The introduction of new technology of enhanced biological value fruit wine production using the vegetable sugar substitute (concentrated stevia essence) in food and processing industry plants will permit to enlarge the range of Russian wine products manufactured from domestic natural fruit raw material. Besides, the using of domestic raw materials in the technology of enhanced biological value fruit wine production will permit to solve the import dependency problem and to replace the foreign wine products with domestic high quality competitive products, as well as to reduce the product costs which may be achieved by the partial replacement of sugar by the sugar substitute made of stevia. The natural plant sugar substitute stevia was used instead of sugar in order to reduce the energy density of fruit wines. The stevioside is resistant to thermal conditioning and it has a low decomposition level in different pH levels. The study of quality and bioavailability of wine specimen was made with use of standard methods. The analysis of fruit wine specimen bioavailability showed that blended wine based on black currant and blackberry is more replete with vitamins, minerals, and organic acids. The elaborated blended wines are valuables because they contains plant raw materials which are harmonically combined with each other and complement one another, making antioxidant effects. They are capable to slow aging and to improve metabolism as well as to prevent illnesses and to boost the immune system. The use of stevia essence as a sugar substitute in fabrication of demi-sweet fruit currant and blackberry blended wines permits to produce low-calorie wines with equal palatability.

Fruits and berries contain a large number of biologically active compounds: vitamins, minerals, organic acids. Wines made from fruit and berry raw materials are not inferior to grape ones in biological value, and sometimes even surpass them. Currently, significant volumes of fruit wines are imported into the Russian consumer market from other countries. The production of fruit and berry wines is mainly limited to the European part of Russia, which negatively affects the pricing of drinks in other regions. In this regard, the development of the wine industry may be the production of blending fruit and berry wines, which will provide the population with quality products made from local fruit and berry raw materials at affordable prices. The production technology and research results of the obtained samples of fruit and berry blend wines from the fruits of Sunberry and mountain ash, wild strawberries with different sugar content in the recipe are presented. Samples of fruit blending wines were prepared according to classical technology. Physico-chemical quality indicators of the studied wine samples were determined in the interdepartmental educational and analytical laboratory of the Nizhny Novgorod State Agricultural Academy. According to the results of evaluating the organoleptic and physico-chemical parameters of the developed samples of fruit wines, sample No. 3 turned out to be the best, as it had a pronounced harmonious aroma, pleasant taste, had the highest content of vitamin C and dry substances, and scored the most points. According to the results of a scoring of the organoleptic quality indicators of the studied samples of blending fruit wines, the least points were observed for sample No. 1 (5.25 points). In connection with the detection by all tasters of deviations from the norm.

Relevance. Legumes are considered a wonderful food source of biologically valuable components that can positively affect many physiological and metabolic processes. Lupine flour contains valuable protein, carotenoids, vitamin E, macroand microelements, is rich in magnesium, potassium, iron. A distinctive feature of lupin flour is the complete absence of gliadin and gluten in its composition, which is especially important for people with digestive disorders, white lupin seed processing products can serve as excellent components to increase the nutritional value of food, primarily such as bakery and flour confectionery.Methods. The materials of scientific research in the field of lupin production, the biochemical composition of its seeds, the feasibility of using lupin processing products in the production of food from plant raw materials have been studied.Results. Legumes play an important role in human nutrition and are part of the traditional diet of many regions around the world. Legumes, including white lupin, contain a significant amount of protein, fiber, trace elements and many valuable phytochemicals. As part of the daily diet, they can have a beneficial physiological effect and, thus, can help in the control and prevention of diseases of civilization, such as diabetes mellitus, coronary heart disease, atherosclerosis. A long-standing problem associated with legumes is a rather high content of anti-nutritional factors that can limit their biological value. According to current research, these compounds can be easily removed or reduced when processing conditions change; some of these substances may also have a positive effect on human health.

The results of the study of the natural sweetener effect from Stevia on the quality of two types of table semisweet fruit blended wine - from gooseberries and raspberries, gooseberries and black currants - in comparison with the classical recipe with sugar, are presented in the article. The recipes and the production technology of table blended fruit wine with Stevia extract as a sweetener were presented in the work. Stevia extract and sugar (control sample) were added after complete fermentation of sugars into dry wine material. The extract dose was 1.4 ml per 1 liter of wine material. Organoleptic and tasting evaluation of the finished product showed that wine with the addition of Stevia extract has good quality indicators, a pleasant taste without extraneous smacks. The sugar content was practically at zero point - 0.25 g / l in wine from gooseberries and raspberries, 0.28 g / l in wine from gooseberries and black currants. In the wine made by classical technology, the sugar content was 70.30 g / l and 71.10 g / l, respectively. The titrated acidity of the wine was within the requirements of the regulatory document and ranged from 9.0 to 10.9 g / dm3. The content of vitamin C and beta-carotene depended to a greater extent on the type of fruit and berry raw materials used. A higher content of ascorbic acid was noted in blended wine from gooseberries and black currants - at the level of 26.88–27.02 mg, beta-carotene - in wine from gooseberries and raspberries. The introduction of sugar or Stevia extract did not affect the values of these indicators much. According to the results of studies in the manufacture of blended fruit wines in order to reduce their calorie content and use as a functional product, the addition of Stevia extract is recommended