Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece.
Molecules. 2022 May 29;27(11):3498. doi: 10.3390/molecules27113498.
The increasing demands of agriculture and the food market have resulted in intensive agricultural practices using synthetic fertilizers to maximize production. However, significant efforts have been made to implement more environmentally friendly procedures, such as composting, to overcome the adverse impact of these invasive practices. In the terms of this research, composting was applied to the production of two biofertilizers, using onion and mushroom by-products as raw materials respectively. The main purposes of this work were to identify the compounds that pass from the raw materials to the final products (onion-based and mushroom-based), as well as the characterization of the chemical profile of these final products following suspect and non-target screening workflows via UPLC-qToF-MS. Overall, 14 common compounds were identified in the onion and its final product, while 12 compounds were found in the mushroom and its corresponding product. These compounds belong to fatty acids, organic acids, and flavonoids, which could be beneficial to plant health. The determination of parameters, such as the pH, conductivity, organic matter, nitrogen content, and elemental analysis, were conducted for the overall characterization of the aforementioned products.
农业和食品市场需求的不断增长，导致了密集型农业实践的采用，使用合成肥料来最大化生产。然而，已经做出了重大努力来实施更环保的程序，如堆肥，以克服这些侵入性实践的不利影响。在这项研究中，堆肥被应用于两种生物肥料的生产，分别使用洋葱和蘑菇副产品作为原料。这项工作的主要目的是确定从原材料到最终产品（基于洋葱和基于蘑菇）传递的化合物，以及通过 UPLC-qToF-MS 进行嫌疑和非靶向筛选工作流程，对这些最终产品的化学特征进行表征。总的来说，在洋葱及其最终产品中鉴定出了 14 种常见化合物，而在蘑菇及其相应产品中发现了 12 种化合物。这些化合物属于脂肪酸、有机酸和类黄酮，对植物健康有益。对上述产品进行了 pH 值、电导率、有机质、氮含量和元素分析等参数的测定，以进行全面的表征。
