Biotesting of plasma-chemically activated water with the use of hydrobionts

Abstract

The study has determined the influence of plasma- chemically activated water and its level of toxicity on test objects. It has been established that the reaction of biological objects is positive, which is reflected in their livelihood. The obtained research results show that the nature of the influence of water of different structures on the species composition of the selected test objects depends on the individual properties of each of them. The influence of plasma-chemically activated water on the functional properties of Riccia fluitans, Lémna mínor L., Paramecium caudatum, Artemia salina and Cyprinus carpio has been investigated. The completed tests have helped supplement and substantiate the already existing idea about the properties of the plasma-chemically activated water and the possibilities of its use in the processing of raw materials and the manufacturing of finished products. In the course of the research, it was found that the Paramecium caudatum survival was 87-89.5 %, with no toxic effects of the plasma-chemically activated water on these objects. The cultivation of Artemia salina in water that had been pre-treated by the proposed method showed that the number of viable organisms had increased by 60-70 % compared with the reference. The obtained results of studying the influence of the plasma-chemically activated water on the development of Riccia fluitans and Lémna mínor L. indicate that the activation of growth processes is 7-39 % higher than in the reference. It has been determined that the cultivation of Cyprinus carpio in the treated water contributes to increasing the survival rate as it improved the test objects by 13 % and 6 %, respectively, as to the reference. Using the method of gas-discharge diagnostics has shown that the treatment of water with nonthermal plasma for 30 minutes contributes to increasing its biopotential. Consequently, the obtained results indicate the expediency of using plasma- chemically activated water for the production of food and feed. The established positive changes support information on the safety of using plasma-chemically activated water as a component of the food chain and prove the practical value of a comprehensive approach to innovative methods of preparing raw materials.