NATURAL JUICES FROM INTRODUCED SORTS OF GRAPE WITH WHITE BERRIES

MDBSAU

Abstract

Providing the population of the northern regions with high-quality natural food products is an actual task. Purpose of study is researching of the quality of natural juice made from introduced sorts of grape with white berries. Juices were prepared in accordance with the main technological instructions and normative materials for the production of canned goods (Technical regulation of the Customs Union 023/2011). Juices from the studied sorts had an appearance corresponding to the color of the sort (4.4-4.5 points), a harmonious flavor (4.3-4.7 points) and an aroma of the sort from slightly herbaceous to expressedmuscat (4.3-4.9 points). According to the general assessment of degustation, they exceeded the control by 0.2-0.4 points, in terms of the content of soluble solids - by 1.5-4.0 %, sugars - by 1.7-4.4 %. The content of titratable acids by sorts is low and varied within 0.6-0.9 %. The sugar-acid index by sorts ranged from 15.3-26.0 units. Its highest values were noted in the samples of juice prepared from sort Tambovsky white (25.8 units) and Tukay (26.0 units). Natural juices made from grape of sorts Krasa Severa, Varduva, Kristall, Tambovsky white, Tukay, cultivated in the forest-steppe of the Altai Ob region, according to the main physical and chemical indicators and organoleptic assessment, comply with the requirements of GOST 32101-2013 and Technical regulation of the Customs Union 023/2011. It is possible to produce juices of sorts from the researching sorts of grape.