Department of Food and Agriculture Production Engineering, University of Rzeszow, St. Zelwerowicza 4, 35-601 Rzeszow, Poland.
Department of Chemistry and Food Toxicology, University of Rzeszow, St. Ćwiklińskiej 1a, 35-601 Rzeszow, Poland.
Molecules. 2023 Jun 27;28(13):5038. doi: 10.3390/molecules28135038.
This paper presents the effects of irrigating barley plants with different type of water solutions saturated with gaseous ozone generated from atmospheric air. The study investigated the effects of the applied types of water on the modulation of the biosynthesis of selected bioactive compounds (content of total polyphenols, small molecule antioxidants, vitamin C) in the produced plant material. A number of transformations of reactive oxygen species (ROS) and nitrogen compounds have also been postulated; these are observed during the saturation of water with gaseous O and 30 min after the end of the process. It was shown that after the process of water saturation with gaseous O, the gas later is converted to compounds with high oxidative potential and good stability; these, in turn, lead to the oxidation of oxidates generated from atmospheric nitrogen into nitrates, which exhibit fertilising properties. Thirty minutes after the process of HO saturation with gaseous O was completed, the tests showed the highest concentrations of nitrates and the relatively high oxidative potential of the solution originating from HO with a low concentration of the dissolved O. This solution exhibited the highest activity modulating the biosynthesis of polyphenols, small molecule antioxidants and vitamin C in young barley plants. The resulting differences were significant, and they were reflected by 15% higher total polyphenol content, 35% higher antioxidative potential and 57% greater content of vitamin C compared to the control specimens (plants treated with fresh HO).
本文介绍了用大气中产生的气态臭氧饱和的不同类型水溶液灌溉大麦植株的效果。该研究调查了所施加的水类型对所产生植物材料中选定生物活性化合物（总多酚、小分子抗氧化剂、维生素 C 的含量）生物合成的调节作用。还提出了一些活性氧 (ROS) 和氮化合物的转化；这些在用水饱和气体 O 以及在该过程结束后 30 分钟时观察到。结果表明，在用水饱和气体 O 后，气体随后转化为具有高氧化电势和良好稳定性的化合物；这些化合物又将大气氮产生的氧化剂氧化成具有施肥特性的硝酸盐。在用水饱和气体 O 的过程完成 30 分钟后，测试显示了硝酸盐浓度最高，并且源自 HO 的溶液具有低溶解 O 浓度的相对较高的氧化电势。该溶液表现出最高的调节年轻大麦植物中多酚、小分子抗氧化剂和维生素 C 生物合成的活性。所得到的差异是显著的，与对照标本（用新鲜 HO 处理的植物）相比，总多酚含量提高了 15%，抗氧化潜力提高了 35%，维生素 C 含量提高了 57%。
