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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.)

Green coffee extracts rich in diterpenes - Process optimization of pressurized liquid extraction using ethanol as solvent

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Author(s):
de Oliveira, Naila Albertina [1] ; Cornelio-Santiago, Heber P. [1] ; Fukumasu, Heidge [2] ; de Oliveira, Alessandra Lopes [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Dept Food Engn, Fac Anim Sci & Food Engn, LTAPPN, Sao Paulo - Brazil
[2] Univ Sao Paulo, Dept Vet Med, Fac Anim Sci & Food Engn, Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Food Engineering; v. 224, p. 148-155, MAY 2018.
Web of Science Citations: 6
Abstract

In this study, a pressurized liquid extraction (PLE) was optimized to obtain green coffee extract rich in cafestol and kahweol diterpenes. The effects of temperature (T) and static time (St) (time of contact between the solvent and the matrix during each cycle or batch) on global yield, cafestol and kahweol concentrations and antioxidant activity were studied. The greatest green coffee extract global yield (9.78%) was obtained at 70 degrees C and 8 min St. PLE at 74 degrees C and 6 min St presented the highest concentration of cafestol (20.08 g/kg extract) in the green coffee extract, whereas, the highest kahweol concentration (25.16 g/kg extract) was obtained at 60 degrees C and 6 min St. The extracts showed high DPPH center dot antioxidant activity, particularly after PLE at 50 degrees C and 8 min St (EC50 1.56 mu g/mL of extract). This extract also presented a high total phenolic content (35.99 mg GAE/g of extract). (C) 2018 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 13/03371-0 - CONCENTRATION OF BIOACTIVE COMPOUNDS ANALYSIS AND EVALUATION OF ACUTE TOXICITY IN VIVO OF THE DITERPENES CAFESTOL AND KAHWEOL FROM GREEN BEANS COFFEE OIL OBTAINED BY SUPERCRITICAL AND PRESSURIZED FLUID EXTRACTIONS.
Grantee:Naila Albertina de Oliveira
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 10/16665-3 - Green coffee oil extraction by supercritical and pressurized fluid process, and comparison with the composition of coffee oil obtained by pressing for the small producers of the State of São Paulo - concentration analysis of bioactive diterpenes
Grantee:Alessandra Lopes de Oliveira
Support Opportunities: Regular Research Grants