Application of cold atmospheric pressure plasmas for high-throughput production of safe-to-consume beetroot juice with improved nutritional quality

• Published in: Food chemistry 2021-01, Vol.336, p.127635-127635, Article 127635
• Main Authors: Dzimitrowicz, Anna, Jamroz, Piotr, Cyganowski, Piotr, Bielawska-Pohl, Aleksandra, Klimczak, Aleksandra, Pohl, Pawel
• Format: Article
• Language: English
• Subjects: Atmospheric pressure glow discharges; Beverages; Cytotoxicity; Metals
• ISSN: 0308-8146; 1873-7072
• DOI: 10.1016/j.foodchem.2020.127635

•Fractionation patterns of elements in beetroot juice change after plasma treatment.•Antioxidant properties of beetroot juice after the plasma impact shown.•Plasma-treated beetroot juice inhibits proliferation of cancer cell lines.•Plasma-treated beetroot juice exhibits no cytotoxicity toward normal cell lines. A one-step, highly-efficiency, and low-cost cold atmospheric pressure plasma (CAPP)-based method for obtaining safe-to-consume beetroot juice (BRJ) with enhanced nutritional quality is presented. Three reaction-discharge systems with different CAPPs were studied to check how the composition and physicochemical properties changed during CAPP treatment of BRJ. To identify reactive species occur in gas phase of applied CAPP for BRJ treatment, optical emission spectrometry was used. Finally, the cytotoxicity of so-obtained BRJ to human epithelial colorectal adenocarcinoma (Caco-2) and human non-malignant intestine microvascular endothelial cells (HIMEC) was assessed. Based on the performed analyses it was found that controlled CAPP treatment of BRJ changes the fraction pattern of elements in addition to increase the content of phenolic compound presents in BRJ. Furthermore, the defined CAPP treatment of BRJ inhibits proliferation of Caco-2 cell lines, exhibiting non-cytotoxic effect for HIMEC non-malignant endothelial cells. As a result, safe-to-consume BRJ of improved nutritional quality was produced.