Vanda Pereira, PhD - University of Aveiro

Vanda Pereira

PhD

University of Aveiro

Portugal

ORCID logohttps://orcid.org/0000-0003-0772-8953

Vanda Pereira, PhD - University of Aveiro

Vanda Pereira

PhD

Introduction

Primary Affiliation: University of Aveiro - Portugal

Education

Mar 2006 - Jul 2011
Universidade da Madeira
Doutoramento em Química Analítica
Centro de Ciências Exatas e da Engenharia
Nov 1999 - Dec 2005
Universidade da Madeira
Licenciatura em Química
Centro de Ciências Exatas e da Engenharia

Experience

Feb 2010 - Jan 2011
Universidade da Madeira
Estagiária
Centro de Ciências Exatas e da Engenharia
Sep 2015
Universidade da Madeira
Investigadora Pós-doutoramento
Faculdade de Ciências Exatas e da Engenharia

Publications

7Publications

54Reads

4Profile Views

12PubMed Central Citations

Evaluation of fucoxanthin contents in seaweed biomass by vortex-assisted solid-liquid microextraction using high-performance liquid chromatography with photodiode array detection

Algal Research

    Abstract

    Fucoxanthin is considered an important marine bioactive compound with biological properties with promising effects, namely on health. A simple and efficient analytical methodology is proposed for its quantification in seaweed biomass by using vortex-assisted solid-liquid microextraction (VASLME) followed by reversed phase high-performance liquid chromatography (RP-HPLC) photodiode array detection (PDA) analysis. This microextraction uses reduced quantities of sample (25 mg) and solvent (300 μL of ethanol) to efficiently extract this high-valued xanthophyll, in a vortex time of 15 min. These extraction parameters were optimized performing a Central Composite Design (CCD) analysis, running 32 individual experiments. In turn, the method validation was assessed. The linearity of the method was confirmed (R2 = 0.99998) in a concentration range from 12 to 3600 μg·g−1 dw. Also, good sensitivity and accuracy results were observed through the LOD (3.33 μg·g−1), LOQ (10.09 μg·g−1) and recovery (varied from 95 to 97%) assessments. Good precision was also verified, with intra-day variation within 2.0–3.3%, and inter-day within 1.0–3.8%. Matrix effect was also evaluated and an acceptable variation of 3.4% was found. The method applicability was confirmed by the analysis of 22 seaweed biomass samples and fucoxanthin content was found to vary from about 10 to 853 μg·g−1 dw. This method demonstrated a good performance and can be successfully implemented for a rapid, reliable and accurate screening of fucoxanthin in seaweed biomass.

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    September 2019

    Rapid Determination of Sotolon in Fortified Wines Using a Miniaturized Liquid-Liquid Extraction Followed by LC-MS/MS Analysis.

    J Anal Methods Chem 2018 16;2018:4393040. Epub 2018 Dec 16.

    Faculty of Exact Sciences and Engineering, University of Madeira, Campus da Penteada, 9020-105 Funchal, Portugal.

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    http://dx.doi.org/10.1155/2018/4393040DOI Listing
    http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6311786PMC
    December 2018
    2 Reads

    Volatile profile of Madeira wines submitted to traditional accelerated ageing.

    Food Chem 2014 Nov 18;162:122-34. Epub 2014 Apr 18.

    Centre of Exact Sciences and Engineering, University of Madeira, Campus da Penteada, 9000-390 Funchal, Portugal; Institute of Nanostructures, Nanomodelling and Nanofabrication (I3N), University of Aveiro, Aveiro, Portugal.

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    http://dx.doi.org/10.1016/j.foodchem.2014.04.039DOI Listing
    November 2014
    8 Reads
    3 Citations
    3.391 Impact Factor

    Rapid and sensitive methodology for determination of ethyl carbamate in fortified wines using microextraction by packed sorbent and gas chromatography with mass spectrometric detection.

    Anal Chim Acta 2014 Feb 21;811:29-35. Epub 2013 Dec 21.

    Centre of Exact Sciences and Engineering, University of Madeira, Campus da Penteada, 9000-390 Funchal, Portugal; Institute of Nanostructures, Nanomodelling and Nanofabrication (I3N), University of Aveiro, Aveiro, Portugal.

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    http://dx.doi.org/10.1016/j.aca.2013.12.018DOI Listing
    February 2014
    11 Reads
    2 Citations
    4.513 Impact Factor

    Polyphenols, antioxidant potential and color of fortified wines during accelerated ageing: the Madeira Wine case study.

    Molecules 2013 Mar 5;18(3):2997-3017. Epub 2013 Mar 5.

    Centre of Exact Sciences and Engineering, University of Madeira, Campus da Penteada, 9000-390 Funchal, Portugal.

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    http://dx.doi.org/10.3390/molecules18032997DOI Listing
    http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6269662PMC
    March 2013
    6 Reads
    2 Citations
    2.420 Impact Factor

    HPLC-DAD methodology for the quantification of organic acids, furans and polyphenols by direct injection of wine samples.

    J Sep Sci 2010 May;33(9):1204-15

    Centro de Química da Madeira, Departamento de Química da Universidade da Madeira, Campus Universitário da Penteada, Funchal, Portugal.

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    http://dx.doi.org/10.1002/jssc.200900784DOI Listing
    May 2010
    22 Reads
    1 Citation
    2.740 Impact Factor

    Quantification of polyphenols with potential antioxidant properties in wines using reverse phase HPLC.

    J Sep Sci 2008 Jul;31(12):2189-98

    Universidade da Madeira, Departamento de Química, Centro de Química da Madeira, Campus Universitário da Penteada, Funchal, Portugal.

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    http://dx.doi.org/10.1002/jssc.200800021DOI Listing
    July 2008
    5 Reads
    4 Citations
    2.740 Impact Factor