DEVELOPMENT OF VEGETABLE OIL BLENDS WITH A BALANCED FATTY ACID COMPOSITION

The aim of the study is to develop mixtures of vegetable oils with a ratio of ɷ6:ɷ3 PUFA in the range of 5–10:1. Tasks: to study the quality indicators of vegetable oils; to investigate the fractional composition of PUFA; apply mathematical modeling methods in the development of blends of vegetable oils. The results of the development of blends of vegetable oils with a ratio of polyunsaturated fatty acids (PUFA) ɷ6:ɷ3 in the range of 5–10:1 are presented. Organoleptic (color, transparency, taste and smell), physico-chemical (peroxide and acid numbers, vitamin E content) indicators and fractional composition of PUFA refined deodorized oils – sunflower of the first grade (manufacturer OOO Tovarnoe hozyajstvo (limited liability company), Saratov Region), rapeseed of the highest grade (OOO Armaz (limited liability company), Novosibirsk), corn brand "P" (AO Efko (joint-stock company), Belgorod Region) and unrefined cold-pressed chia oil (OOO Sibirskaya kletchatka (limited liability company), Tomsk Region). The compliance of the quality indicators of traditional oils with the norms of the current GOSTs and TR CU 024/11, chia oils with the requirements of the Codex Alimentarius, has been established. Codex Stan 210-1999 and TR TS 024/11. Good compatibility of the studied oils in terms of organoleptic characteristics for blending was revealed. A relatively high content of ά-tocopherol was found in sunflower (667.16±14.22 mg/kg) and rapeseed (554.63±10.14 mg/kg) oils, and relatively low content in corn (78.07±2.24 mg/kg), the average level is in chia oil (343.96±9.03 mg/kg). In all oils, an imbalance of PUFAs was determined: with a predominance of the ɷ6 (linoleic-cis acid) fraction – in traditional oils, the ɷ3 (ά-linolenic acid) family – in chia oil. With the help of mathematical modeling methods, where the “maximum content of vitamin E” and “minimum price” were the accompanying criteria, 6 blends were developed with a certain ratio of sunflower refined deodorized oil of the first grade (93.37–96.70 %) and unrefined sunflower oil cold-pressed (6.63–3.30 %), characterized by a balanced composition of ɷ6 and ɷ3 PUFAs in accordance with the regulated norms MP 2.3.1.0253-21.