Estimation du degré de polymérisation des procyanidines du raisin et du vin par la méthode au &amp;rho;-dimethylaminocinnamaldéhyde

Vivas, N.; Glories, Yves; Lagune, Laure; Cédric, Saucier; Augustin, Monique

doi:10.20870/oeno-one.1994.28.4.1138

Cited by 49 publications

(65 citation statements)

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“…Extractable flavanol content was determined following a modification of Vivas, Glories, Lagune, Saucier, and Augustin (1994). Ten microlitres of supernatant was mixed with 190 lL of methanol and 1 mL of p-dimethylaminocinnamaldehyde (DMACA) reagent.…”

Section: Determination Of Reference Parametersmentioning

confidence: 99%

Use of near infrared hyperspectral tools for the screening of extractable polyphenols in red grape skins

et al. 2015

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a b s t r a c tHyperspectral images of intact grapes were recorded at harvest time using a near infrared hyperspectral imaging system (900-1700 nm). Spectral data have been correlated with red grape skin extractable polyphenols (total phenolic, anthocyanins and flavanols) by modified partial least squares regression (MPLS) using a number of spectral pretreatments. The obtained results (coefficient of determination (RSQ) and standard error of prediction (SEP), respectively) for the developed models were: 0.82 and 0.92 mg g À1 of grape skin for extractable total phenolic content, 0.79 and 0.63 mg g À1 of grape skin for extractable anthocyanin content, 0.82 and 0.45 mg g À1 of grape skin for extractable flavanol content. The obtained results present a good potential for a fast and reasonably inexpensive screening of the extractable polyphenolic compounds in intact grapes. Moreover, the heterogeneity of extractable polyphenols within the ripeness stage has been also evaluated using the proposed method.

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Section: Determination Of Reference Parametersmentioning

confidence: 99%

Use of near infrared hyperspectral tools for the screening of extractable polyphenols in red grape skins

et al. 2015

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“…The total flavanol content was estimated using the pdimethylaminocinnamaldehyde (DMACA) method (Vivas et al, 1994;Li et al, 1996;McMorrough et al, 1996). Extract (0.2 mL), diluted 1:50 with methanol, was introduced into a 15-mL tube and added 1mL DMACA solution (0.1% in 1 N HCl in MeOH).…”

Section: Determination Of Total Flavanolsmentioning

confidence: 99%

Study of Some Qualitative and Quantitative Characters of the Grapes of Indigenous Greek Grapevine Varieties (Vitis vinifera L.) using HPLC and Spectrophotometric Analyses

GEROGIANNIS

Daskalakis

Bouza

et al. 2018

Not Bot Horti Agrobo

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Grape skins and seeds are sources of various quality characters of grapevine varieties, such as phenolic compounds, anthocyanins, resveratrol etc. The Greek vineyard is characterized by a large number of indigenous grapevine varieties which remain almost unexploited in terms of their different phenolic content. The aim of this study was to assay the polyphenolic content of seven red native Greek grapevine varieties ('Kolliniatiko', 'Bekari', 'Bakouri', 'Kountoura mavri', 'Doubrena mavri', 'Thrapsa', and 'Mavro Spetson') using high performance liquid chromatography (HPLC) coupled with a diode array detector and spectrophotometer. All studied varieties were cultivated in the same area and under the same conditions. The results revealed that despite the fact that anthocyanins and phenolic compounds content were in high levels for all varieties, statistically significant differences were recorded among them. The highest anthocyanins concentration was recorded in 'Kolliniatiko', while the lowest anthocyanins concentration was recorded in 'Mavro Spetson'. Grapevine variety 'Mavro Spetson' presented the highest concentration of total phenolic compounds, with statistically significant difference compared to 'Kountoura mavri' and 'Bekari'. Grapevine varieties 'Kolliniatiko' and 'Bekari' presented the highest concentrations in transresveratrol and piceid content, while grapevine variety 'Doubrena mavri' presented the highest concentration in vanillin content. These unexploited rare native cultivated varieties contained appreciable amounts of non-colored phenols as well as anthocyanins, meaning that they would be worthy of further study and use for the production of quality wines.

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“…Flavanol contents were determined following a modification of Vivas, Glories, Lagune, Saucier and Augustin [35]. Anthocyanin contents were determined by means of chromatographic analysis following a modification of the method of García-Marino, Hernández-Hierro, RivasGonzalo and Escribano-Bailón [36] as described in Hernández-Hierro, Nogales-Bueno, Rodríguez-Pulido and Heredia [37].…”

Section: Total Phenol Flavanol and Anthocyanin Extractability Determmentioning

confidence: 99%

Linking ATR-FTIR and Raman features to phenolic extractability and other attributes in grape skin

Nogales-Bueno

Baca-Bocanegra

Rooney³

et al. 2017

Talanta

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The importance of wine phenolics on the sensory characteristic of red wines is wellknown. Therefore, it is necessary to control the extractability of phenolic compounds from grape skins, which depends significantly on grape ripeness and hence, on cell wall degradation.In the present study, attenuated total reflectance Fourier transform infrared (ATR-FTIR) and Raman spectra of grape skin have been recorded. Then, these spectral matrices have been studied and the main spectral features have been linked to extractabilities of phenolic compounds (anthocyanins, flavanols and total phenols). Moreover, spectral differences between external and internal grape skin surfaces also have been studied.It has been confirmed that the amount of polysaccharides and the degree of esterification of pectins have significant influence on the phenolic extractability levels of grape skin tissue.

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Estimation du degré de polymérisation des procyanidines du raisin et du vin par la méthode au ρ-dimethylaminocinnamaldéhyde

Cited by 49 publications

References 0 publications

Use of near infrared hyperspectral tools for the screening of extractable polyphenols in red grape skins

Use of near infrared hyperspectral tools for the screening of extractable polyphenols in red grape skins

Study of Some Qualitative and Quantitative Characters of the Grapes of Indigenous Greek Grapevine Varieties (Vitis vinifera L.) using HPLC and Spectrophotometric Analyses

Linking ATR-FTIR and Raman features to phenolic extractability and other attributes in grape skin

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