Optimization of Spray-Drying Process of Jerusalem artichoke Extract for Inulin Production

Abstract

Jerusalem artichoke is an important natural matrix for inulin production. In this experiment, response surface methodology (RSM) was employed to optimize the spray-drying parameters in order to determine the maximal inulin yield. For this study, three independent variables (heating temperature (Tª, 110–120 °C), creep speed (V, 18–22 rpm) and pressure (P, 0.02–0.04 MPa)) were used in the experimental design. Using the Box–Behnken design, the optimal parameters obtained were: drying temperature 114.6 °C, creep speed 20.02 rpm, and pressure: 0.03 MPa. The inulin yield, water content and particle size of inulin obtained by spray-drying and freeze-drying were compared. In this regard, the spray-dried inulin consisted of a white powder having a fine particle size, and the freeze-dried inulin had a pale-yellow fluffy floc. On the other hand, the drying methods had a great influence on the appearance and internal structure of inulin powder, since the spray-dried inulin had a complete and uniform shape and size, whereas the freeze-dried inulin had a flocculated sheet structure. The analysis showed that the spray-drying led to a higher inulin yield, lower water content and better surface structure than freeze-drying.

Optimization of the drying process of standardized extracts from leaves of Spondias mombin L. using Box–Behnken design and response surface methodology

“…In this context, the sample feedin, and inlet temperature were the main factors that provided interaction and important modification of the experimental responses of the study of the drying process of S. mombin extracts, including product yield, residual moisture, and TPC (Table 5). Such as in this work, in other studies to optimize spray drying from complex matrices (with chemical complexity), parameters as inlet temperature and feed rate are widely explored (Rahmati et al, 2020;Souza et al, 2020;Zhu et al, 2019). The optimization of these parameters brings satisfactory results when considering the characteristics intended for the dry product, although the influence of these parameters may differ according to the properties studied.…”

“…Responses spray drying technique, a Box-Behnken factorial design can be effectively applied (Bezerra et al, 2021;Zhu et al, 2019). This statistical approach was applied to analyze the relationship between independent variables such as inlet temperature (IT-110°C, 140°C, and 170°C), feed extract flow rate (EF-0.4, 0.6, and 0.8 L/hr), and spray nozzle airflow rate (SA-30, 40, and 50 L/min); under the dependent variables were the following: angle of repose (θ), bulk and tapped density (Hausner ratio and Carr's Compressional Index), TPC (UV-Vis), and content of markers (HPLC).…”

Anti-migraine activity of freeze-dried latex obtained from Calotropis gigantea Linn

“…However, some of the basic characteristics are essential such as it should colorless and provides good protection against oxidation. Current study is designed for the long-term preservation of latex at different conditions to encapsulate latex as a core material and to further retain and protect more sensitive bioactive compounds present in it (Zhu et al 2019;Gomes et al, 2018). Herbal treatment for headache disorders is considered as an ancient treatment which is now increasing worldwide (Levin 2012).…”