Semi-continuous flow-through hydrothermal pretreatment for the recovery of bioproducts from jabuticaba (Myrciaria cauliflora) agro-industrial by-product

Author(s)

Barroso, Tiago ; Sganzerla, William ; Rosa, Rafael ; Castro, Luiz ; Maciel-Silva, Francisco ; Rostagno, Mauricio ; Forster-Carneiro, Tania

• Document type: Journal article
• Source: Food Research International; v. 158, p. 12-pg., 2022-06-28.

Abstract

The valorization of the by-product of the agro-industrial processing of jabuticaba (Myrciaria cauliflora) was studied by hydrothermal pretreatment. Experiments were carried out in a semi-continuous flow-through process for 45 min, at 15 MPa, a water flow rate of 5 mL min(-1), and at different temperatures (60 - 210 ?). The results demonstrate that fructose and glucose were the sugars with the highest concentration in all analyzed treatments. Arabinose and cellobiose were obtained only at higher temperatures (above 130 ?), demonstrating that they were released from the hydrolysis of polysaccharides. The highest cyanidin-3-glucoside yield (1.88 mg g-1) was achieved at 60 ?. The treatments at 135 and 210 ? promoted the degradation of cyanidin-3-glucoside, leading to yields lower than 0.05 mg g(-1). At 60 ?, it was possible to recover 74.18 mg g(-1) of glucose, 103.77 mg g(-1) of fructose, 30.75 mg g(-1) of citric acid, and 1.88 mg g-1 of cyanidin-3-glucoside, without the presence of furfural and 5-hydroxymethylfurfural. The results suggest that hydrothermal pretreatment is a promising eco-friendly technology to recover sugars, organic acids, and anthocyanins from jabuticaba by-products in a circular economy framework. (AU)

• FAPESP's process: 20/16248-5 - Purification of jabuticaba waste extracts by adsorbents and biochar using supercritical technology
• Grantee: Tiago Linhares Cruz Tabosa Barroso
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 18/14582-5 - Development of a two-dimensional extraction, separation and analysis system for evaluating the bioactivity of phytochemicals
• Grantee: Maurício Ariel Rostagno
• Support Opportunities: Research Grants - Young Investigators Grants - Phase 2
• FAPESP's process: 21/04096-9 - Integration of the extraction/hydrolysis processes in subcritical water and purification for the valuation of grape bagasse in a biorrefinery concept
• Grantee: Luiz Eduardo Nochi de Castro
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 19/26925-7 - Development of an automated system for biofuel precursor production using sub-critical technology
• Grantee: William Gustavo Sganzerla
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)