Detremination of free ammonia in samples of rainbow trout (Onchorynchys mykiss) using «SMARTBIOTIC»

Abstract

Fish is a product that, under improper storage and transportation conditions, can quickly undergo putrefactive spoilage, therefore, one of the indicators of fish spoilage is the detection of free ammonia in fish samples. The determination of ammonia formed during fish spoilage is based on the fact that it forms a white cloud of ammonium chloride in the presence of hydrochloric acid. According to the intensity, the rate of cloud formation and its stability, the degree of spoilage of fish is judged. the purpose of our study was to determine the effect of the use of the drug "SmartBiotic", produced on the basis of humic acids, on the quality and safety of the fish products obtained, namely, the detection of free ammonia in the selected samples of rainbow trout.Three groups of rainbow trout fingerlings (Oncorhynchus mykiss) were formed to conduct the study. One group served as a control, and the other two were experimental subjects. The first experimental group of fingerlings received the drug at a concentration of 0.15%, and the second experimental group – at a dose of 0.25%. In the control group of rainbow trout, the drug "SmartBiotic" was not used.