Advisor(s)
Abstract(s)
Biostimulants are a novel and eco-friendly agronomic tool with practical applications in alleviating negative effects of environmental stressors. The present work studied the effects of three biostimulant products (Nomoren (N), Twin-Antistress (TW), and X-Stress (XS)) under normal irrigation (W+) and water deficit irrigation conditions (W-) on the nutritional, chemical composition and bioactive properties of common bean fresh pods. A variable effect of biostimulants and water deficit irrigation was observed on nutritional value parameters, while fructose and sucrose were the main detected sugars, especially in NW+ and CW-treatments. Oxalic, malic, and citric acid were the main detected organic acids, while γ-and total tocopherol content was the highest in TWW+. (+)-Catechin and (-)-epicatechin were the most abundant phenolic compounds, especially in the NW-treatment. A variable antioxidant capacity was observed for the Thiobarbituric Acid Reactive Substances (TBARS) and Oxidative Haemolysis assays (OxHLIA), while TWW+ extracts showed the best overall results against the tested fungi. In conclusion, the tested biostimulants had a positive effect on chemical composition and bioactivities of purple bean depending on the irrigation regime.
Description
Keywords
Antimicrobial properties Antioxidant activity Bioactive properties Common bean Fatty acids Organic acids Phenolic compounds Proximate analyses Tocopherols Water deficit irrigation
Pedagogical Context
Citation
Fernandes, Ângela; Figueiredo, Sara; Finimundy, Tiane C.; Pinela, José; Tzortzakis, Nikolaos; Ivanov, Marija; Soković, Marina; Ferreira, Isabel C.F.R.; Petropoulos, Spyridon A.; Barros, Lillian (2021). Chemical composition and bioactive properties of purple french bean (Phaseolus vulgaris l.) as affected by water deficit irrigation and biostimulants application. Sustainability. ISSN 2071-1050. 13:12, p. 1-21