Analysis of total phenolic, flavonoids, anthocyanins and tannins content in Romanian red wines: Prediction of antioxidant activities and classification of wines using artificial neural networks

Hosu, Anamaria; Cristea, Mircea Vasile; Cimpoiu, Claudia

doi:10.1016/j.foodchem.2013.10.153

Cited by 159 publications

(104 citation statements)

References 23 publications

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“…The total tannins content (TTC) was determined by following a protocol described previously (Hosu et al., 2014) with volume adjustment. Two samples were prepared for each wine containing 200 μl of 10‐fold‐diluted wines, 300 μl of concentrated HCl, and 100 μl of distilled water.…”

Section: Methodsmentioning

confidence: 99%

“…The Δ A 470 and Δ A 570 were then expressed in terms of Δ A 520 using following formula: Δ A 520 = 1.1 × Δ A 470 and Δ A 520 = 1.54 × Δ A 470 . The lowest Δ A 520 value was chosen to estimate total tannin content as g/L of wine using following equation (Hosu et al., 2014): TTC = 15.7 × lowest Δ A 520 .…”

Section: Methodsmentioning

confidence: 99%

“…Screening of various parameters in wines and other food products is on rise in recent years because of their possible role in better health, nutritional value, and disease prevention. There are several reports on the quality of commercially produced wines from various countries such as Italy (Cassino et al., 2016; Garaguso & Nardini, 2015), China (Jiang & Zhang, 2012; Li, Wang, Li, Li, & Wang, 2009), Australia (Yoo, Prenzler, Saliba, & Ryan, 2011), Brazil (Gris et al., 2013), Czech Republic (Stratil et al., 2008), Portugal (Stratil et al., 2008), Romania (Hosu, Cristea, & Cimpoiu, 2014), and Spain (Gómez‐Plaza, Olmos, & Bautista‐Ortín, 2016). Screening of the parameters such as total phenols on commercial wine also helps to assess the quality wines and allocate them into different grades and price.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of secondary metabolites, antioxidant activity, and color parameters of Nepali wines

Pandeya

Rayamajhi

Pokhrel

et al. 2018

Food Science & Nutrition

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We evaluated the quality of wines produced in Nepal in terms of phenolic, flavonoid, anthocyanin and tannin content, antioxidant capacity, and color parameters using spectrophotometric methods. The total phenolic content, total flavonoid content, and total antioxidant activities in Nepali wines ranged from 85.5 to 960.0 (mean = 360.5 ± 268.7) mg/L GAE, 40.9–551.3 (mean = 188.9 ± 161.5) mg/L QE, and 66.6–905.0 (mean = 332.8 ± 296.5) mg/L AAE, respectively. These parameters were significantly higher in red wines compared to white wines. The phenolic and flavonoid content showed strong correlation with each other as well as with antioxidant activities. Additional parameters measured included various color parameters and carbohydrates. The wine color showed strong correlation with phenol, flavonoid, and antioxidant activity, whereas this correlation was not significant with anthocyanin content. Multivariate analysis was carried out to better describe and discriminate the wine samples. Finally, we compared Nepali wines with wines from other countries.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evaluation of secondary metabolites, antioxidant activity, and color parameters of Nepali wines

Pandeya

Rayamajhi

Pokhrel

et al. 2018

Food Science & Nutrition

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“…A number of them use polyphenol content or polyphenol profiles to classify or authenticate samples [3][4][5][6][7]. In addition, some studies only use anthocyanin profile to carry out these classifications [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Comparative study on the use of anthocyanin profile, color image analysis and near-infrared hyperspectral imaging as tools to discriminate between four autochthonous red grape cultivars from La Rioja (Spain)

Nogales-Bueno

Rodríguez-Pulido

Heredia

et al. 2015

Talanta

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a b s t r a c tThree independent methodologies were investigated to achieve the differentiation of red grapes from different grape varieties (Garnacha, Graciano, Mazuelo and Tempranillo) collected from five vineyards located in the D.O.Ca. Rioja. Anthocyanin chromatographic analysis, color image analysis and near infrared hyperspectral imaging were carried out for the grapes. Then, a Stepwise Linear Discriminant Analysis (SLDA) was developed for each data set in order to discriminate grapes according to their grape variety. As a result, using anthocyanin profile, color image analysis and near infrared hyperspectral imaging respectively, 88%, 54% and 100% of the samples were correctly classified in the internal validation process and 86%, 52% and 86% were correctly classified in the leave-one-out cross-validation process.

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“…The antioxidant activity of wines was confirmed also by using TEAC assay. The content of polyphenols was indicated a higher quantity of polyphenols in Muscat Ottonel wine (1310 mg GAE/L), followed by Feteasca Regala wine (810 mg GAE/L), values comparable with the total polyphenols content in some red wines [17,18], but lower than other red wines [19]. A lower quantity of polyphenols was found in Blasius wine, but comparable with some others Romanian white wines [20].…”

Section: Resultsmentioning

confidence: 69%

Blaj white wines characterization

Bleiziffer¹,

Suvar²,

Podea³

et al. 2017

Studia UBB Chemia

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Six white wines from Blaj vineyard obtained from clone and new created varieties of grapes, have been studied. Their volatile compounds, free amino acids, free fatty acids, content in polyphenols and flavonoid, antioxidant and antityrosinasic activity were compared. The results showed few differences among the analyzed wines. The volatile extracts of wines gave very similar compounds. The major compounds were phenylethyl alcohol. All the white wines of Blaj contained a large amounts of proline in comparison with the other amino acids and important essential amino acids. The fatty acids were found in very small quantities. Antioxidant activity and total content in polyphenols of wines showed that Muscat Ottonel have a very high antioxidant potential comparable with some red wines. The content in flavonoids is small in all white wines. Antityrosinasic activity of studied wine proved to be high to Blasius and Muscat Ottonel wine. The GC-MS method proved to be an excelent method for wine characterization.

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Analysis of total phenolic, flavonoids, anthocyanins and tannins content in Romanian red wines: Prediction of antioxidant activities and classification of wines using artificial neural networks

Cited by 159 publications

References 23 publications

Evaluation of secondary metabolites, antioxidant activity, and color parameters of Nepali wines

Evaluation of secondary metabolites, antioxidant activity, and color parameters of Nepali wines

Comparative study on the use of anthocyanin profile, color image analysis and near-infrared hyperspectral imaging as tools to discriminate between four autochthonous red grape cultivars from La Rioja (Spain)

Blaj white wines characterization

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