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Your search keyword '"Costa, Emmanoel V."' showing total 11 results
Start Over Author "Costa, Emmanoel V." Publisher wiley
11 results on '"Costa, Emmanoel V."'

1. Detailed chemical characterization and biological propensities of Malabaila lasiocarpa extracts: An endemic plant to Turkey

Author

Zengin, Gokhan, primary, Zheleva-Dimitrova, Dimitrina, additional, Babacan, Ebru Yüce, additional, Polat, Rıdvan, additional, Çakılcıoğlu, Uğur, additional, Sadeer, Nabeelah Bibi, additional, Costa, Emmanoel V., additional, Mahomoodally, Mohamad Fawzi, additional, Naviglio, Daniele, additional, Gallo, Monica, additional, Montesano, Domenico, additional, Lorenzo, José M., additional, and Gevrenova, Reneta, additional

Published
2022
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2. Essential Oil from Bark of Aniba parviflora ( Meisn .) Mez (Lauraceae) Reduces HepG2 Cell Proliferation and Inhibits Tumor Development in a Xenograft Model

Author

Oliveira, Felipe P., primary, C. Rodrigues, Ana Carolina B., additional, Lima, Emilly J. S. P., additional, Silva, Valdenizia R., additional, S. Santos, Luciano, additional, Anunciação, Talita A., additional, Nogueira, Mateus L., additional, Soares, Milena B. P., additional, Dias, Rosane B., additional, Gurgel Rocha, Clarissa A., additional, Duvoisin Junior, Sérgio, additional, Albuquerque, Patrícia M., additional, Lima, Emerson S., additional, Gonçalves, José F. C., additional, Bataglion, Giovana A., additional, Costa, Emmanoel V., additional, Silva, Felipe M. A., additional, Koolen, Hector H. F., additional, and Bezerra, Daniel P., additional

Published
2021
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4. Statistical mixture design investigation for extraction and quantitation of aporphine alkaloids from the leaves of Unonopsis duckei R.E. Fr. by HPLC-MS/MS

Author

Rocha, Pablo R. N., primary, de Freitas, Flávio A., additional, Angolini, Célio F. F., additional, Vasconcelos, Lucas-Smith F., additional, da Silva, Alaíde L. B., additional, Costa, Emmanoel V., additional, da Silva, Felipe M. A., additional, Eberlin, Marcos N., additional, Bataglion, Giovana A., additional, Soares, Patrícia K., additional, and Koolen, Hector H. F., additional

Published
2018
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5. Antitumour Activity of the Microencapsulation ofAnnona vepretorumEssential Oil

Author

Bomfim, Larissa M., primary, Menezes, Leociley R. A., additional, Rodrigues, Ana Carolina B. C., additional, Dias, Rosane B., additional, Gurgel Rocha, Clarissa A., additional, Soares, Milena B. P., additional, Neto, Albertino F. S., additional, Nascimento, Magaly P., additional, Campos, Adriana F., additional, Silva, Lidércia C. R. C. e., additional, Costa, Emmanoel V., additional, and Bezerra, Daniel P., additional

Published
2015
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11. Phytochemical study of the alkaloidal fractions of Unonopsis duckei R. E. Fr. guided by electrospray ionisation ion-trap tandem mass spectrometry.

Author

da Silva FM, de Souza AD, Koolen HH, Barison A, Vendramin ME, Costa EV, Ferreira AG, and Pinheiro ML

Subjects
Alkaloids chemistry, Aporphines analysis, Dioxoles analysis, Plant Bark chemistry, Plant Leaves chemistry, Alkaloids analysis, Annonaceae chemistry, Spectrometry, Mass, Electrospray Ionization methods, Tandem Mass Spectrometry methods
Abstract

Introduction: The Unonopsis genus is a promising source of aporphinoid alkaloids, substances with great biological potential. These alkaloids have a well-defined mass spectrometry fragmentation pattern that, together with previous phytochemical knowledge, can guide the isolation of alkaloids not yet described for the genus., Objective: Isolate substances not yet described in the Unonopsis genus, guided by alkaloidal profile analyses of stem barks, twigs and leaves of Unonopsis duckei using electrospray ionisation ion-trap tandem mass spectrometry (ESI-IT/MS(n) )., Methods: Methanolic extracts from stem barks, twigs and leaves were submitted to a liquid-liquid, acid-base partitioning treatment to obtain the alkaloidal fractions. These fractions were analysed by direct infusion into an ESI-IT/MS(n) system. The major alkaloids observed for each fraction were submitted to fragmentation analysis., Results: The MS fragmentation patterns revealed the presence of alkaloids previously reported for Annonaceae, including nornuciferine, anonaine, asimilobine, liriodenine and lysicamine, known for the Unonopsis genus, as well as others that were not yet described for this genus. In this way, the proaporphine alkaloid glaziovine was isolated, as well as a mixture of the aporphine alkaloids glaucine and norglaucine, all described for the first time in the Unonopsis genus., Conclusion: Mass spectrometry monitoring was fundamental to prioritise the isolation of substances not yet identified for the Unonopsis genus, dismissing known compounds and simplifying the phytochemical study., (Copyright © 2013 John Wiley & Sons, Ltd.)

Published
2014
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