Escuela Profesional de Ingeniería Ambiental de la Universidad Nacional de Moquegua, Urb Ciudad Jardín-Pacocha-Ilo, Perú.
Laboratorio de Contaminantes Orgánicos y Ambiente del IINDEP de la Universidad Nacional de Moquegua, Urb Ciudad Jardín-Pacocha-Ilo, Perú.
PLoS One. 2024 Aug 22;19(8):e0307548. doi: 10.1371/journal.pone.0307548. eCollection 2024.
The present study assessed the impact of using irrigation water contaminated with Azithromycin (AZM) residues on the biomass and antioxidant compounds of purple corn; for this purpose, the plants were cultivated under ambient conditions, and the substrate used consisted of soil free from AZM residues, mixed with compost in a ratio of 1:1 (v/v). The experiment was completely randomized with four replications, with treatments of 0, 1, 10, and 100 μg/L of AZM. The results indicate that the presence of AZM in irrigation water at doses of 1 and 10 μg/L increases the weight of dry aboveground biomass, while at an amount of 100 μg/L, it decreases. Likewise, this study reveals that by increasing the concentration of AZM from 1 to 10 μg/L, total polyphenols and monomeric anthocyanins double, in contrast, with an increase to 100 μg/L, these decrease by 44 and 53%, respectively. It has been demonstrated that purple corn exposed to the antibiotic AZM at low doses has a notable antioxidant function in terms of DPPH and ORAC. The content of flavonols, phenolic acids, and flavanols increases by 57, 28, and 83%, respectively, when the AZM concentration is from 1 to 10 μg/L. However, with an increase to 100 μg/L, these compounds decrease by 17, 40, and 42%, respectively. On the other hand, stem length, root length, and dry weight of root biomass are not significantly affected by the presence of AZM in irrigation water.
本研究评估了使用含有阿奇霉素（AZM）残留的灌溉水对紫玉米生物量和抗氧化化合物的影响；为此，在环境条件下种植植物，使用的基质由不含 AZM 残留的土壤与堆肥以 1:1（v/v）的比例混合而成。该实验采用完全随机设计，设有 4 个重复，处理组分别为 0、1、10 和 100 μg/L 的 AZM。结果表明，灌溉水中 AZM 浓度为 1 和 10 μg/L 时会增加地上部干生物量的重量，而在 100 μg/L 时会降低。同样，本研究表明，随着 AZM 浓度从 1 增加到 10 μg/L，总多酚和单体花青素增加了一倍，而增加到 100 μg/L 时，它们分别减少了 44%和 53%。已经证明，暴露于低剂量抗生素 AZM 的紫玉米在 DPPH 和 ORAC 方面具有显著的抗氧化功能。当 AZM 浓度从 1 增加到 10 μg/L 时，类黄酮、酚酸和黄烷醇的含量分别增加了 57%、28%和 83%。然而，当浓度增加到 100 μg/L 时，这些化合物分别减少了 17%、40%和 42%。另一方面，茎长、根长和根生物量的干重不受灌溉水中 AZM 存在的显著影响。
