RESEARCH OF CHEMICAL COMPOSITION OF JUICE FROM FRUITS OF SMALL-FRUITED APPLE TREES GROWING IN TERRITORY OF KRASNOYARSK KRAI

doi: 10.25712/ASTU.2072-8921.2021.03.004

Abstract

The article considers the assessment and comparative analysis of the quality of juice from the fruits of small-fruited apple trees of various varieties growing on the territory of the Krasnoyarsk Krai. The fruits of small-fruited apple trees are much smaller than the fruits of apple cultivars grown in the Krasnoyarsk Krai, but they are distinguished by their frost resistance and abundant annual fruiting. Siberian varieties are sour and tart in taste. Apple fruits are a natural source of compounds with antioxidant properties. The chemical composition of apple juice is influenced by many factors, including the properties of the raw materials and processing technologies. The quality of juices from fruits of small-fruited apple trees is the primary interest not only for consumers, but also for all participants in the entire production chain for the development of functional products. A chemical analysis of the studied juices was carried out. Analysis included several parameters: the content of soluble solids, sucrose, glucose and fructose, pH, acidity, the total amount of phenolic compounds, and the formal number. These parameters affect the nutritional value, sensory properties and health benefits of apple juice. Based on the results of the studies, we carried out confirm that the content of soluble solids is a good indicator of the sugar content in fruits of small-fruited apple trees and, presumably, sweetness. Sugar, organic acids and phenolic compounds contribute to the apple flavor. It was established that juices from fruits of small-fruited apple trees can enter the category of apple juices on the basis of their chemical characteristics for further study and use in food production.