THE STUDY OF GRAPE SEED OIL OBTAINED BY EXTRACTION BY SUPERCRITICAL CARBON DIOXIDE
Abstract
The object of the study were grape seeds technical Rkatsiteli grown in the Derbent district and revised in September 2016 on Derbent cognac plant in the Republic of Dagestan.
The purpose of this study was to obtain oil by supercritical fluid extraction with carbon dioxide from grape Rkatsiteli and the determination of the quality and content of fatty acids in grape oil by gas-liquid chromatography with mass-selective detection.
The optimal conditions for obtaining high-quality unrefined grape oil for the food and pharmaceutical industry from grape seeds of the grade Rkatsiteli by CO2 extraction were determined: temperature 30 °С, pressure of carbon dioxide 350 atm., time 60 minutes. Under these optimal conditions, the predicted oil yield was 13.5%.
It is shown that the oil from the seeds of grapes of Rkatsiteli variety contains irreplaceable polyunsaturated fatty acids more than 88%, tocopherols 292 mg%, carotenoids 4.4 mg% and chlorophylls 5.9 mg%.
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