Вестник МГТУ, 2021, Т. 24, №4.

Вестник МГТУ. 2021. Т. 24, № 4. С. 396-407. DOI: https://doi.org/10.21443/1560-9278-2021-24-4-396-407 In fat-containing products and raw materials during storage as a result of further oxidation of the primary oxidation products - unstable hydroperoxide compounds - secondary oxidation products are formed. Some by­ products of fat oxidation are toxic and have a negative physiological effect on the human body. In addition, they cause the deterioration in sensorial characteristics, in particular odour. Therefore, it is very important to study the formation of secondary oxidation products during storage o f MDPM and the effect of antioxidants to reduce the intensity o f this process. The formation of secondary fat oxidation products (aldehydes, ketones, etc.) is monitored by the malonic aldehyde index - TBN - a conventional value characterizing the content of malonic aldehyde (MA) and determined by the colour of the interaction of aldehyde groups with 2-thiobarbituric acid. The TBN value is expressed in milligrams of MA per 1 kg of product. The results o f studies of the dynamics of the secondary oxidation products formation in MDPM in a cooled state are shown in Fig. 3. 0,53 I l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l 0,62 0,91 Г 0,51 0 57 0,78 w w w w w w w w w v ......................................................... k N X W W W W W N X W 0 41 ay 4 0,49 0,52 0,68 0,77 0,46 0,63 Л \\\\\\\\\\\> И III l l l l l l l l l III III l l l l l l l 0,29 0,33 0, 0,21 24 III III III Mill 0,59 0,62 0,5 5 0,14 0,17 4\\\ 0,10 0,12 v \ v 0 0,15 0,08 0,10 0,11 0,10 0,19 0,29 0,46 5 I 0,51 0,69 0,82 0,0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0 Thiobarbituric number, pg MA/kg > Fat soluble rosemary extract 11Dehydroquercetin □ Control 2 □ Control 1 8 7 6 5 3 2 0 1 Fig. 3. Effects of biologically active compounds on the indicators of the formation of secondary products of oxidation o f the MDPM fatty complex during storage in a chilled state Рис. 3. Влияние биологически активных соединений на показатели образования вторичных продуктов окисления жирового комплекса МПМО во время хранения в охлажденном состоянии 403