Aim. To determine the quality of diterpene glycoside powders, produced in Ukraine using the stevia leaves of plants of domestic and foreign origin. Methods. Differential scanning calorimetry and thermographic analy- sis. Results. It was demonstrated that the increase in the production of powders of diterpene glycosides in the world results in stepping up the requirements to the selection material of stevia and the quality of powders, obtained from its leaves as a fi nal product. The quality of diterpene glycoside powders, produced in Ukraine us- ing the stevia leaves of plants of domestic and foreign origin, was investigated. Conclusions. It was determined that special attention in the analysis of the powder samples of diterpene glycosides should be paid to the sample preparation: increased humidity of the sample promotes a weakening of carbohydrate bonds and rapid decline in their quality. Differential scanning calorimetry allows determining the content of additives, the degree of moisture saturation, and may further be used in the screening of selection samples and forecasting the shelf life of powders of diterpene glycosides.

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The production of stevia is one of the cost-effi cient industries of the world, regardless of processing only dry leaves into substances of different degree of sweetness. Aim. The aim is to create the technology of complex processing of the aboveground part of stevia. Methods. Modern methods and technologies of determining quality indices for the concentrate were used. Results. The experimental and theoretical studies were used to suggest the technological scheme of complex processing of the aboveground part of dried stevia. Conclusions. The suggested technology allows ensuring complete processing of the aboveground part of stevia to obtain sub- stances of different degrees of sweetness as well as additional amounts of fl orazole, a complex of aminoacids, feed additive and pellets.

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