Determination of anthocyanins in red wine using a newly developed method based on Fourier transform infrared spectroscopy

Soriano, A.; Pérez-Juan, P. M.; Vicario, A.; González, Josep M.; Pérez-Coello, M.S.

doi:10.1016/j.foodchem.2006.10.011

Cited by 63 publications

(43 citation statements)

References 13 publications

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“…Anthocyanin characteristic IR bands are shown in the regions at ∼1640 cm −1 and ∼3400 cm −1 , like earlier reports [63,64]. These bands are shown for AC/TiO 2 /Anthocyanin before and after the reaction, which indicates that the dye remains intact with the TiO 2 surface during the reaction process.…”

Section: Catalyst Stabilitysupporting

confidence: 85%

Anthocyanin-Sensitized TiO₂ Nanoparticles for Phenazopyridine Photodegradation under Solar Simulated Light

Zyoud

Saleh

Helal

et al. 2018

Journal of Nanomaterials

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Pharmaceutical wastes are emerging as water contaminants. Like other organic contaminants, it is necessary to find safe and economic methods to remove them from the water. In this work, anthocyanin was used as a natural dye sensitizer for the wide band gap nanosize rutile TiO 2 . The TiO 2 /Anthocyanin particles were supported on activated carbon particle surfaces. The resulting composite, which was prepared and characterized by different methods, was then used as a catalyst in the photodegradation of phenazopyridine (a model pharmaceutical contaminant) under a solar simulated light. Depending on experimental conditions, up to 90% of the contaminant was mineralized leaving no new organic products in the reaction mixture. The results show the feasibility of using the activated carbon-supported TiO 2 /Anthocyanin photocatalyst for pharmaceutical contaminant removal in water. The natural dye anthocyanin readily sensitized the TiO 2 to visible light. The unsupported TiO 2 , with its nanosize particles, was not easy to recover by simple separation methods, while the activated carbon-supported catalyst was easily isolated by decantation after reaction cessation. Moreover, the recovered AC/TiO 2 catalyst could also be regenerated by adding fresh anthocyanin sensitizer after recovery for further reuse. Keeping the contaminant molecules closer to the catalytic sites by adsorption, the support also enhanced the efficiency of photocatalyst.

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Section: Catalyst Stabilitysupporting

confidence: 85%

Anthocyanin-Sensitized TiO₂ Nanoparticles for Phenazopyridine Photodegradation under Solar Simulated Light

Zyoud

Saleh

Helal

et al. 2018

Journal of Nanomaterials

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“…R 2 values and relative standard deviation (RSD) were calculated for evaluation of the models and it was recorded that RSD values below 6.6 % indicated good repeatability. Except cyanidin-3-glucoside, prediction of anthocyanins from FT-IR spectra and PLS analysis was successful (Soriano et al 2007).…”

Section: Prediction Of Wine Quality Parametersmentioning

confidence: 99%

Application of Mid-infrared Spectroscopy for the Measurement of Several Quality Parameters of Alcoholic Beverages, Wine and Raki

2012

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Mid-infrared (IR) spectroscopy, which is a rapid and relatively small amount of waste producing technique, was used to predict several quality parameters of two types of alcoholic beverages, wine and raki. Mid-infrared spectra of red, rose and white wines and a traditional aniseed alcoholic beverage, raki were collected and relations were established between measured chemical parameters (pH, brix, total phenol content, anthocyanin content, titratable acidity, sugar content, electrical conductivity and some colour parameters) of these beverages and their infrared spectra using chemometric techniques. Partial least square regression provided excellent prediction of total phenol (R 2 00.97) and anthocyanin contents (R 2 00.98) of wine samples and a good prediction of pH (R 2 00.9), brix (R 2 00.92) and colour intensity (R 2 00.93) values were obtained. Brix, total phenol and sugar content of raki samples were also estimated very successfully (R 2 00.99) for raki and good prediction was obtained with pH value. Mid-IR spectroscopy in combination with chemometrics could be a promising technique for determination of several quality parameters of alcoholic beverages simultaneously and rapidly.

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“…The color of red wine is a major concern of wine industry since it strongly affects the consumer demands. Anthocyanin content is the main reason for the color of red wine and depends on the grape variety, degree of grape ripeness, soil and climatic conditions, and it undergoes a progressive change from production to consumption of any wine due to polymerization, copigmentation and oxidation reactions [2,3]. In terms of white wine, flavonols are the color pigments giving the yellow color of white wines [4].…”

Section: Introductionmentioning

confidence: 99%

Combination of visible and mid-infrared spectra for the prediction of chemical parameters of wines

Şen

Öztürk

Tokatlı

et al. 2016

Talanta

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a b s t r a c tRapid and environmentally friendly methods for the prediction of chemical compositions have been an interest in the wine industry. The objective of the study was to show the potentials of combined use of visible and mid-infrared (MIR) spectroscopies to improve the prediction of various chemical compounds of wine as opposed to using mid-infrared range only. Wine samples of twelve grape varieties from two harvest years were analyzed. The chemical composition of wine samples was related to MIR and visible spectra using orthogonal partial least square (OPLS) regression technique. The prediction abilities were tested with crossvalidation and independent validation sets. The coefficient of determination of validation (R 2 val ) for anthocyanin compounds of red wines were between 0.76 and 0.90, and that for total phenol content was 0.90. Range of R 2 val for glycerol, glycerol/ethanol ratio, malic acid, o-coumaric acid and°B rix were between 0.77 and 0.96. The spectral ranges that played significant roles in the predictions were also determined. The validations with independent data sets showed that the combination of visible and MIR ranges with multivariate methods improved the prediction of anthocyanin compounds and total phenols; produced comparable results for the rest of the parameters as MIR. This is the first study in the literature that shows the practical use of visible spectra along MIR. The combined use of these spectral ranges with multivariate models can be applied for the rapid, on-line determination of quality parameters and chemical profiles of wines.

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Determination of anthocyanins in red wine using a newly developed method based on Fourier transform infrared spectroscopy

Cited by 63 publications

References 13 publications

Anthocyanin-Sensitized TiO₂ Nanoparticles for Phenazopyridine Photodegradation under Solar Simulated Light

Anthocyanin-Sensitized TiO₂ Nanoparticles for Phenazopyridine Photodegradation under Solar Simulated Light

Application of Mid-infrared Spectroscopy for the Measurement of Several Quality Parameters of Alcoholic Beverages, Wine and Raki

Combination of visible and mid-infrared spectra for the prediction of chemical parameters of wines

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Determination of anthocyanins in red wine using a newly developed method based on Fourier transform infrared spectroscopy

Cited by 63 publications

References 13 publications

Anthocyanin-Sensitized TiO2 Nanoparticles for Phenazopyridine Photodegradation under Solar Simulated Light

Anthocyanin-Sensitized TiO2 Nanoparticles for Phenazopyridine Photodegradation under Solar Simulated Light

Application of Mid-infrared Spectroscopy for the Measurement of Several Quality Parameters of Alcoholic Beverages, Wine and Raki

Combination of visible and mid-infrared spectra for the prediction of chemical parameters of wines

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Product

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Anthocyanin-Sensitized TiO₂ Nanoparticles for Phenazopyridine Photodegradation under Solar Simulated Light

Anthocyanin-Sensitized TiO₂ Nanoparticles for Phenazopyridine Photodegradation under Solar Simulated Light