Edgar Navarrete Pastene

Dr. Edgar Navarrete Pastene

Universidad del Bío-Bío
orcid

Research Focus & Metrics

Academic Career Length

18Years (2009-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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13 February 2020 in Plants
Verified
Journal Article
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JTJeniffer Torres
Jeniffer Torres
SGSergio Gómez-Alonso
Sergio Gómez-Alonso
JPJosé Pérez-Navarro
José Pérez-Navarro
EPEdgar Navarrete Pastene
Edgar Navarrete Pastene
Peumus boldus Mol., is a Chilean medicinal tree used for gastrointestinal and liver diseases. Such medicinal properties are associated with the presence of bioactive flavonoids and aporphine alkaloids. In this study, a new green and efficient extraction method used seven natural deep eutectic solvents (NADES) as extraction media. The extraction efficiency of these NADES was assessed, determining the contents of boldine and total phenolic compounds (TPC). Chemical profiling of P. boldus was done by high-performance liquid chromatography coupled to photo diode array detector and electrospray ion-trap mass spectrometry (HPLC-PDA-ESI-IT/MS) and electrospray ionization quadrupole time-of-flight high-resolution mass spectrometry (HPLC-ESI-QTOF-MS). Among the NADES tested, NADES4 (choline chloride-lactic acid) and NADES6 (proline-oxalic acid) enable better extraction of boldine with 0.427 ± 0.018 and 2.362 ± 0.055 mg of boldine g−1 of plant, respectively. Extraction of boldine with NADES4 and NADES6 was more efficient than extractions performed with methanol and water. On the other hand, the highest TPC were obtained using NADES6, 179.442 ± 3.79 mg of gallic acid equivalents (GAE g−1). Moreover, TPC in extracts obtained with methanol does not show significant differences with NADES6. The HPLC-PAD-MS/MS analysis enable the tentative identification of 9 alkaloids and 22 phenolic compounds. The results of this study demonstrate that NADES are a promising green extraction media to extract P. boldus bioactive compounds and could be a valuable alternative to classic organic solvents.

20 May 2010 in Journal of Agricultural and Food Chemistry
Verified
Journal Article
Closed access
EPEdgar Navarrete Pastene
Edgar Navarrete Pastene
HSHernán Speisky
Hernán Speisky
AGApolinaria García
Apolinaria García
JMJessica Moreno
Jessica Moreno
MTMiriam Troncoso
Miriam Troncoso
GFGuillermo Figueroa
Guillermo Figueroa

23 May 2014 in Phytotherapy Research
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Journal Article
Closed access
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EPEdgar Navarrete Pastene
Edgar Navarrete Pastene
VPVíctor Parada
Víctor Parada
MAMarcia Avello
Marcia Avello
ARAntonieta Ruiz
Antonieta Ruiz
AGApolinaria García
Apolinaria García

19 August 2009 in Journal of Agricultural and Food Chemistry
Verified
Journal Article
Closed access
EPEdgar Navarrete Pastene
Edgar Navarrete Pastene
HSHernán Speisky
Hernán Speisky
MTMiriam Troncoso
Miriam Troncoso
JAJulio Alarcón
Julio Alarcón
GFGuillermo Figueroa
Guillermo Figueroa

1 June 2020 in Food Chemistry
Verified
Journal Article
Closed access
JFJocelyn Fuentes
Jocelyn Fuentes
MSMaría Fernanda Arias Santé
María Fernanda Arias Santé
EAElías Atala
Elías Atala
EPEdgar Navarrete Pastene
Edgar Navarrete Pastene
MKMarcelo Kogan
Marcelo Kogan
HSHERNAN Cosoy SPEISKY
HERNAN Cosoy SPEISKY

1 May 2019 in Revista Brasileira de Farmacognosia
Verified
Journal Article
Open access
MRMario Romero Rivera
Mario Romero Rivera
JFJosé Freire
José Freire
EPEdgar Navarrete Pastene
Edgar Navarrete Pastene
ACApolinaria Garcia Cancino
Apolinaria Garcia Cancino
MAMario Aranda
Mario Aranda
CGCarlos González
Carlos González