Valorization of the baru (Dipteryx alata Vog.) processing chain: Technological properties of defatted nut flour and oil solubility in ethanol and isopropanol

Author(s)

Aracava, Keila K. ; Capellini, Maria C. ; Goncalves, Daniel ; Soares, Ingrid D. ; Margoto, Cristiane M. ; Rodrigues, Christianne E. C.

• Document type: Journal article
• Source: Food Chemistry; v. 383, p. 11-pg., 2022-07-30.

Abstract

Baru, a Brazilian Cerrado native fruit, stands out for its high nutritional value. Considering that reports about its technological potential are scant, this study aimed to add value to the processing chain. For that, ethanol and isopropanol were evaluated in terms of their suitability to solubilize baru nut oil (BNO), extract baru nut cake oil (BNCO), and obtain a protein-rich defatted flour. The BNO solubility in alcohols was adequately described by nonrandom two-liquid (NRTL) parameters, and the highest solubilization capacity was achieved with absolute isopropanol. Alcoholic extraction did not affect the BNCO tocopherol content (80-112 mg/kg oil) or its fatty acid composition. Both protein solubility and thermal stability were negatively affected by solvent hydration, temperature, and contact stages. However, the materials exhibited adequate water and oil absorption capacities (3.5 and 1 g/g sample), as well as improved foaming capacity and stability, confirming their potential for use in several food formulations. (AU)

• FAPESP's process: 18/12713-5 - Effects of soybean pre-treatment on the performance of the alcoholic extraction process: yield, functionalities of the protein fraction and volatile fraction characterization
• Grantee: Maria Carolina Capellini
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 14/21252-0 - Equilibrium and production processes of biofuels and bioproducts
• Grantee: Antonio José de Almeida Meirelles
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 18/13207-6 - Extraction and computational simulation of ethanolic biodiesel production from peanut oil
• Grantee: Daniel Gonçalves
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 17/20840-4 - Valorization of agroindustrial coproducts through obtaining vegetable oils and minority compounds by extraction with solvents
• Grantee: Christianne Elisabete da Costa Rodrigues
• Support Opportunities: Regular Research Grants