Effects of carrier agents on powder properties, stability of carotenoids, and encapsulation efficiency of goldenberry (Physalis peruviana L.) powder produced by co-current spray drying

Lara Etzbach; Messina Meinert; Thilo Faber; Carolin Klein; Andreas Schieber; Fabian Weber

doi:10.1016/j.crfs.2020.03.002

Effects of carrier agents on powder properties, stability of carotenoids, and encapsulation efficiency of goldenberry (Physalis peruviana L.) powder produced by co-current spray drying

Curr Res Food Sci. 2020 Mar 16:3:73-81. doi: 10.1016/j.crfs.2020.03.002. eCollection 2020 Nov.

Authors

Lara Etzbach¹, Messina Meinert¹, Thilo Faber², Carolin Klein³, Andreas Schieber¹, Fabian Weber¹

Affiliations

¹ Institute of Nutritional and Food Sciences, Molecular Food Technology, University of Bonn, Endenicher Allee 19b, D-53115, Bonn, Germany.
² Institute of Pharmacy, Pharmaceutical Technology, University of Bonn, Gerhard-Domagk-Str. 3, D-53121, Bonn, Germany.
³ Pfeifer & Langen GmbH & Co. KG, Duerener Str. 40, D-50189, Elsdorf, Germany.

Abstract

Maltodextrin, modified starch, inulin, alginate, gum arabic, and combinations thereof were used as carrier agents for spray drying of carotenoid-rich goldenberry (Physalis peruviana L.) juice and compared to cellobiose as an alternative carrier. Powders were analyzed with respect to particle size and morphology, yield, moisture content, cold water solubility, suspension stability, hygroscopicity, carotenoid encapsulation efficiency, and carotenoid retention during storage. A high initial carotenoid concentration after spray drying, a high encapsulation efficiency of 77.2%, and a slow carotenoid degradation kinetics favored the high carotenoid content of the cellobiose powder at the end of the storage. Cellobiose might protect the carotenoids from degradation processes by light exposure, high temperature, and oxygen due to a tighter particle crust and larger particle sizes. Therefore, cellobiose may be considered a potential carrier agent for the encapsulation of carotenoid-rich fruit juices.

Keywords: BHT, butylated hydroxytoluene; Carotenoids; Cellobiose; DAD, diode array detection; DE, dextrose equivalents; ETD, everhart thornley detector; Encapsulation efficiency; FE-SEM, field emission scanning electron microscopy; Goldenberry; HPLC, high-performance liquid chromatography; Physalis peruviana L.; Spray drying; TLD, through lens detector; Tg, glass transition temperature; dw, dry weight.