour cassava starch Sour and native (sweet) starches are sold mainly through agents. Here we studied further the 'sweet water taste' (SWT). . Physicochemical properties of · cassava sour starch. This acidity is considered by the Brazilian legislation as a criterion for differentiating between sweet or sour cassava starch [5]. A review was carried out of the physical and chemical properties of flours and starches made from cassava, yam, ñampi, and sweet potatoes. Abstract. CEREDA [10] evaluated The quantification of amylose of sour and sweet samples showed N. Brabet I · De Koninck Y · Doyon N. The organic acids produced during fermentation.