Optimization of capillary zone electrophoresis separation and on-line preconcentration of 16 phenolic compounds from wines produced in South America

Ballus, Cristiano Augusto; Meinhart, Adriana Dillenburg; Oliveira, Raquel Grando de; Godoy, Helena Teixeira

doi:10.1016/j.foodres.2011.09.029

Cited by 41 publications

(29 citation statements)

References 34 publications

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“…The average content of gallic acid was higher in wines from the Sádek site (mean 0.97 mg/l), which ranged from 0.76 mg/l to 1.42 mg/l. Similar levels of gallic acid in white wines were found in Brazil (Ballus et al 2012) and in the Canary Islands (Darias-Martín et al 2008). A higher content of gallic acid was demonstrated in white wine from South Africa (De Villiers et al 2005) and Croatia (Rastija et al 2009).…”

Section: Resultssupporting

confidence: 68%

Influence of locality on content of phenolic compounds in white wines

Lampíř¹,

Pavloušek²

2013

Czech J. Food Sci.

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Lampíř L., Pavloušek P. (2013): Influence of locality on content of phenolic compounds in white wines. Czech J. Food Sci., 31: 619-626.Phenolic compounds in grapes and wines are significantly influenced by the environment. Phenolic compounds in grapes are therefore a good reflection of terroir. The authentic wines were made from seven white grape varieties and two localities in the Czech Republic. Sádek is a location on the edge of production wine-growing in the Czech Republic and Perná is a typical wine-growing location in the Czech Republic. The profile of phenolic compounds was analysed by HPLC. Based on the statistical evaluation of these results, the following phenolic compounds were found to very well reflect the terroir conditions: protocatechuic acid, p-hydroxybenzoic acid, caftaric acid, cis-piceid, (+)-catechin and (-)-epicatechin. Since these compounds were not influenced significantly by vintage, they can be good markers of terroir.

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Section: Resultssupporting

confidence: 68%

Influence of locality on content of phenolic compounds in white wines

Lampíř¹,

Pavloušek²

2013

Czech J. Food Sci.

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“…For simplicity, a Beckman CE-UV system equipped with an autosampler was used for the optimization of CE separation conditions. A borate based buffer was chosen for the separation because of its ability to form complexes with polyphenolic compounds and increase their effective negative charge and size [29, 30] . Migration in CE is based on the overall charge and hydrated radius of a molecule.…”

Section: Resultsmentioning

confidence: 99%

A capillary electrophoresis electrospray ionization-mass spectrometry method using a borate background electrolyte for the fingerprinting analysis of flavonoids in Ginkgo biloba herbal supplements

Johnson

Lunte

2016

Anal. Methods

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A laboratory-built sheath liquid capillary electrophoresis-mass spectrometry interface was used to develop a qualitative method for fingerprinting analysis of 14 structurally similar flavones, flavonols, flavonones, and several representative glycosides in plant samples. The migration order of the flavonoids was dependent on a the number of hydroxyl groups present on the flavonoid B-ring, extent of conjugation, number of glycosidic functionalities, and ability of the flavonoid to form stable borate complexes with the background electrolyte. Parent ion scans of the flavonoids yielded [M-H]−, except for catechol containing flavonoids, which were detected as borate adducts. These adducts can be used diagnostically to determine the presence or absence of catechol groups on unknown polyphenolic compounds. Product ion scans of the flavonoid glycosides and borate adducts typically yielded the deprotonated aglycone fragment as the base peak, which could be used to confirm the base structure of the flavonoid. This method’s utility was demonstrated by analyzing flavonoids present in ethanolic extracts of Ginkgo biloba herbal supplements.

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“…Various techniques have been used for the determination of trans-resveratrol in liquid samples: gas chromatography-mass spectrometry, GC-MS (19), capillary electrophoresis (20) or the most commonly utilised reversed phase high-performance liquid chromatography, RP-HPLC, either with UV detection (21,22), fl uorimetric detection (1) or with mass spectrometric detection (23); this compound can be easily determined in wines and other drinks by means of direct injection (5,14).…”

Section: Introductionmentioning

confidence: 99%

Monitoring trans-Resveratrol in Grape Berry Skins During Ripening and in Corresponding Wines by HPLC

Geană

Dinca

Ionete

et al. 2015

Food Technol. Biotechnol.

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SummaryT rans-resveratrol (3,5,4'-trihydroxy-trans-stilbene) is naturally present in the skin of grapes and therefore is expected to occur in grape products. Recently, there has been a renewal of interest in wine as medical treatment for various disorders. In this study, berry skins of fi ve red grape varieties were analysed at weekly intervals for trans-resveratrol production, during 2012 and 2013 harvest. The obtained wines were also evaluated. Quantification of trans-resveratrol in grape skin extracts and wines was carried out by high-performance liquid chromatography. Favourable viticultural climate during harvest in 2012 resulted in a higher content of trans-resveratrol. The highest trans-resveratrol content was in Pinot Noir and Feteasca Neagra grape varieties, both in berry skins and wines, while the lowest amounts were identifi ed in Cabernet Sauvignon variety. We can conclude that there was a signifi cant correlation between the content of trans-resveratrol in grape skins and that in the respective wine.

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Optimization of capillary zone electrophoresis separation and on-line preconcentration of 16 phenolic compounds from wines produced in South America

Cited by 41 publications

References 34 publications

Influence of locality on content of phenolic compounds in white wines

Influence of locality on content of phenolic compounds in white wines

A capillary electrophoresis electrospray ionization-mass spectrometry method using a borate background electrolyte for the fingerprinting analysis of flavonoids in Ginkgo biloba herbal supplements

Monitoring trans-Resveratrol in Grape Berry Skins During Ripening and in Corresponding Wines by HPLC

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