FUNCTIONAL ISOTONIC DRINKS BASED ON THE TISSUE FLUID OF RHOPILEMA JELLYFISH

A formulation for the preparation of isotonic drinks based on the tissue fluid of the rhopilema jellyfish (Rhizostomeae) Rhopilema Asamushi is proposed. While jellyfish are made up primarily of water (up to 97% of undried weight), the main chemical factors in maintaining the water-salt balance of jellyfish tissues under environmental pressure conditions are free amino acids (up to 10% of dry weight) and various mineral elements (up to 65% of dry weight). The proportion of the latter significantly exceeds the protein component (up to 20% of dry weight), which distinguishes jellyfish from most species of animals. Prevailing tissue elements are sodium, potassium, calcium, magnesium, iron, zinc, copper, chromium and selenium. Known technologies of jellyfish processing are aimed at obtaining a dense and stable structure of the semi-finished product, while the liquid fraction is removed during processing. In so doing, at least 70% of all water content, as well as mineral elements, free amino acids and water-soluble proteins dissolved in it, are lost. Herein, a method is proposed for separating the liquid fraction of jellyfish tissues from high-molecular impurities using the ultrafiltration method. Due to the presence of low molecular weight soluble components, the solution obtained can serve as the basis for the creation of isotonic drinks containing biologically active substances. As a result, a formulation of isotonic drinks is developed, which brings the value of the osmotic pressure of the obtained product to the limits of the established norms (270-330 mOsm/kg). In this regard, the composition of the formulation includes carbohydrates (glucose and fructose) in the amount of 6,5 g per 100 ml of product. Additionally, a preservative, acidity stabilisers and antioxidants (citric and ascorbic acids) are used, as well as the berry extracts in order to impart attractive organoleptic properties to product. In addition to performing the function of restoring the water-salt balance, these drinks can serve as additional sources of such mineral components as iron, chromium and selenium.

isotonic drinks, osmolality, mineral elements, amino acids, Rhopilema jellyfish

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