Publications by authors named "Yuan-Neng Jiang"
To understand the mechanism controlling cultivar differences in the accumulation of ciprofloxacin (CIP) in Chinese flowering cabbage (Brassica parachinensis L.), low-molecular-weight organic acids (LMWOAs) secreted from the roots of high- and low-CIP cultivars (Sijiu and Cutai, respectively) and their effects on the bioavailability of CIP in soil were investigated. Significant differences in the content of LMWOAs (especially maleic acid) between the two cultivars played a key role in the variation in CIP accumulation.
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- The study focused on tetracycline antibiotics found in soils from organic vegetable farms in Guangzhou, assessing their ecological risk.
- Four tetracycline compounds were detected in all samples analyzed, with doxycycline being the most prevalent.
- The levels of tetracycline compounds varied across farms, and while some samples exceeded ecotoxicity thresholds, overall concentrations were lower compared to other studies, disputing the notion that organic farms have higher antibiotic residues than conventional farms.
Article Synopsis
- The study investigates the presence of quinolone antibiotics in soil from organic farms in Southern China, finding that these compounds are widespread, with detection rates over 97%.
- The dominant antibiotic identified was enrofloxacin, with concentrations varying based on the type of vegetables grown, and open-field soils showing higher levels than greenhouse soils.
- Overall, while the concentrations of quinolones were found to be below the ecotoxic effect trigger value, the risk assessment suggested medium to low risks to bacterial populations.
Sixteen typical antibiotics including four tetracyclines, four quinolones, and eight sulfonamides in vegetables from manure-amended farm were determined using the ultra high performance liquid chromatography-tandem mass spectrometry and their health risks to human via the diet pathway was assessed. Most antibiotics were frequently detected in vegetable samples, with the detection rate from 11% to 90%. Concentrations of a single compound were mainly less than 5 microg x kg(-1) (D.
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