Toxicity Assessment of Cerium Oxide Nanoparticles in Cilantro (Coriandrum sativum L.) Plants Grown in Organic Soil

• Published in: Journal of agricultural and food chemistry Vol. 61; no. 26; pp. 6224 - 6230
• Main Authors: Morales, Maria Isabel, Rico, Cyren M, Hernandez-Viezcas, Jose Angel, Nunez, Jose E, Barrios, Ana Cecilia, Tafoya, Alejandro, Flores-Marges, Juan Pedro, Peralta-Videa, Jose R, Gardea-Torresdey, Jorge L
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 03.07.2013
• Subjects: ascorbate peroxidase; Biological and medical sciences; carbohydrates; cerium; Cerium - analysis; Cerium - metabolism; Cerium - toxicity; cilantro; Coriandrum - adverse effects; Coriandrum - chemistry; Coriandrum - growth & development; Coriandrum - metabolism; Coriandrum sativum; Food Contamination; Food industries; Fourier transform infrared spectroscopy; Fundamental and applied biological sciences. Psychology; human health; Humans; Metal Nanoparticles - analysis; Metal Nanoparticles - toxicity; nanoparticles; nutritive value; Organic Agriculture; organic soils; Plant Roots - adverse effects; Plant Roots - chemistry; Plant Roots - growth & development; Plant Roots - metabolism; Plant Shoots - adverse effects; Plant Shoots - chemistry; Plant Shoots - growth & development; Plant Shoots - metabolism; Risk Assessment; roots; shoots; Soil Pollutants - analysis; Soil Pollutants - metabolism; Soil Pollutants - toxicity; toxicity; cerium oxide nanoparticles; antioxidant enzymes’ activities; coriander; Enzyme; Toxicity; Coriander; Oxides; Antioxidant; Soils; antioxidant enzymes' activities; Dicotyledones; Angiospermae; Spermatophyta; Coriandrum sativum; Umbelliferae
• ISSN: 0021-8561; 1520-5118
• DOI: 10.1021/jf401628v

Studies have shown that CeO2 nanoparticles (NPs) can be accumulated in plants without modification, which could pose a threat for human health. In this research, cilantro (Coriandrum sativum L.) plants were germinated and grown for 30 days in soil amended with 0 to 500 mg kg–1 CeO2 NPs and analyzed by spectroscopic techniques and biochemical assays. At 125 mg kg–1, plants produced longer roots (p ≤ 0.05), and at 500 mg kg–1, there was higher Ce accumulation in tissues (p ≤ 0.05). At 125 mg, catalase activity significantly increased in shoots and ascorbate peroxidase in roots (p ≤ 0.05). The FTIR analyses revealed that at 125 mg kg–1 the CeO2 NPs changed the chemical environment of carbohydrates in cilantro shoots, for which changes in the area of the stretching frequencies were observed. This suggests that the CeO2 NPs could change the nutritional properties of cilantro.