New method for determination of (E)resveratrol in wine based on microextraction using packed sorbent and ultra-performance liquid chromatography


Autoria(s): Gonçalves, João; Câmara, José de Sousa
Data(s)

09/12/2015

09/12/2015

01/06/2011

Resumo

An ultra-fast and improved analytical methodology based on microextraction by packed sorbent (MEPS) combined with ultra-performance LC (UPLC) was developed and validated for determination of (E)-resveratrol in wines. Important factors affecting the performance of MEPS such as the type of sorbent material (C2, C8, C18, SIL, and M1), number of extraction cycles, and sample volume were studied. The optimal conditions of MEPS extraction were obtained using C8 sorbent and small sample volumes (50–250mL) in one extraction cycle (extract–discard) and in a short time period (about 3 min for the entire sample preparation step). (E)-Resveratrol was eluted by 1 250mL of the mixture containing 95% methanol and 5% water, and the separation was carried out on a highstrength silica HSS T3 analytical column (100 mm 2.1 mm, 1.8mm particle size) using a binary mobile phase composed of aqueous 0.1% formic acid (eluent A) and methanol (eluent B) in the gradient elution mode (10 min of total analysis). The method was fully validated in terms of linearity, detection (LOD) and quantification (LOQ) limits, extraction yield, accuracy, and inter/intra-day precision, using a Madeira wine sample (ET) spiked with (E)-resveratrol at concentration levels ranging from 5 to 60mg/mL. Validation experiments revealed very good recovery rate of 9575.8% RSD, good linearity with r2 values 40.999 within the established concentration range, excellent repeatability (0.52%), and reproducibility (1.67%) values (expressed as RSD), thus demonstrating the robustness and accuracy of the MEPSC8/UPLC-photodiode array (PDA) method. The LOD of the method was 0.21mg/mL, whereas the LOQ was 0.68mg/mL. The validated methodology was applied to 30 commercial wines (24 red wines and six white wines) from different grape varieties, vintages, and regions. On the basis of the analytical validation, the MEPSC8/UPLC-PDA methodology shows to be an improved, sensitive, and ultra-fast approach for determination of (E)-resveratrol in wines with high resolving power within 6 min.

Identificador

Gonçalves, J., & Câmara, J. S. (2011). New method for determination of (E)‐resveratrol in wine based on microextraction using packed sorbent and ultra‐performance liquid chromatography. Journal of separation science, 34(18), 2376-2384.

http://hdl.handle.net/10400.13/939

10.1002/jssc.201100336

Idioma(s)

eng

Publicador

Wiley-VCH

Relação

FEDER (Transnational Cooperation MAC 2007-2013 Program) through VinSaudeMAC project (MAC/1/M105) for the financial support, and Portuguese Foundation for Science and Technology (FCT) through the MS Portuguese Networks (REDE/1508/RNEM/ 2005) and Pluriannual base funding (QUI-Madeira-674).

Direitos

openAccess

Palavras-Chave #(E)-Resveratrol #Microextraction by packed sorbent #Ultraperformance LC #Wine #. #Faculdade de Ciências Exatas e da Engenharia
Tipo

article