Obtention and fractionation of extracts from pitanga (Eugenia uniflora L.) leaves using supercritical technology

• Grant number: 14/16662-5
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): October 01, 2014
• Effective date (End): June 30, 2015
• Field of knowledge: Agronomical Sciences - Food Science and Technology - Food Engineering
• Principal Investigator: Fernando Antonio Cabral
• Grantee: Sarah Franziska Maria Kopf
• Host Institution: Faculdade de Engenharia de Alimentos (FEA). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

Expecting to extract and fractionate phenolic compounds from leaves of pitanga (Eugenia uniflora L.) four types of extraction will be performed. At first extracts are obtained by sequential extraction (two steps) in fixed bed at 60 ° C and 400 bar using supercritical carbon dioxide (scCO2) (first step) and ethanol + scCO2 (second step) as a solvent mixture. In the second type, the extracts will be obtained using ethanol in fixed bed in a single step at 60 ° C and 400 bar. For comparison, third and fourth type respectively, hydroalcoholic extracts will be obtained by conventional methods (60 ° C and Patm) and in fixed bed (60 ° C and 400 bar). The ethanolic extract (fixed bed) will be selectively fractionated into separators by gradual reduction of pressure, using scCO2 as anti-solvent. All samples will be characterized as the extraction yield and the presence of total phenols and flavonoids.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

GARMUS, TABATA T.; KOPF, SARAH F. M.; PAULA, JULIA T.; AGUIAR, ANA C.; DUARTE, GUSTAVO H. B.; EBERLIN, MARCOS N.; CABRAL, FERNANDO A.. ETHANOLIC AND HYDROALCOHOLIC EXTRACTS OF PITANGA LEAVES (Eugenia uniflora L.) AND THEIR FRACTIONATION BY SUPERCRITICAL TECHNOLOGY. Brazilian Journal of Chemical Engineering, v. 36, n. 2, p. 1041-1051, APR-JUN 2019. (12/51317-1, 14/16662-5)