The influence of secondary apple raw materials (frozen apple pomace) on organoleptic and physicochemical indicators of the quality of wheat bread has been studied. The traditional recipe of wheat bread was taken as a basis. In this recipe for the sample of bread No. 1, a part of the premium wheat flour was replaced with 25% rice flour and 10% frozen apple pomace. In the sample of bread No. 2, a part of the premium wheat flour was replaced with 12.5% rice flour and 10% fresh frozen apple pomace. For the organoleptic assessment, a five-point scale for assessing the quality of bread was developed, in which the maximum number of points up to5 was assigned to each indicator. According to the results of the study of the organoleptic indicators of the quality of the developed samples of bread using a point scale, it was found that they exceeded the control sample. The best was the sample with fresh frozen apple pomace10% and rice flour in the amount of 12.5%. In terms of physical and chemical indicators, the developed samples of wheat bread enriched with apple raw materials meet the regulatory requirements.

The expediency of including succinic acid (succinate) in wound healing gels has been studied and scientifically substantiated by infrared spectrometry. For this purpose, the interaction of antiseptic components of wound healing gels – metronidazole and iodinol with succinic acid in an aqueous medium was studied. In aqueous solutions of the studied substances, insignificant fluctuations of the wave numbers of the peak of 1642.27-1643.12 cm-1 were revealed, characterizing fluctuations in the C‒C valence bonds. Specific absorption peaks were also established: iodine compound with polyvinyl alcohol – 1555.22; 1232.06; 1066.00; metronidazole ‒ 2115.81, 1555.22, 1394.59, 1187.66 and 1088.40 and succinate – 2925.22, 2854.56, 2105.31, 1456.15, 1177.12, 1086.77. As the result of the conducted studies, it was found that succinic acid makes complex compounds with iodinol and metronidazole. The study of the IR spectra of the obtained compounds allows to suggest that they are formed by interaction of carboxyl group of succinic acid with C‒O groups of polyvinyl alcohol in iodinol and R2C=NH+ groups in metronidazole.