2020,    N 1 (39)    

BIOLOGICAL RESOURCES

Almughraby E., Kalimullin M.I., Mostyakova A.A., Timofeeva O.A.

Phytochemical composition of Brassica oleracea var. Sabellica in ontogenesis

The purpose of the work is to find out the changes in the content of phenolic compounds, flavonoids, vitamin C, carotenoids, protein and sugars in the plants of kale, depending on the age of the plants and growing conditions. Planting of kale was performed in early June 2019. Samples for analysis (leaves) were taken after 8, 12, 16, 20, and 24 weeks of planting at temperatures +16°C, +160С, +14°C, -6°C and -6°C, respectively. Brassica oleracea var. Sabellica, grown in Russia, is characterized by a high content of healthy compounds. The content of phenolic compounds, vitamin C and sugars was the highest in the 20 weeks after planting at a temperature -6°C, while the amount of carotenoids and protein reached the highest value in the earlier stages of development of kale – after 12 weeks at a temperature +16°C . Negative temperatures increase the content of phenolic compounds and vitamin C, as well as soluble sugars, thereby improving the taste of kale. The content of these compounds increased very significantly after exposure to temperature stress (20 weeks), however, in adapted plants (24 weeks), their content decreased. Obtained data allow us to recommend collect the harvest in late time, after the first frost to obtain the most valuable raw cabbage kale.

Keywords: CABBAGE KALE, NEGATIVE TEMPERATURES, ONTOGENESIS, PHENOLIC COMPOUNDS, FLAVONOIDS, CAROTENOIDS, VITAMIN C, PROTEINS, SUGAR