Cuellar Mariela, Baroni Verónica, Pfaffen Valeria, Griboff Julieta, Ortiz Patricia, Monferrán Magdalena V
CRUB-CONICET - Centro Regional Universitario Bariloche, Universidad del Comahue, Quintral 1250, 8400, San Carlos de Bariloche, Rio Negro, Argentina.
ICYTAC-CONICET - Instituto de Ciencia y Tecnología de los Alimentos, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Bv. Juan Filloy S/N, 5000, Córdoba, Argentina.
Heliyon. 2021 Mar 8;7(3):e06086. doi: 10.1016/j.heliyon.2021.e06086. eCollection 2021 Mar.
Metals in the environment have been an increasing research topic over the past decade, since they can be found in both natural and drinking water, including irrigation of crops and edible plants with contaminated water. The aim of this study was to investigate the uptake of Cr by arugula () in a greenhouse experiment, simulating the open field irrigation conditions. We also evaluate the toxic effects of Cr on oxidative stress by measuring the antioxidant capacity and polyphenol profile in the plant. The study examines the irrigation of arugula, during 15 and 21 days, with four Cr (VI) concentrations, ranging from 0 (control) to 250 μg. L. Arugula plants were able to accumulate Cr when irrigated during 15 and 21 days in all the Cr concentrations evaluated. The estimated daily intake (EDI) shows that the amount of Cr accumulated by arugula plants does not represent a threat to human health. Application of Cr levels induced some changes in content, profile and capacity of antioxidants depending on Cr concentration and time of exposure. Taking into account that is consumed due to its polyphenol-related health benefits, the allowable Cr limits in irrigation water should be reviewed, in order to maximize health benefits associated with its consumption, and also to improve vegetable quality. Arugula is a valuable and nutritious food, that should not be excluded from a balanced diet. Chromium concentration in irrigation water as well as the speciation forms present in vegetables should be controlled.
在过去十年中，环境中的金属一直是一个日益受到关注的研究课题，因为它们存在于天然水和饮用水中，包括用受污染的水灌溉农作物和可食用植物。本研究的目的是在温室实验中模拟露天灌溉条件，研究芝麻菜对铬的吸收情况。我们还通过测量植物中的抗氧化能力和多酚谱来评估铬对氧化应激的毒性作用。该研究考察了在15天和21天内，用四种六价铬浓度（范围从0（对照）到250微克/升）灌溉芝麻菜的情况。在所有评估的铬浓度下，灌溉15天和21天的芝麻菜植株都能够积累铬。估计每日摄入量（EDI）表明，芝麻菜植株积累的铬量对人类健康不构成威胁。根据铬浓度和暴露时间的不同，施用不同水平的铬会导致抗氧化剂的含量、谱和能力发生一些变化。鉴于芝麻菜因其与多酚相关的健康益处而被食用，应重新审视灌溉水中铬的允许限量，以便在摄入芝麻菜时最大化相关健康益处，同时提高蔬菜品质。芝麻菜是一种有价值且营养丰富的食物，不应被排除在均衡饮食之外。应控制灌溉水中的铬浓度以及蔬菜中存在的形态。
