TiO<sub>2</sub> nanoparticle exposure on lettuce (<i>Lactuca sativa</i> L.): dose-dependent deterioration of nutritional quality

Hu, Jing; Wu, Xinyi; Wu, Fan; Chen, Weixiao; Zhang, Xinyu; White, Jason C.; Li, Junli; Wan, Yi; Liu, Junfeng; Wang, Xilong

doi:10.1039/c9en01215j

Cited by 32 publications

(30 citation statements)

References 44 publications

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“…Also, the contents of chlorophyll were significantly increased at 50 mg·L –1 . Hu et al 38 also reported a similar effect, they found that the treatment of lettuce with nTiO 2 increased the content of soluble protein and chlorophyll. However, a significant decrease in chlorophyll content was observed when exposed to 500 mg·L –1 ZnO QDs.…”

Section: Discussionmentioning

confidence: 64%

“… 51 Essential nutrients elements such as Ca, Zn, Fe, Mn, B, and Mg play important roles in the growth of plants. 38 The increased content of nutrient elements in leaves can improve the nutritional quality of the edible tissues. 52 In this work, lettuce being exposed to the lower concentrations from 50 to 200 mg·L –1 increased the accumulation of essential elements, such as Ca, Fe, Mn, and Zn, but the content of Ca, Fe, Mn, and B decreased when treated with high concentrations (500 mg·L –1 ).…”

Section: Discussionmentioning

confidence: 99%

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Dose-Dependent Effect of ZnO Quantum Dots for Lettuce Growth

Liang

Pan

et al. 2021

ACS Omega

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As the cadmium-free semiconductor quantum dots, ZnO quantum dots (ZnO QDs) have wide potential applications in agriculture. However, the effects of ZnO quantum dots on crop growth and nutritional quality have not been fully studied. In this work, the lettuce was sprayed with different concentrations of ZnO QDs from 50 to 500 mg·L –1 to evaluate their influence on lettuce antioxidant, biomass, and nutritional quality. The results showed that ZnO QDs existed in the lettuce in the form of Zn 2+ . Lettuce treated with 500 mg·L –1 ZnO QDs would produce a large amount of reactive oxygen species (ROS), which adversely affected the absorption of nutrients, soluble protein content, and chlorophyll content, thus reducing plant biomass. When the concentrations range from 50 to 200 mg·L –1 , the antioxidant enzyme systems of lettuce were triggered to counteract the damage caused by excessive ROS. Moreover, ZnO QDs at this level promoted Ca, Mg, Fe, Mn, Zn, and B absorption and accumulation; increased soluble sugar content; and improved the lettuce biomass and nutritional quality.

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Section: Discussionmentioning

confidence: 64%

Section: Discussionmentioning

confidence: 99%

Dose-Dependent Effect of ZnO Quantum Dots for Lettuce Growth

Liang

Pan

et al. 2021

ACS Omega

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“…To our best of knowledge, no studies visualize the effect of TiO 2 NMs in alfalfa. However, some studies have determined a reduced nutritional quality and micronutrient content for metal base NMs in other species (Bellani et al, 2020;Hu et al, 2020;Missaoui et al, 2021;Rui et al, 2018). Micronutrient de ciency may be subjected to multiple factors like climate or microbiota present in the soil and the interaction between root/nanoparticles.…”

Section: Germination and Morphological Datamentioning

confidence: 99%

“…al., 2020;Hu et al, 2020;Missaoui et al, 2021;Rui et al, 2018). Micronutrient de ciency may be subjected to multiple factors like climate or microbiota present in the soil and the interaction between root/nanoparticles.…”

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confidence: 99%

Secondary Metabolites Evaluation On Medicago Sativa L. Plants Treated By (Fe, Ag, Cu)-TiO2 Nanostructured Materials Towards Sustainable Agriculture.

Páramo¹,

Feregrino-Pérez²,

Guevara-González³

et al. 2021

Preprint

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The present study analyzed Medicago sativa L. crops irrigated by TiO2 in the anatase phase and TiO2 doped with Ag, Fe, Cu ions at 0.1%w synthesized by the sol-gel method (SG) and the sol-gel coupled with microwaves (Mw-SG). The materials were added to the irrigation water at different concentrations (50, 100, and 500 ppm). Affectation levels were observed by measuring stem morphology, chlorophyll content, secondary metabolite content (total phenolic, flavonoids), and antioxidant activity by 2,2-diphenyl-1-picrylhydrazyl radical assay. The results revealed a reduction in stem and leave size at different concentrations and chlorophyll content, showing no correspondence with the applied dose. Nanostructured materials in the soil generated nitrogen, boron, and potassium deficiencies observed in leaves. No linear effect related to the increase in total gallic acid, rutin content, and antioxidant activity dependent on concentration was determined. The stress factor depended on the dopant type, generating different stress levels at the three organs investigated (leaves, roots, stem). The metabolite augmentation was mainly obtained at 100 and 500 ppm for both synthesis methods.

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“…Since ancient times, it has been the most widely used material as a coloring agent [ 116 ]. However, in 2018 the French national assembly revised the guidelines with the amendment to ban the use, import, and sale of nano-scale TiO 2 as a food additive in any kind of food by 2020 [ 117 ]. Because of the fact that limited information is available on the safe usage of these NPs in consumer products, their potential hazards for their users need to be assessed.…”

Section: Understanding the Mechanism Of Environmental Exposure Of mentioning

confidence: 99%

Exposure Route of TiO2 NPs from Industrial Applications to Wastewater Treatment and Their Impacts on the Agro-Environment

Zahra

Habib

Chung³

et al. 2020

Nanomaterials

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The tremendous increase in the production and consumption of titanium dioxide (TiO2) nanoparticles (NPs) in numerous industrial products and applications has augmented the need to understand their role in wastewater treatment technologies. Likewise, the deleterious effects of wastewater on the environment and natural resources have compelled researchers to find out most suitable, economical and environment friendly approaches for its treatment. In this context, the use of TiO2 NPs as the representative of photocatalytic technology for industrial wastewater treatment is coming to the horizon. For centuries, the use of industrial wastewater to feed agriculture land has been a common practice across the globe and the sewage sludge generated from wastewater treatment plants is also used as fertilizer in agricultural soils. Therefore, it is necessary to be aware of possible exposure pathways of these NPs, especially in the perspective of wastewater treatment and their impacts on the agro-environment. This review highlights the potential exposure route of TiO2 NPs from industrial applications to wastewater treatment and its impacts on the agro-environment. Key elements of the review present the recent developments of TiO2 NPs in two main sectors including wastewater treatment and the agro-environment along with their potential exposure pathways. Furthermore, the direct exposure routes of these NPs from production to end-user consumption until their end phase needs to be studied in detail and optimization of their suitable applications and controlled use to ensure environmental safety.

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TiO₂ nanoparticle exposure on lettuce (Lactuca sativa L.): dose-dependent deterioration of nutritional quality

Abstract: 50–400 mg L−1 TiO2 NPs negatively impacted the nutritional quality of lettuce in a dose-dependent fashion.

Cited by 32 publications

References 44 publications

Dose-Dependent Effect of ZnO Quantum Dots for Lettuce Growth

Dose-Dependent Effect of ZnO Quantum Dots for Lettuce Growth

Secondary Metabolites Evaluation On Medicago Sativa L. Plants Treated By (Fe, Ag, Cu)-TiO2 Nanostructured Materials Towards Sustainable Agriculture.

Exposure Route of TiO2 NPs from Industrial Applications to Wastewater Treatment and Their Impacts on the Agro-Environment

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TiO2 nanoparticle exposure on lettuce (Lactuca sativa L.): dose-dependent deterioration of nutritional quality

Abstract: 50–400 mg L−1 TiO2 NPs negatively impacted the nutritional quality of lettuce in a dose-dependent fashion.

Cited by 32 publications

References 44 publications

Dose-Dependent Effect of ZnO Quantum Dots for Lettuce Growth

Dose-Dependent Effect of ZnO Quantum Dots for Lettuce Growth

Secondary Metabolites Evaluation On Medicago Sativa L. Plants Treated By (Fe, Ag, Cu)-TiO2 Nanostructured Materials Towards Sustainable Agriculture.

Exposure Route of TiO2 NPs from Industrial Applications to Wastewater Treatment and Their Impacts on the Agro-Environment

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TiO₂ nanoparticle exposure on lettuce (Lactuca sativa L.): dose-dependent deterioration of nutritional quality