Species from Betula genus have been proven to have bioactive features, including anti-inflammatory, anti- carcinogenic and anti-rheumatic properties. They are either used for therapeutic or pharmacological purposes. There are a variety of types of products, from the well-known sap to tinctures or extracts, having different flavors, for a wider range of preferences. Thus, the purpose of this study was to compare the quality of liquid products produced from birch sap, from various companies and harvested naturally, in relation to the price of each product. This study required a thorough monitoring of prices over a period of several months, as well as qualitative and quantitative analyses. For the investigation of these indices, 6 types of products were used. The price rise research was conducted between November 2023 and January 2024, with 11 samples drawn from each type. All these tests reveal a link between the price of a product and its quality; thus, the more expensive products have a greater amount of sugar, which shows that the products have been preserved well.
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