Hydrothermal pretreatment based on semi-continuous flow-through sequential reactors for the recovery of bioproducts from jabuticaba (Myrciaria cauliflora) peel

• Published in: The Journal of supercritical fluids 2022-12, Vol.191, p.105766, Article 105766
• Main Authors: Barroso, Tiago Linhares Cruz Tabosa, da Rosa, Rafael Gabriel, Sganzerla, William Gustavo, Castro, Luiz Eduardo Nochi, Maciel-Silva, Francisco Weshley, Rostagno, Mauricio Ariel, Forster-Carneiro, Tânia
• Format: Article
• Language: English
• Subjects: Bioactive compounds; Cyanidine-3-glycoside; Extraction; Fermentable sugars; Furfural; Hydrolysis; Lignocellulosic biomass; Subcritical water
• ISSN: 0896-8446; 1872-8162
• DOI: 10.1016/j.supflu.2022.105766

This study evaluated a novel pretreatment process composed of two sequential flow-through hydrothermal reactors operated in a semi-continuous mode to recover value-added bioproducts from jabuticaba (Myrciaria cauliflora) peel. The system was operated at 15 MPa, 5 mL min−1, feed of 10 g jabuticaba peel per reactor, 45 min of process duration, and temperature ranging from 60° to 210°C using the design of experiment (DOE) followed by response surface methodology (RSM). The results showed that the two sequential reactors at 135 °C following by 60 °C increased the monosaccharides (160.74 mg g−1), the extraction of cyanidin-3-glucoside (0.78 mg g−1) and the total phenolic compounds yields (0.58 mg g−1). The formation of inhibitors was more present in the two sequential reactors at 210 °C. The hydrothermal pretreatment designed demonstrated to be an eco-friendly technology for the recovery of value-added products from jabuticaba peel. [Display omitted] •A novel hydrothermal pretreatment was designed to obtain compounds from jabuticaba peel.•The maximum yield of sugars (160.74 mg g−1) was obtained at HTP-R1 at 135 °C and HTP-R2 at 60 °C.•Both reactors at 60 °C maximized the recovery of cyanidin-3-glucoside (1.88 mg g−1).•The configuration with both reactors at 210 °C provided the highest organic acid yield (44.78 mg g−1).•The mass reduction of jabuticaba peel in the hydrolytic process reached 85.4 %.