1
|
Martinez-Aviño A, Moliner-Martinez Y, Molins-Legua C, Campins-Falcó P. Colorimetric analysis platform based on thin layer chromatography for monitoring gluten cross-contamination in food industry. Food Chem 2024; 448:139025. [PMID: 38522293 DOI: 10.1016/j.foodchem.2024.139025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 03/08/2024] [Accepted: 03/10/2024] [Indexed: 03/26/2024]
Abstract
Monitoring of the accidental presence of gluten (Glu), resulting from cross-contamination, is imperative in different industries, in particular food industry. The objective of this study was the development of an analytical platform utilizing thin-layer chromatography (TLC) with colorimetric read-out for making binary (yes/no) decisions on surfaces and/or point of these industries. The composition of the extractive phase was optimized with commercial products used in cleaning processing lines. Subsequently, an exploration of TLC separation and detection was undertaken. CN-modified nanosilica plates and 30:70 acetonitrile:water were used to achieve a selective signal for Glu residues. The study of the detection performance showed that both spectroscopic measurement and image analysis were resulted in satisfactory results for quantitate analysis (RSD = 5 %, LOD = 0.12 mg). The practical application of the proposed methodology on surfaces of the food processing lines. This work demonstrated the operational feasibility in detecting gluten cross-contaminations within the food processing industry.
Collapse
Affiliation(s)
- A Martinez-Aviño
- MINTOTA Research Group, Departament de Química Analítica, Facultat de Química, Universitat de Valencia, 46100 Burjassot, Spain
| | - Y Moliner-Martinez
- MINTOTA Research Group, Departament de Química Analítica, Facultat de Química, Universitat de Valencia, 46100 Burjassot, Spain.
| | - C Molins-Legua
- MINTOTA Research Group, Departament de Química Analítica, Facultat de Química, Universitat de Valencia, 46100 Burjassot, Spain
| | - P Campins-Falcó
- MINTOTA Research Group, Departament de Química Analítica, Facultat de Química, Universitat de Valencia, 46100 Burjassot, Spain
| |
Collapse
|
2
|
Buj-Acosta C, García-Sanz V, Hakobyan L, Tarazona-Álvarez B, Molins-Legua C, Campins-Falcó P, Paredes-Gallardo V, Tortajada-Girbés M. Volatile sulfur compounds in asthmatic children and adolescents: A cross-sectional study in breath and saliva. Int J Paediatr Dent 2024. [PMID: 38514460 DOI: 10.1111/ipd.13178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 01/15/2024] [Accepted: 02/28/2024] [Indexed: 03/23/2024]
Abstract
BACKGROUND Halitosis in children implies psychosocial repercussions. Risk factors associated with this condition are unclear, and detection methods are inaccurate. AIM To quantify the levels of sulfur-like compounds in children with asthma and healthy children from a novel validated assay, and to establish the risk factors related to halitosis. DESIGN One hundred and twenty-eight individuals (63 healthy and 65 asthmatic) from 3 to 17 years of age were tested using a passive colorimetric sensor to measure the levels of sulfur-like compounds in breath and saliva. Information was collected on oral hygiene habits, gingival and dental health, breathing type, and dental malocclusion. RESULTS The mean values of hydrogen sulfide were 4.0 ± 6.8 and 19.7 ± 12.2 ppbv (parts per billion in volume) in the control and asthmatic groups, respectively (p < .001). The presence of higher concentrations of sulfur compounds was significantly associated (p < .05) with the presence of gingival inflammation, tongue coating, dental plaque, mouth breathing, hypomineralization, age, tongue brushing, and the use of dental floss. CONCLUSION The level of sulfur in breath and saliva was significantly higher in patients with asthma. These results can serve as a precedent to raise awareness among paediatricians and parents about oral hygiene care in children and adolescents.
Collapse
Affiliation(s)
- Cindy Buj-Acosta
- Department of Stomatology, University of Valencia, Valencia, Spain
| | | | - Lusine Hakobyan
- MINTOTA Research Group, Department of Analytical Chemistry, University of Valencia, Valencia, Spain
| | | | - Carmen Molins-Legua
- MINTOTA Research Group, Department of Analytical Chemistry, University of Valencia, Valencia, Spain
| | - Pilar Campins-Falcó
- MINTOTA Research Group, Department of Analytical Chemistry, University of Valencia, Valencia, Spain
| | | | | |
Collapse
|
3
|
Pla-Tolós J, Serra-Mora P, Hakobyan L, Molins-Legua C, Moliner-Martinez Y, Campins-Falcó P. A sustainable on-line CapLC method for quantifying antifouling agents like irgarol-1051 and diuron in water samples: Estimation of the carbon footprint. Sci Total Environ 2016; 569-570:611-618. [PMID: 27376916 DOI: 10.1016/j.scitotenv.2016.06.181] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 06/21/2016] [Accepted: 06/22/2016] [Indexed: 06/06/2023]
Abstract
In this work, in-tube solid phase microextraction (in-tube SPME) coupled to capillary LC (CapLC) with diode array detection has been reported, for on-line extraction and enrichment of booster biocides (irgarol-1051 and diuron) included in Water Frame Directive 2013/39/UE (WFD). The analytical performance has been successfully demonstrated. Furthermore, in the present work, the environmental friendliness of the procedure has been quantified by means of the implementation of the carbon footprint calculation of the analytical procedure and the comparison with other methodologies previously reported. Under the optimum conditions, the method presents good linearity over the range assayed, 0.05-10μg/L for irgarol-1051 and 0.7-10μg/L for diuron. The LODs were 0.015μg/L and 0.2μg/L for irgarol-1051 and diuron, respectively. Precision was also satisfactory (relative standard deviation, RSD<3.5%). The proposed methodology was applied to monitor water samples, taking into account the EQS standards for these compounds. The carbon footprint values for the proposed procedure consolidate the operational efficiency (analytical and environmental performance) of in-tube SPME-CapLC-DAD, in general, and in particular for determining irgarol-1051 and diuron in water samples.
Collapse
Affiliation(s)
- J Pla-Tolós
- Departament de Química Analítica, Facultad de Química, Universitat de Valencia, C/ Doctor Moliner 50, E46100 Burjassot, Valencia, Spain
| | - P Serra-Mora
- Departament de Química Analítica, Facultad de Química, Universitat de Valencia, C/ Doctor Moliner 50, E46100 Burjassot, Valencia, Spain
| | - L Hakobyan
- Departament de Química Analítica, Facultad de Química, Universitat de Valencia, C/ Doctor Moliner 50, E46100 Burjassot, Valencia, Spain
| | - C Molins-Legua
- Departament de Química Analítica, Facultad de Química, Universitat de Valencia, C/ Doctor Moliner 50, E46100 Burjassot, Valencia, Spain
| | - Y Moliner-Martinez
- Departament de Química Analítica, Facultad de Química, Universitat de Valencia, C/ Doctor Moliner 50, E46100 Burjassot, Valencia, Spain.
| | - P Campins-Falcó
- Departament de Química Analítica, Facultad de Química, Universitat de Valencia, C/ Doctor Moliner 50, E46100 Burjassot, Valencia, Spain.
| |
Collapse
|
4
|
González-Fuenzalida RA, Moliner-Martínez Y, Molins-Legua C, Parada-Artigues V, Verdú-Andrés J, Campins-Falcó P. New Tools for Characterizing Metallic Nanoparticles: AgNPs, A Case Study. Anal Chem 2015; 88:1485-93. [DOI: 10.1021/acs.analchem.5b04751] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Rodrigo A. González-Fuenzalida
- MINTOTA Research Group. Departament
de Química Analítica, Facultat de Química, Universitat de Valencia, C/Doctor Moliner, 50, 46100 Burjassot, Valencia, Spain
| | - Yolanda Moliner-Martínez
- MINTOTA Research Group. Departament
de Química Analítica, Facultat de Química, Universitat de Valencia, C/Doctor Moliner, 50, 46100 Burjassot, Valencia, Spain
| | - Carmen Molins-Legua
- MINTOTA Research Group. Departament
de Química Analítica, Facultat de Química, Universitat de Valencia, C/Doctor Moliner, 50, 46100 Burjassot, Valencia, Spain
| | - Vanesa Parada-Artigues
- MINTOTA Research Group. Departament
de Química Analítica, Facultat de Química, Universitat de Valencia, C/Doctor Moliner, 50, 46100 Burjassot, Valencia, Spain
| | - Jorge Verdú-Andrés
- MINTOTA Research Group. Departament
de Química Analítica, Facultat de Química, Universitat de Valencia, C/Doctor Moliner, 50, 46100 Burjassot, Valencia, Spain
| | - Pilar Campins-Falcó
- MINTOTA Research Group. Departament
de Química Analítica, Facultat de Química, Universitat de Valencia, C/Doctor Moliner, 50, 46100 Burjassot, Valencia, Spain
| |
Collapse
|
5
|
Prieto-Blanco MC, Jornet-Martínez N, Moliner-Martínez Y, Molins-Legua C, Herráez-Hernández R, Verdú Andrés J, Campins-Falcó P. Development of a polydimethylsiloxane-thymol/nitroprusside composite based sensor involving thymol derivatization for ammonium monitoring in water samples. Sci Total Environ 2015; 503-504:105-112. [PMID: 25113949 DOI: 10.1016/j.scitotenv.2014.07.077] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 06/20/2014] [Accepted: 07/20/2014] [Indexed: 06/03/2023]
Abstract
This report describes a polydimethylsiloxane (PDMS)-thymol/nitroprusside delivery composite sensor for direct monitoring of ammonium in environmental water samples. The sensor is based on a PDMS support that contains the Berthelot's reaction reagents. To prepare the PDMS-thymol/nitroprusside composite discs, thymol and nitroprusside have been encapsulated in the PDMS matrix, forming a reagent release support which significantly simplifies the analytical measurements, since it avoids the need to prepare derivatizing reagents and sample handling is reduced to the sampling step. When, the PDMS-thymol/nitroprusside composite was introduced in water samples spontaneous release of the chromophore and catalyst was produced, and the derivatization reaction took place to form the indothymol blue. Thus, qualitative analysis of NH4(+) could be carried out by visual inspection, but also, it can be quantified by measuring the absorbance at 690 nm. These portable devices provided good sensitivity (LOD<0.4 mg L(-1)) and reproducibility (RSD <10%) for the rapid detection of ammonium. The PDMS-NH4(+) sensor has been successfully applied to determine ammonium in water samples and in the aqueous extracts of particulate matter PM10 samples. Moreover, the reliability of the method for qualitative analysis has been demonstrated. Finally, the advantages of the PDMS-NH4(+) sensor have been examined by comparing some analytical and complementary characteristics with the properties of well-established ammonium determination methods.
Collapse
Affiliation(s)
- M C Prieto-Blanco
- Grupo QANAP, Departamento de Química Analítica, Facultade de Ciencias, Universidade da Coruña, Campus de A Coruña, 15071 A Coruña, Spain
| | - N Jornet-Martínez
- Departmento de Química Analítica Grupo MINTOTA, Facultad de Química, Universidad de Valencia, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| | - Y Moliner-Martínez
- Departmento de Química Analítica Grupo MINTOTA, Facultad de Química, Universidad de Valencia, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| | - C Molins-Legua
- Departmento de Química Analítica Grupo MINTOTA, Facultad de Química, Universidad de Valencia, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| | - R Herráez-Hernández
- Departmento de Química Analítica Grupo MINTOTA, Facultad de Química, Universidad de Valencia, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| | - J Verdú Andrés
- Departmento de Química Analítica Grupo MINTOTA, Facultad de Química, Universidad de Valencia, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| | - P Campins-Falcó
- Departmento de Química Analítica Grupo MINTOTA, Facultad de Química, Universidad de Valencia, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain.
| |
Collapse
|
6
|
González-Fuenzalida RA, Moliner-Martínez Y, Prima-Garcia H, Ribera A, Campins-Falcó P, Zaragozá RJ. Evaluation of Superparamagnetic Silica Nanoparticles for Extraction of Triazines in Magnetic in-Tube Solid Phase Microextraction Coupled to Capillary Liquid Chromatography. Nanomaterials (Basel) 2014; 4:242-255. [PMID: 28344221 PMCID: PMC5304668 DOI: 10.3390/nano4020242] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 03/24/2014] [Accepted: 03/25/2014] [Indexed: 11/16/2022]
Abstract
The use of magnetic nanomaterials for analytical applications has increased in the recent years. In particular, magnetic nanomaterials have shown great potential as adsorbent phase in several extraction procedures due to the significant advantages over the conventional methods. In the present work, the influence of magnetic forces over the extraction efficiency of triazines using superparamagnetic silica nanoparticles (NPs) in magnetic in tube solid phase microextraction (Magnetic-IT-SPME) coupled to CapLC has been evaluated. Atrazine, terbutylazine and simazine has been selected as target analytes. The superparamagnetic silica nanomaterial (SiO2-Fe3O4) deposited onto the surface of a capillary column gave rise to a magnetic extraction phase for IT-SPME that provided a enhancemment of the extraction efficiency for triazines. This improvement is based on two phenomena, the superparamegnetic behavior of Fe3O4 NPs and the diamagnetic repulsions that take place in a microfluidic device such a capillary column. A systematic study of analytes adsorption and desorption was conducted as function of the magnetic field and the relationship with triazines magnetic susceptibility. The positive influence of magnetism on the extraction procedure was demonstrated. The analytical characteristics of the optimized procedure were established and the method was applied to the determination of the target analytes in water samples with satisfactory results. When coupling Magnetic-IT-SPME with CapLC, improved adsorption efficiencies (60%–63%) were achieved compared with conventional adsorption materials (0.8%–3%).
Collapse
Affiliation(s)
- R A González-Fuenzalida
- Department of Analytical Chemistry. Faculty of Chemistry, University of Valencia, Dr. Moliner 50, Burjassot, Valencia E-46100, Spain.
| | - Y Moliner-Martínez
- Department of Analytical Chemistry. Faculty of Chemistry, University of Valencia, Dr. Moliner 50, Burjassot, Valencia E-46100, Spain.
| | - Helena Prima-Garcia
- Instituto de Ciencia Molecular (ICMol), University of Valencia, Catedrático José Beltrán 2, Paterna, Valencia E-46980, Spain.
| | - Antonio Ribera
- Instituto de Ciencia Molecular (ICMol), University of Valencia, Catedrático José Beltrán 2, Paterna, Valencia E-46980, Spain.
| | - P Campins-Falcó
- Department of Analytical Chemistry. Faculty of Chemistry, University of Valencia, Dr. Moliner 50, Burjassot, Valencia E-46100, Spain.
| | - Ramon J Zaragozá
- Department of Organic Chemistry, Faculty of Chemistry, University of Valencia, Dr. Moliner 50, E-46100 Burjassot, Valencia E-46100, Spain.
| |
Collapse
|
7
|
González-Fuenzalida RA, Moliner-Martínez Y, González-Béjar M, Molins-Legua C, Verdú-Andres J, Pérez-Prieto J, Campins-Falcó P. In situ colorimetric quantification of silver cations in the presence of silver nanoparticles. Anal Chem 2013; 85:10013-6. [PMID: 24131247 DOI: 10.1021/ac402822d] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Silver ions (Ag(+)) can be quantified in situ in the presence of AgNPs by using a colorimetric sensing probe (3,3',5,5'-tetramethylbenzidine). Interestingly, it also enables detection of the Ag(+) adsorbed on the AgNP surface. This is relevant to design new methods to make AgNPs while ensuring the total reduction of Ag(+).
Collapse
Affiliation(s)
- R A González-Fuenzalida
- Department of Analytical Chemistry, University of Valencia Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| | | | | | | | | | | | | |
Collapse
|
8
|
Moliner-Martinez Y, Herráez-Hernández R, Molins-Legua C, Campins-Falcó P. Improving analysis of apolar organic compounds by the use of a capillary titania-based column: Application to the direct determination of faecal sterols cholesterol and coprostanol in wastewater samples. J Chromatogr A 2010; 1217:4682-7. [DOI: 10.1016/j.chroma.2010.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2010] [Revised: 04/23/2010] [Accepted: 05/03/2010] [Indexed: 12/01/2022]
|