Effect of environmental conditions and water status on the bioactive compounds of broccoli

Abstract

Four experiments were carried out in 2010 and 2011 to determine how cultivation period (spring or autumn), harvest season (summer or autumn), and plant water status (irrigated or rainfed) influenced content and composition of broccoli cultivar Parthenon F1 with respect to sulforaphane and phenolics under field conditions in Gödöllő, Hungary. Sulforaphane content was significantly higher in the autumn harvests, regardless of irrigation treatments. Harvest season also influenced total phenolics content, with the highest values occurring in the spring season. Harvest season also affected trolox equivalent antioxidant capacity (TEAC) and this capacity was also the greatest in spring. Caffeic acid glucoside was a major phenolics component in both spring and autumn season harvests. The season and irrigation related changes in other phenolic component contents were also characterised in this study.

The effects of plant density and irrigation on phenolic content in cauliflower

“…Many researchers have shown that environmental factors and agronomic conditions may influence the content of phytochemicals in cruciferous vegetables (Vallejo et al 2003;Gliszczyńska-Świgło et al 2007;Schmidt et al 2010;Björkman et al 2011;Fallovo et al 2011;Pék et al 2013;Reilly et al 2014). Our results showed that plant density and irrigation had a significant effect on both phenolic acid and flavonol content in cauliflower curds.…”

“…The work of Khosh-Khui et al (2012) showed that long-term drought caused a reduction in total phenolic content in thyme. On the other hand, Pék et al (2013) did not observed any detectable pattern of the effects of irrigation on total phenolic production in broccoli. Similarly, Rajabbeigi et al (2013) found that quercetin content in lettuce was not significantly affected by drought stress.…”

“…The content of phytochemicals in Brassicaceae vegetables may be influenced by genetics as well as environmental factors (Vallejo et al 2003;Gliszczyńska-Świgło et al 2007;Schmidt et al 2010;Björkman et al 2011;Fallovo et al 2011;Pék et al 2013;Reilly et al 2014). Agronomic practices can also significantly affect the levels of these compounds (Vallejo et al 2003;Robbins et al 2005;Björkman et al 2011;Fallovo et al 2011;Pék et al 2013;Reilly et al 2014).…”

“…Agronomic practices can also significantly affect the levels of these compounds (Vallejo et al 2003;Robbins et al 2005;Björkman et al 2011;Fallovo et al 2011;Pék et al 2013;Reilly et al 2014). Several studies have demonstrated that the levels of active compounds in Brassicaceae can be increased by the use of appropriate crop management strategies (Schreiner 2005;Krumbein et al 2010).…”

Effect of irrigation on yield parameters and antioxidant profiles of processing cherry tomato

“…Chromatographic separation and compounds identification as well as quantification of phenols was performed on EC NUCLEODUR Sphinx RP, 3 µm, 150 x 4.6 analytical column using gradient elution using a procedure previously described [32].…”