The present study was conducted to determine the content of Stilbenes in the several autochthonous West Georgian grapes and wines. Stilbenes were analyzed using HPLC-UV samples and were prepared using resin (amberlite XAD2) column, C18 Cartridge Solid Phase Extraction (SPE) Waters Sep-Pak C18 (500 mg). The identification was achieved using UPLC-PDA and MS analysis. The study was conducted on the following Stilbenes and their derivatives -Astringin, Piceid, Trans/cis resveratrol, and ε-Viniferin. The amount of stilbenes in grapes was determined as: Aladasturi-131.9±4.8 mg kg-1, Aleksandrouli 148.2±4.9 mg kg-1, Mujuretuli 215.3±7.9 mg kg-1 , Chkhaveri 77.5 ±2.5 mg kg-1, Ojaleshi 260.71±9.1mg kg-1 . In red wines the content of Stilbenes was Aladasturi-19.17±0.5 mg kg-1, Aleksandrouli 14. 87±0.4 mg kg-1, Mujuretuli 21.36±0.5 mg kg-1, Chkhaveri 14.5±0.4 mg kg-1, Ojaleshi 60.8±2.2 mg kg-1.
The present study was conducted to determine the content of four mineral elements in honeys originating from different regions of West Georgia. Sodium (Na), Potassium (K), Calcium (Ca), magnesium (Mg), and Ammonium (NH4+) were analyzed by HPLC-Conductivity, column “Cation” (3.9x150mm) solvent 0.1 mM EDTA 3mM HNO3, following the microwave digestion of the honey. High mineral contents were observed in the investigated honeys with K, Na, Ca and Mg being the most abundant elements with mean concentrations in Chestnut honey 5000-7000 ppm, 56-150 ppm, 40-230 ppm, 25-130 ppm, respectively. In Lime (Tilia) honey - 2400-2600 ppm, 30-50 ppm, 160-180 ppm, 45-60 ppm, Acacia honey 300-500 ppm, 35-45 ppm, 85-95 ppm, 15-25 ppm, Field honey -750-930 ppm, 35-45 ppm, 75-130 ppm, 25-35 ppm, Spring polyflora honey - 630-650 ppm, 45-50 ppm, 280-300 ppm, 25-35 ppm, Autumn polyflora Honey – 2500-3000 ppm, 80-100 ppm, 250-300 ppm, 80-100 ppm respectively. The correlation dependence was between the content of cations in the honey and conductivity (Chestnut honey 1.4 µs/cm, Lime (Tilia), honey 0.5 µs/cm, Acacia honey 0.16 µs/cm, Field honey 0.55 µs/cm, Spring polyflora honey 1.2 µs/cm, Autumn polyflora Honey 1.3 µs/cm)
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