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. 2024 Aug 21;29(16):3949. doi: 10.3390/molecules29163949.
Raspberry plants need intensive anti-fungal protection. A solution to this problem could be the application of an ozonation process. For this purpose, a technical solution was proposed and implemented in raspberry plant production. The proposal suggests replacing 25% of standard fungicide treatments with ozonation. It was demonstrated that the use of ozone under the proposed conditions made it possible to maintain stable parameters of chlorophyll content and fluorescence (no significant differences), but the intensity of gas exchange was increased. The greatest differences were observed in the second measurement period (T2), when the plants were in the stage of most active development. Additionally, the content and profile of low-molecular-weight antioxidants and the microbial load were determined in the collected fruits. In periods T2 and T3, the proposed method caused a reduction reaching ~2 log cfu g in the microbial content of raspberry fruits. It was shown that ozone treatment intensified the biosynthesis of low-molecular-weight antioxidants in fruit (increasing the total polyphenol content by more than 20%). The proposed scheme allows a 25% reduction in standard fungicide treatments while maintaining the health of cultivated raspberry plants. The reduction in fungicide use aligns with the EU regulations and produces fruit with better quality.
覆盆子植物需要密集的抗真菌保护。解决这个问题的方法可能是应用臭氧处理。为此，在覆盆子植物生产中提出并实施了一项技术解决方案。该提案建议用臭氧处理替代 25%的标准杀菌剂处理。结果表明，在提议的条件下使用臭氧可以保持叶绿素含量和荧光的稳定参数（无显著差异），但气体交换的强度增加了。在第二个测量期（T2）观察到最大的差异，此时植物处于最活跃的发育阶段。此外，在收集的果实中还测定了低分子量抗氧化剂的含量和分布以及微生物负荷。在 T2 和 T3 期间，所提议的方法导致微生物含量减少了约 2 个对数 cfu g。结果表明，臭氧处理加强了果实中低分子量抗氧化剂的生物合成（总多酚含量增加了 20%以上）。所提出的方案允许减少 25%的标准杀菌剂处理，同时保持栽培覆盆子植物的健康。减少杀菌剂的使用符合欧盟法规，并生产出质量更好的果实。
