Oleosomes from Buriti (Mauritiaflexuosa L. f.): Extraction, characterization and stability study

Author(s)

Pereira, Willias Fabio Silva ; Furtado, Guilherme de Figueiredo ; Feltre, Gabriela ; Hubinger, Miriam Dupas

• Document type: Journal article
• Source: INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES; v. 82, p. 14-pg., 2022-10-18.

Abstract

This study proposes a new strategy for extracting lipids from Buriti fruit in the form of oleosomes (OB) using an alkaline extraction medium and also evaluates the stability of OB under different pH conditions. The extracted oleosomes were evaluated under three pH conditions (2, 4.5 and 7) and showed sizes between 14.33 +/- 0.03 and 16.44 +/- 0.08 mu m. Their zeta potential values varied with increasing pH (from 2 to 9), with an isoelectric point between pH 2.0 and 3.0. Proteins associated with oleosomes were observed between 14 and 29 kDa. The stability of the oleosome emulsions was confirmed by measuring the droplet size (D3,2) which showed constant values during 28 days of storage. The Turbiscan stability index (TSI) also corroborates the stability of these emulsions in the same storage period. Furthermore, the carotenoid content in the oleosome emulsions was more stable than the carotenoids in bulk Buriti oil during 28 days of storage. (AU)

• FAPESP's process: 21/06863-7 - Use of protein and polysacharides to obtain structured oils:fat replacement and curcumin delivery
• Grantee: Miriam Dupas Hubinger
• Support Opportunities: Regular Research Grants
• FAPESP's process: 17/08130-1 - MODEL INFANT FORMULAS: INFLUENCE OF PROTEIN TYPE AND OIL TYPE ON EMULSION AND PARTICLE PROPERTIES AND THEIR IMPACT ON LIPOLYSIS, PROTEOLYSIS AND DISINTEGRATION DURING IN VITRO DIGESTION.
• Grantee: Guilherme de Figueiredo Furtado
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 19/27354-3 - Architecture of colloidal delivery systems: what is the role of structure on the digestibility?
• Grantee: Rosiane Lopes da Cunha
• Support Opportunities: Research Projects - Thematic Grants