Დასავლეთ Საქართველოს Ავტოქთონური Ვაზის Ჯიშების Ფენოლური Ნაერთები

Kharadze, Maia; Vanidze, Maia; Kalandia, Aleko

doi:10.52340/9789941488177

Cited by 2 publications

(2 citation statements)

References 22 publications

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“…Our results correlated with data of Tsiakkas et al (2020) who found anthocyanin content of red wines from Cyprus ranged from 24.44±2.61 mg/dm 3 to 509.18±8.18 mg/dm 3 . Slightly higher levels of anthocyanins were found by Kharadze et al (2018) in a study of wines obtained from Georgian endemic varieties. The team found a variation in the anthocyanin content of the studied wines from 327.10 mg/dm 3 to 871.70 mg/dm 3 .…”

Section: Resultsmentioning

confidence: 97%

Study on the Content of Phenolic Compounds, Anthocyanins and Antioxidant Activity of Redgrapes and Wines From Central Northern Bulgaria

DIMITROV,

YONCHEVA,

ILIEV

2023

AgricultForest

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The content of phenolics and the antioxidant potential of grape must and wines from three varieties -Cabernet Sauvignon (introduced), Gamza (local) and Rubin (hybrid) grown in the terroir of the town of Pleven, Central Northern Bulgaria were investigated. The Rubin hybrid accumulated the most significant amount of phenols (TPC, FPC, NPC, and anthocyanins) identified in its grape must. This was reflected in the proved high antioxidant activity in the must of this variety. The highest content of TPC in the obtained wines from the studied varieties was found in Rubin. The results for the FPC of the wines tend to overlaped with the established anthocyanin content, namely in the order (Cabernet Sauvignon)>(Rubin)>(Gamza). It is well known that the anthocyanins are the part of FPC group. In this aspect our results were direct evidence that anthocyanins had a contribution to the formation of the total concentration of flavonoid phenolic compounds (FPC). The data on the established antioxidant activity in the red wines could be closely related to the NPC results of the wines. Gamza and Cabernet Sauvignon showed a close concentration presence of this group of phenols, which closely correlated with the values of the antioxidant activity found in their wines. The study proved high biological potential and good phenolic accumulation in grapes and wines of the studied varieties. The study enriches the field of viticultural and wine science with specific results on the biological potential of grapevine products from the Vitis vinifera L, under the conditions of a specific wine-growing region of Bulgaria.

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Section: Resultsmentioning

confidence: 97%

Study on the Content of Phenolic Compounds, Anthocyanins and Antioxidant Activity of Redgrapes and Wines From Central Northern Bulgaria

DIMITROV,

YONCHEVA,

ILIEV

2023

AgricultForest

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“…The antioxidant activity of oil samples was determined by the DPPH method. The results are given as 50% inhibition mg of sample, which is the amount of sample that inhibits the DPPH radical by 50% (the smaller the amount of sample is required for radical bleaching (mg), the higher the antioxidant activity is) (Gabour Sad et al., 2021 ; Kharadze, Djaparidze, et al., 2018 ; Kharadze, Japaridze, et al., 2018 ).…”

Section: Methodsmentioning

confidence: 99%

Optimization of the method of ultrasonic extraction of lycopene with a green extract from the fruit of Elaeagnus umbellata, common in Western Georgia

Surmanidze,

Vanidze,

Djafaridze

et al. 2024

Food Science & Nutrition

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The study determined the content of lycopene in the fruits of the Elaeagnus umbellata (35.25–60.21 mg/100 g), common at different heights above sea level in Western Georgia. For the effective extraction of lycopene as a biologically active substance, the optimal conditions for ultrasonic extraction were selected: sunflower oil was used as a “green solvent”; the ratio of solid mass and solvent was 1:50; temperature 30°C; ultrasound amplitude 40%; power 85 W; and extraction time 10 min. FTIR spectra revealed the characteristic functional groups of lycopene exhibiting two characteristic peaks at 2920 and 2950 cm−1. To explore the effect of lycopene on oil quality, the acid value, peroxide value, and p‐anisidine were determined in each oil sample. The antioxidant determination by inhibition of DPPH radicals showed significant differences in native oils and oils with lycopene.

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Დასავლეთ Საქართველოს Ავტოქთონური Ვაზის Ჯიშების Ფენოლური Ნაერთები

Cited by 2 publications

References 22 publications

Study on the Content of Phenolic Compounds, Anthocyanins and Antioxidant Activity of Redgrapes and Wines From Central Northern Bulgaria

Study on the Content of Phenolic Compounds, Anthocyanins and Antioxidant Activity of Redgrapes and Wines From Central Northern Bulgaria

Optimization of the method of ultrasonic extraction of lycopene with a green extract from the fruit of Elaeagnus umbellata, common in Western Georgia

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