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

2022; Elsevier BV; Volume: 191; Linguagem: Inglês

10.1016/j.supflu.2022.105766

1872-8162

Tiago Linhares Cruz Tabosa Barroso, Rafael Gabriel da Rosa, William Gustavo Sganzerla, Luiz Eduardo Nochi Castro, Francisco Weshley Maciel-Silva, Maurı́cio A. Rostagno, Tânia Forster‐Carneiro,

Biofuel production and bioconversion

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. • 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%