The concentration distribution of components and particles in the system: tomato-water-sodium nitrate and assessment of the oxidation-reduction potential at different temperatures

Abstract

The paper considers a triple complex system of tomato, water and sodium nitrate. Taking intoaccount the average macronutrient composition and moisture content of field and greenhousetomatoes, physicochemical modeling of the system was carried out tomato-water-sodiumnitrate. The hydrogen index of tomato was determined at various temperatures and it was notedthat tomato medium was acidic. It is shown that with an increase in the content of sodium nitratein the system: tomato - water - sodium nitrate within the temperature range from 278 to 293 K,the hydrogen index of tomato increases, i.e. the process of neutralizing the acidic medium basedon sodium hydroxide proceeds. The calculated hydrogen value of tomato corresponds to theexperimental values of pH = 3.3-4.38. The obtained results made it possible to determine thedistribution of individual simple and complex cations and anions in water-salt solution, as wellas to establish the values of redox potential, and thereby revealed the antioxidant nature oftomato.