| Title: | Baru (Dipteryx alata Vogel) Oil Extraction by Supercritical-CO(2): Improved Composition by Using Water as Cosolvent |
| Author(s): | Peixoto VOD; Silva LO; Castelo-Branco VN; Torres AG; |
| Address: | "Laboratorio de Bioquimica Nutricional e de Alimentos (LBNA) e Laboratorio de Lipidomica e Bioquimica de Lipideos (LipBio), Instituto de Quimica, Universidade Federal do Rio de Janeiro. Laboratorio de Biotecnologia de Alimentos, Faculdade de Farmacia, Universidade Federal Fluminense" |
| ISSN/ISBN: | 1347-3352 (Electronic) 1345-8957 (Linking) |
| Abstract: | "Baru (Dipteryx alata) almond is an emerging nut from the Brazilian savannah, that presents unique flavor and an interesting specialty oil. In this study, we aimed at investigating the effects of pressure, temperature, type (alcohol and/or water), and concentration of polar cosolvent on the extraction yield and tocopherol contents of baru oil obtained by supercritical-CO(2) extraction (SC-CO(2)); and to investigate the effect of temperature and pressure on phytosterol, phenolic, and volatile compounds' profile in the oil when H(2)O was the cosolvent. Baru oil extracted with SC-CO(2) using alcohol as a cosolvent showed a higher extraction yield (20.5-31.1%) than when using H(2)O (4.16-22.7%). However, when 0.3% H(2)O was used as cosolvent, baru oils presented the highest gamma-tocopherol (107 and 43.7 mg/100 g) and total tocopherol (212 and 48.7 mg/100 g) contents, depending on the temperature and pressure used (50 degrees C and 10 MPa or 70 degrees C and 30 MPa, respectively). Consequently, the lowest pressure (10 MPa) and temperature (50 degrees C) values resulted in baru oils with better gamma/alpha-ratio, and the highest contents of beta-sitosterol (107 mg/100 g) and phenolic compounds (166 mg/100 g). However, the highest pressure (30 MPa) and temperature (70 degrees C) values improved the volatile profile of oils. Therefore, although alcohol as a cosolvent improved oil yield, small amounts of H(2)O provided a value-added baru oil with either high content of bioactive compounds or with a distinctive volatile profile by tuning temperature and pressure used during SC-CO(2) extraction" |
| Keywords: | Alcohols/chemistry Carbon Dioxide/*chemistry Dipteryx/*chemistry Hydroxybenzoates/analysis Liquid-Liquid Extraction/*methods Phytosterols/analysis Plant Oils/*chemistry/*isolation & purification Pressure Solvents/*chemistry Temperature Tocopherols/*analys; |
| Notes: | "MedlinePeixoto, Vanessa Oliveira Di-Sarli Silva, Lais de Oliveira Castelo-Branco, Vanessa Naciuk Torres, Alexandre Guedes eng Japan 2022/01/18 J Oleo Sci. 2022 Feb 3; 71(2):201-213. doi: 10.5650/jos.ess21115. Epub 2022 Jan 14" |
