Naslov
Effect of Temperature Stress on the Concentration of Bioactive Compounds in Broccoli

Autori
Kokić, Emilie ; Zekirovski, Jana ; Šola, Ivana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
SiSB Abstract Book 2023 / - Zagreb : University of Zagreb, Faculty of Science, 2023, 28-28

Skup
Simpozij studenata bioloških usmjerenja 2023

Mjesto i datum
Zagreb, Hrvatska, 27.05.2023. - 28.05.2023

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
broccoli ; phenolics ; photosynthetic pigments ; phytochemicals ; temperature stress

Sažetak
Climate change is a global challenge that has changed the physiological and biochemical parameters of plants. Plants are sessile organisms and their survival depends on the effective activation of metabolic mechanisms of resistance to such stress. In the scope of this work, we investigated the influence of low (0⁰C) and high (80⁰C) water temperature on the metabolism of young broccoli plants (Brassica oleracea L. convar. botrytis (L.) Alef. var. cymosa Duch.) with the aim of adefining the parameters that indicate susceptibility or resistance of broccoli to stress caused by low and high water temperature, and b) evaluating the changes in selected parameters of broccoli metabolism due to these two types of stress. For the determination of bioactive compounds, we used high performance liquid chromatography and spectrophotometric methods. For all pigments, except chlorophyll a, a statistically significant difference was observed between the group treated with high temperature water and the remaining two groups (control and group treated with cold water). The highest proportion of chlorophyll b was found in the group treated with hot water. Regarding the proportions of total porphyrins and lycopene, a difference was also observed between the group treated with hot water and the other two groups. The proportion of carotenoids, on the other hand, was the lowest in the group treated with hot water. The proportion of total proanthocyanidins in young broccoli plants was the highest in the group treated with hot water, while the proportion of total hydroxycinnamic acids and flavonols was significantly lower in the group treated with hot water than in the other two groups. The proportion of the remaining four groups of compounds (total phenols, flavonoids, tannins and phenolic acids) in broccoli subjected to stress caused by high and low temperature water did not statistically differ from the control group.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Interdisciplinarne prirodne znanosti

POVEZANOST RADA