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Article ; Online: Liposomes as selenium nanocarriers for foliar application to wheat plants: A biofortification strategy.

Viltres-Portales, Marcia / Sánchez-Martín, María-Jesús / Boada, Roberto / Llugany, Mercè / Valiente, Manuel

2024 Volume 448, Page(s) 139123

Abstract: In the present work, liposomes have been used as nanocarriers in the biofortification of wheat plants with selenium (Se) through foliar application. Liposomal formulations were prepared using 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) and ... ...

Abstract	In the present work, liposomes have been used as nanocarriers in the biofortification of wheat plants with selenium (Se) through foliar application. Liposomal formulations were prepared using 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) and Phospholipon®90H (P90H) (average size <100 nm), loaded with different concentrations of inorganic Se (selenite and selenate) and applied twice to the plants in the stage of vegetative growth. Liposomes enhanced Se uptake by wheat plants compared to direct application. The highest Se enrichment was achieved using the phospholipid DPPC and a concentration of 1000 μmol·L
MeSH term(s)	Triticum/chemistry ; Triticum/growth & development ; Triticum/metabolism ; Liposomes/chemistry ; Selenium/chemistry ; Selenium/metabolism ; Selenium/analysis ; Biofortification ; Plant Leaves/chemistry ; Plant Leaves/metabolism ; Plant Leaves/growth & development ; Nanoparticles/chemistry ; Drug Carriers/chemistry
Chemical Substances	Liposomes ; Selenium (H6241UJ22B) ; Drug Carriers
Language	English
Publishing date	2024-03-24
Publishing country	England
Document type	Journal Article
ZDB-ID	243123-3
ISSN	1873-7072 ; 0308-8146
ISSN (online)	1873-7072
ISSN	0308-8146
DOI	10.1016/j.foodchem.2024.139123
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Article ; Online: Phytochemical Profile, Bioactive Properties, and Se Speciation of Se-Biofortified Red Radish (

García-Tenesaca, Marilyn M / Llugany, Mercè / Boada, Roberto / Sánchez-Martín, María-Jesús / Valiente, Manuel

Journal of agricultural and food chemistry

2024 Volume 72, Issue 9, Page(s) 4947–4957

Abstract: The impact of selenium (Se) enrichment on bioactive compounds and sugars and Se speciation was assessed on different microgreens (green pea, red radish, and alfalfa). Sodium selenite and sodium selenate at a total concentration of 20 μM (1:1) lead to a ... ...

Abstract	The impact of selenium (Se) enrichment on bioactive compounds and sugars and Se speciation was assessed on different microgreens (green pea, red radish, and alfalfa). Sodium selenite and sodium selenate at a total concentration of 20 μM (1:1) lead to a noticeable Se biofortification (40-90 mg Se kg
MeSH term(s)	Humans ; Selenium/metabolism ; Raphanus/chemistry ; Pisum sativum ; Medicago sativa/metabolism ; Chlorophyll ; Phytochemicals
Chemical Substances	Selenium (H6241UJ22B) ; Chlorophyll (1406-65-1) ; Phytochemicals
Language	English
Publishing date	2024-02-23
Publishing country	United States
Document type	Journal Article
ZDB-ID	241619-0
ISSN	1520-5118 ; 0021-8561
ISSN (online)	1520-5118
ISSN	0021-8561
DOI	10.1021/acs.jafc.3c08441
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Article ; Online: Direct and indirect selenium speciation in biofortified wheat: A tale of two techniques

Subirana, Maria Angels / Boada, Roberto / Xiao, Tingting / Llugany, Mercè / Valiente, Manuel

Physiologia Plantarum. 2023 Jan., v. 175, no. 1 p.e13843-

2023

Abstract: Wheat can be biofortified with different inorganic selenium (Se) forms, selenite or selenate. The choice of Se source influences the physiological response of the plant and the Se metabolites produced. We looked at selenium uptake, distribution and ... ...

Abstract	Wheat can be biofortified with different inorganic selenium (Se) forms, selenite or selenate. The choice of Se source influences the physiological response of the plant and the Se metabolites produced. We looked at selenium uptake, distribution and metabolization in wheat exposed to selenite, selenate and a 1:1 molar mixture of both to determine the impact of each treatment on the Se speciation in roots, shoots, and grains. To achieve a comprehensive quantification of the Se species, the complementarity of high‐performance liquid chromatography coupled with inductively coupled plasma mass spectrometry and X‐ray absorption spectroscopy was exploited. This approach allowed the identification of the six main selenium species: selenomethionine, selenocysteine, selenocystine, selenite, selenate, and elemental selenium. The three treatments resulted in similar total selenium concentration in grains, 90–150 mg Se kg⁻¹, but produced different effects in the plant. Selenite enhanced root accumulation (66% of selenium) and induced the maximum toxicity, whereas selenate favored shoot translocation (46%). With the 1:1 mixture, selenium was distributed along the plant generating lower toxicity. Although all conditions resulted in >92% of organic selenium in the grain, selenate produced mainly C‐Se‐C forms, such as selenomethionine, while selenite (alone or in the mixture) enhanced the production of C‐Se‐Se‐C forms, such as selenocystine, modifying the selenoamino acid composition. These results provide a better understanding of the metabolization of selenium species which is key to minimize plant toxicity and any concomitant effect that may arise due to Se‐biofortification.
Keywords	X-ray absorption spectroscopy ; atomic absorption spectrometry ; biofortification ; high performance liquid chromatography ; metabolites ; physiological response ; selenates ; selenites ; selenium ; selenocysteine ; selenomethionine ; toxicity ; wheat
Language	English
Dates of publication	2023-01
Publishing place	Blackwell Publishing Ltd
Document type	Article ; Online
Note	JOURNAL ARTICLE
ZDB-ID	2020837-6
ISSN	1399-3054 ; 0031-9317
ISSN (online)	1399-3054
ISSN	0031-9317
DOI	10.1111/ppl.13843
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Article: Co-application of Se and a biostimulant at different wheat growth stages: Influence on grain development

Xiao, Tingting / Boada, Roberto / Llugany, Mercè / Valiente, Manuel

Plant physiology and biochemistry. 2021 Mar., v. 160

2021

Abstract: An appropriate selenium intake can be beneficial for human health. Se-biofortified food in Se-deficient regions is becoming an increasingly common practice but there are still issues to be addressed regarding the observed Se-induced toxicity to the plant. ...

Abstract	An appropriate selenium intake can be beneficial for human health. Se-biofortified food in Se-deficient regions is becoming an increasingly common practice but there are still issues to be addressed regarding the observed Se-induced toxicity to the plant. In this respect, plant biostimulants are used to enhance nutrition efficiency, abiotic stress tolerance and crop quality. In this work, the efficacy of a plant biostimulant to counteract the Se-induced stress in wheat plants is experimentally assessed. The co-application of different Se-biofortification treatments and the biostimulant at different growth stages (tillering or heading stage) was investigated. The use of micro focused X-ray spectroscopy allows us to confirm organic Se species to be the main Se species found in wheat grain and that the proportion of organic Se species is only slightly affected by the Se application stage. Our study proves that the biostimulant had a key role in the enhancement of both the amount of grains produced per spike and their dry biomass without hindering Se enrichment process, neither diminishing the Se concentration nor massively disrupting the Se species present. This information will be useful to minimize both plant toxicity and economic cost towards a more effective and plant healthy selenium supplementation.
Keywords	X-radiation ; abiotic stress ; biomass ; crop quality ; economic costs ; human health ; seed development ; selenium ; spectroscopy ; stress tolerance ; tillering ; toxicity ; wheat
Language	English
Dates of publication	2021-03
Size	p. 184-192.
Publishing place	Elsevier Masson SAS
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	742978-2
ISSN	1873-2690 ; 0981-9428
ISSN (online)	1873-2690
ISSN	0981-9428
DOI	10.1016/j.plaphy.2021.01.025
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Article ; Online: Effective Removal of Boron from Aqueous Solutions by Inorganic Adsorbents: A Review.

Lou, Xiang-Yang / Yohai, Lucia / Boada, Roberto / Resina-Gallego, Montserrat / Han, Dong / Valiente, Manuel

Molecules (Basel, Switzerland)

2023 Volume 29, Issue 1

Abstract: Increasing levels of boron in water exceeding acceptable thresholds have triggered concerns regarding environmental pollution and adverse health effects. In response, significant efforts are being made to develop new adsorbents for the removal of boron ... ...

Abstract	Increasing levels of boron in water exceeding acceptable thresholds have triggered concerns regarding environmental pollution and adverse health effects. In response, significant efforts are being made to develop new adsorbents for the removal of boron from contaminated water. Among the various materials proposed, inorganic adsorbents have emerged as promising materials due to their chemical, thermal, and mechanical stability. This review aims to comprehensively examine recent advances made in the development of inorganic adsorbents for the efficient removal of boron from water. Firstly, the adsorption performance of the most used adsorbents, such as magnesium, iron, aluminum, and individual and mixed oxides, are summarized. Subsequently, diverse functionalization methods aimed at enhancing boron adsorption capacity and selectivity are carefully analyzed. Lastly, challenges and future perspectives in this field are highlighted to guide the development of innovative high-performance adsorbents and adsorption systems, ultimately leading to a reduction in boron pollution.
Language	English
Publishing date	2023-12-21
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	1413402-0
ISSN	1420-3049 ; 1431-5165 ; 1420-3049
ISSN (online)	1420-3049
ISSN	1431-5165 ; 1420-3049
DOI	10.3390/molecules29010059
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Article ; Online: Selenium biofortification of microgreens: Influence on phytochemicals, pigments and nutrients.

Viltres-Portales, Marcia / Sánchez-Martín, María-Jesús / Llugany, Mercè / Boada, Roberto / Valiente, Manuel

Plant physiology and biochemistry : PPB

2023 Volume 206, Page(s) 108283

Abstract: Kale (Brassica oleracea L. var. sabellica L.), kohlrabi (Brassica oleracea L. var. gongylodes L.) and wheat (Triticum aestivum L. cv. Bancal) microgreens were cultivated in presence of selenium 20 μmol ... ...

Abstract	Kale (Brassica oleracea L. var. sabellica L.), kohlrabi (Brassica oleracea L. var. gongylodes L.) and wheat (Triticum aestivum L. cv. Bancal) microgreens were cultivated in presence of selenium 20 μmol L
MeSH term(s)	Humans ; Selenium/pharmacology ; Selenium/metabolism ; Biofortification/methods ; Antioxidants/metabolism ; Brassica/metabolism ; Phytochemicals/metabolism ; Nutrients
Chemical Substances	Selenium (H6241UJ22B) ; Antioxidants ; Phytochemicals
Language	English
Publishing date	2023-12-19
Publishing country	France
Document type	Journal Article
ZDB-ID	742978-2
ISSN	1873-2690 ; 0981-9428
ISSN (online)	1873-2690
ISSN	0981-9428
DOI	10.1016/j.plaphy.2023.108283
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Article ; Online: Co-application of Se and a biostimulant at different wheat growth stages: Influence on grain development.

Xiao, Tingting / Boada, Roberto / Llugany, Mercè / Valiente, Manuel

Plant physiology and biochemistry : PPB

2021 Volume 160, Page(s) 184–192

Abstract	An appropriate selenium intake can be beneficial for human health. Se-biofortified food in Se-deficient regions is becoming an increasingly common practice but there are still issues to be addressed regarding the observed Se-induced toxicity to the plant. In this respect, plant biostimulants are used to enhance nutrition efficiency, abiotic stress tolerance and crop quality. In this work, the efficacy of a plant biostimulant to counteract the Se-induced stress in wheat plants is experimentally assessed. The co-application of different Se-biofortification treatments and the biostimulant at different growth stages (tillering or heading stage) was investigated. The use of micro focused X-ray spectroscopy allows us to confirm organic Se species to be the main Se species found in wheat grain and that the proportion of organic Se species is only slightly affected by the Se application stage. Our study proves that the biostimulant had a key role in the enhancement of both the amount of grains produced per spike and their dry biomass without hindering Se enrichment process, neither diminishing the Se concentration nor massively disrupting the Se species present. This information will be useful to minimize both plant toxicity and economic cost towards a more effective and plant healthy selenium supplementation.
MeSH term(s)	Biofortification ; Edible Grain/drug effects ; Edible Grain/growth & development ; Seeds/drug effects ; Seeds/growth & development ; Selenium/pharmacology ; Triticum/drug effects ; Triticum/growth & development
Chemical Substances	Selenium (H6241UJ22B)
Language	English
Publishing date	2021-01-21
Publishing country	France
Document type	Journal Article
ZDB-ID	742978-2
ISSN	1873-2690 ; 0981-9428
ISSN (online)	1873-2690
ISSN	0981-9428
DOI	10.1016/j.plaphy.2021.01.025
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Article ; Online: Enhanced arsenite removal by superparamagnetic iron oxide nanoparticles in-situ synthesized on a commercial cube-shape sponge: adsorption-oxidation mechanism.

Lou, Xiang-Yang / Boada, Roberto / Simonelli, Laura / Valiente, Manuel

Journal of colloid and interface science

2022 Volume 614, Page(s) 460–467

Abstract: Hypothesis: The easy aggregation of superparamagnetic iron oxide nanoparticles (SPION) greatly reduces their adsorption performance for removing arsenic (As) from polluted water. We propose to exploit the porosity and good diffusion properties of a cube- ...

Abstract	Hypothesis: The easy aggregation of superparamagnetic iron oxide nanoparticles (SPION) greatly reduces their adsorption performance for removing arsenic (As) from polluted water. We propose to exploit the porosity and good diffusion properties of a cube-shaped cellulose sponge for loading SPION to reduce the aggregation and to develop a composite adsorbent in the cm-scale that could be used for industrial applications. Experiments: SPION were in-situ synthesized by co-precipitation using a commercial cube-shaped sponge (MetalZorb®) as support. The morphology, iron-oxide phase, adsorption performance and thermodynamic parameters of the composite adsorbent were determined to better understand the adsorption process. X-ray absorption spectroscopy (XAS) was used to investigate the chemical state of the adsorbed As(III). Findings: The adsorption of the supported SPION outperforms the unsupported SPION (ca. 14 times higher adsorption capacity). The modelling of the adsorption isotherms and the kinetic curves indicated that chemisorption is controlling the adsorption process. The thermodynamic analysis shows that the adsorption retains the spontaneous and endothermic character of the unsupported SPION. The XAS results revealed an adsorption-oxidation mechanism in which the adsorbed As(III) was partially oxidized to less toxic As(V) by the hydroxyl free radical (•OH) generated from Fe(III) species and by the hydroxyl groups.
MeSH term(s)	Adsorption ; Arsenic/chemistry ; Arsenites/chemistry ; Ferric Compounds/chemistry ; Hydrogen-Ion Concentration ; Kinetics ; Magnetic Iron Oxide Nanoparticles ; Water Pollutants, Chemical/chemistry ; Water Purification/methods
Chemical Substances	Arsenites ; Ferric Compounds ; Water Pollutants, Chemical ; Arsenic (N712M78A8G)
Language	English
Publishing date	2022-01-21
Publishing country	United States
Document type	Journal Article
ZDB-ID	241597-5
ISSN	1095-7103 ; 0021-9797
ISSN (online)	1095-7103
ISSN	0021-9797
DOI	10.1016/j.jcis.2022.01.119
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Article: Enhanced arsenite removal by superparamagnetic iron oxide nanoparticles in-situ synthesized on a commercial cube-shape sponge: adsorption-oxidation mechanism

Lou, Xiang-Yang / Boada, Roberto / Simonelli, Laura / Valiente, Manuel

Journal of colloid and interface science. 2022 May 15, v. 614

2022

Abstract: The easy aggregation of superparamagnetic iron oxide nanoparticles (SPION) greatly reduces their adsorption performance for removing arsenic (As) from polluted water. We propose to exploit the porosity and good diffusion properties of a cube-shaped ... ...

Abstract	The easy aggregation of superparamagnetic iron oxide nanoparticles (SPION) greatly reduces their adsorption performance for removing arsenic (As) from polluted water. We propose to exploit the porosity and good diffusion properties of a cube-shaped cellulose sponge for loading SPION to reduce the aggregation and to develop a composite adsorbent in the cm-scale that could be used for industrial applications.SPION were in-situ synthesized by co-precipitation using a commercial cube-shaped sponge (MetalZorb®) as support. The morphology, iron-oxide phase, adsorption performance and thermodynamic parameters of the composite adsorbent were determined to better understand the adsorption process. X-ray absorption spectroscopy (XAS) was used to investigate the chemical state of the adsorbed As(III).The adsorption of the supported SPION outperforms the unsupported SPION (ca. 14 times higher adsorption capacity). The modelling of the adsorption isotherms and the kinetic curves indicated that chemisorption is controlling the adsorption process. The thermodynamic analysis shows that the adsorption retains the spontaneous and endothermic character of the unsupported SPION. The XAS results revealed an adsorption-oxidation mechanism in which the adsorbed As(III) was partially oxidized to less toxic As(V) by the hydroxyl free radical (•OH) generated from Fe(III) species and by the hydroxyl groups.
Keywords	X-ray absorption spectroscopy ; adsorbents ; adsorption ; arsenic ; arsenites ; cellulose ; coprecipitation ; endothermy ; hydroxyl radicals ; iron oxides ; porosity ; thermodynamics ; toxicity ; water pollution
Language	English
Dates of publication	2022-0515
Size	p. 460-467.
Publishing place	Elsevier Inc.
Document type	Article
ZDB-ID	241597-5
ISSN	1095-7103 ; 0021-9797
ISSN (online)	1095-7103
ISSN	0021-9797
DOI	10.1016/j.jcis.2022.01.119
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Article: Decoupling the adsorption mechanisms of arsenate at molecular level on modified cube-shaped sponge loaded superparamagnetic iron oxide nanoparticles

Lou, Xiang-Yang / Boada, Roberto / Verdugo, Verónica / Simonelli, Laura / Pérez, Gustavo / Valiente, Manuel

Journal of environmental sciences (China). 2022 Nov., v. 121

2022

Abstract: In this study, a commercial cube-shaped open-celled cellulose sponge adsorbent was modified by in-situ co-precipitation of superparamagnetic iron oxide nanoparticles (SPION) and used to remove As(V) from aqueous solutions. Fe K-edge X-ray absorption ... ...

Abstract	In this study, a commercial cube-shaped open-celled cellulose sponge adsorbent was modified by in-situ co-precipitation of superparamagnetic iron oxide nanoparticles (SPION) and used to remove As(V) from aqueous solutions. Fe K-edge X-ray absorption spectroscopy (XAS) and TEM identified maghemite as the main iron phase of the SPION nanoparticles with an average size 13 nm. Batch adsorption experiments at 800 mg/L showed a 63% increase of adsorption capacity when loading 2.6 wt.% mass fraction of SPION in the cube-sponge. Experimental determination of the adsorption thermodynamic parameters indicated that the As(V) adsorption on the composite material is a spontaneous and exothermic process. As K-edge XAS results confirmed that the adsorption enhancement on the composite can be attributed to the nanoparticles loaded. In addition, adsorbed As(V) did not get reduced to more toxic As(III) and formed a binuclear corner-sharing complex with SPION. The advantageous cube-shape of the sponge-loaded SPION composite together with its high affinity and good adsorption capacity for As(V), good regeneration capability and the enhanced-diffusion attributed to its open-celled structure make this adsorbent a good candidate for industrial applications.
Keywords	X-ray absorption spectroscopy ; adsorbents ; adsorption ; arsenates ; cellulose ; composite materials ; coprecipitation ; heat production ; maghemite ; toxicity ; China
Language	English
Dates of publication	2022-11
Size	p. 1-12.
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	1092300-7
ISSN	1878-7320 ; 1001-0742
ISSN (online)	1878-7320
ISSN	1001-0742
DOI	10.1016/j.jes.2021.09.001
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