Pre-drying of 2-Phase Olive Pomace by Drum Dryer to Improve Processability

Abstract

In this study, the minimum quality loss of 2-phase olive pomace and the maximum system's energy efficiency is targeted during pre-drying of olive pomace in a drum dryer. Vapor pressure and valse rotational speed were selected as the independent variables of drum dryer. For each vapor pressure value (1, 2, 3, 3.5 and 4 bar), drying of 2-phase olive pomace was performed at different valse rotational speeds (0.5, 1, 2, 3, 4.5 and 6 rpm). Drum dryer conditions were optimized with desirability function approach by targeting the moisture content range as 30-50%, minimum peroxide value and maximum specific moisture extraction rate (SMER). The optimum drum dryer conditions were determined as 3.27 bar for vapor pressure and 6 rpm for valse rotational speed. Moreover, the effects of vapor pressure and valse rotational speed on the physical and chemical properties of pre-dried 2-phase olive pomace and the system's energy efficiency were examined.

Ready-to-Eat Chickpea Purée Powder by Drum Drying; Physicochemical and Rheological Properties of Powder Product

“…The drying process of the chickpea puree was carried out in a twin drum dryer with different saturated steam pressures (2, 3 and 4 bar) and drum rotation speeds (2, 3, 4 and 5 rpm) at a constant gap (1mm) between two drums (Baysan et al, 2021). Drying experiments were replicated two times.…”