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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

ETHANOLIC AND HYDROALCOHOLIC EXTRACTS OF PITANGA LEAVES (Eugenia uniflora L.) AND THEIR FRACTIONATION BY SUPERCRITICAL TECHNOLOGY

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Author(s):
Garmus, Tabata T. [1] ; Kopf, Sarah F. M. [1] ; Paula, Julia T. [2] ; Aguiar, Ana C. [3] ; Duarte, Gustavo H. B. [3] ; Eberlin, Marcos N. [3] ; Cabral, Fernando A. [1]
Total Authors: 7
Affiliation:
[1] Univ Estadual Campinas, Dept Engn Alimentos, Campinas, SP - Brazil
[2] Univ Fed Mato Grosso, Inst Ciencias Exatas & Terra, Dept Engn Alimentos, Barra Do Garcas, MT - Brazil
[3] Univ Estadual Campinas, Inst Quim, Lab Espectrometria Massa ThoMSon, Campinas, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Brazilian Journal of Chemical Engineering; v. 36, n. 2, p. 1041-1051, APR-JUN 2019.
Web of Science Citations: 0
Abstract

Hydroalcoholic extracts prepared by conventional methods (in stirred vessel at 25 degrees C and 1 bar) and, hydroalcoholic and supercritical carbon dioxide (scCO(2)) extracts prepared in fixed bed extractors (60 degrees C and 400 bar) were obtained from pitanga leaves (Eugenia uniflora L.) in order to recover phenolic compounds. Hydroalcoholic and ethanolic extracts obtained in fixed bed were further fractionated in four separators by gradual pressure reduction, using scCO(2) as an antisolvent. All extracts and fractions were characterized in terms of extraction yield and the presence of total phenolics and flavonoids. Solvents were found to significantly influence the extraction yields and composition. Yields increased as a function of polarity, whereas the hydroalcoholic extractions displayed the highest yields and the highest amounts of extracted phenols and flavonoids. (AU)

FAPESP's process: 14/16662-5 - Obtention and fractionation of extracts from pitanga (Eugenia uniflora L.) leaves using supercritical technology
Grantee:Sarah Franziska Maria Kopf
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 12/51317-1 - Development of products and processes with supercritical technology: construction of one multipurpose unit to obtain extracts of industrial interest.
Grantee:Fernando Antonio Cabral
Support type: Regular Research Grants