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Tormena CD, Rutledge DN, Rakocevic M, Bruns RE, Scarminio IS, Marcheafave GG, Pauli ED. Exogenous application of bioregulators in Coffea arabica beans during ripening: Investigation of UV–Visible and NIR mixture design-fingerprints using AComDim-ICA. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ferreira SL, Scarminio IS, Veras G, Bezerra MA, da Silva Junior JB. Special issue – XI Brazilian Chemometrics Workshop Preface. Food Chem 2022; 390:133113. [DOI: 10.1016/j.foodchem.2022.133113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Alvarez-Mora I, Mijangos L, Lopez-Herguedas N, Amigo JM, Eguiraun H, Salvoch M, Monperrus M, Etxebarria N. SETApp: A machine learning and image analysis based application to automate the sea urchin embryo test. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 241:113728. [PMID: 35689888 DOI: 10.1016/j.ecoenv.2022.113728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 05/24/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
Since countless xenobiotic compounds are being found in the environment, ecotoxicology faces an astounding challenge in identifying toxicants. The combination of high-throughput in vivo/in vitro bioassays with high-resolution chemical analysis is an effective way to elucidate the cause-effect relationship. However, these combined strategies imply an enormous workload that can hinder their implementation in routine analysis. The purpose of this study was to develop a new high throughput screening method that could be used as a predictive expert system that automatically quantifies the size increase and malformation of the larvae and, thus, eases the application of the sea urchin embryo test in complex toxicant identification pipelines such as effect-directed analysis. For this task, a training set of 242 images was used to calibrate the size-increase and malformation level of the larvae. Two classification models based on partial least squares discriminant analysis (PLS-DA) were built and compared. Moreover, Hierarchical PLS-DA shows a high proficiency in classifying the larvae, achieving a prediction accuracy of 84 % in validation. The scripts built along the work were compiled in a user-friendly standalone app (SETApp) freely accessible at https://github.com/UPV-EHU-IBeA/SETApp. The SETApp was tested in a real case scenario to fulfill the tedious requirements of a WWTP effect-directed analysis.
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Affiliation(s)
- Iker Alvarez-Mora
- Department of Analytical Chemistry, University of the Basque Country, Leioa, Biscay, Basque Country 48080, Spain; Plentzia Marine Station, University of the Basque Country, Plentzia, Biscay, Basque Country 48620, Spain.
| | - Leire Mijangos
- Department of Analytical Chemistry, University of the Basque Country, Leioa, Biscay, Basque Country 48080, Spain; Plentzia Marine Station, University of the Basque Country, Plentzia, Biscay, Basque Country 48620, Spain.
| | - Naroa Lopez-Herguedas
- Department of Analytical Chemistry, University of the Basque Country, Leioa, Biscay, Basque Country 48080, Spain; Plentzia Marine Station, University of the Basque Country, Plentzia, Biscay, Basque Country 48620, Spain.
| | - Jose M Amigo
- Department of Analytical Chemistry, University of the Basque Country, Leioa, Biscay, Basque Country 48080, Spain; Ikerbasque, Basque Foundation for Science, Bilbao, Biscay, Basque Country 48009, Spain.
| | - Harkaitz Eguiraun
- Plentzia Marine Station, University of the Basque Country, Plentzia, Biscay, Basque Country 48620, Spain; Department of Graphic Design and Engineering Projects, University of the Basque Country, Bilbao, Biscay, Basque Country 48013, Spain.
| | - Maddi Salvoch
- Department of Analytical Chemistry, University of the Basque Country, Leioa, Biscay, Basque Country 48080, Spain; Plentzia Marine Station, University of the Basque Country, Plentzia, Biscay, Basque Country 48620, Spain.
| | - Mathilde Monperrus
- Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les matériaux, Université de Pau et des Pays de l'Adour, Angelu, Basque Country 64000, France.
| | - Nestor Etxebarria
- Department of Analytical Chemistry, University of the Basque Country, Leioa, Biscay, Basque Country 48080, Spain; Plentzia Marine Station, University of the Basque Country, Plentzia, Biscay, Basque Country 48620, Spain.
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Salvador MV, Kock FVC, Santos IL, Paulino JFC, de Almeida CP, dos Santos Garcia RH, Benchimol-Reis LL, Colnago LA, Ferreira AG. Monitoring Stimulated Darkening from UV-C Light on Different Bean Genotypes by NMR Spectroscopy. Molecules 2022; 27:molecules27072060. [PMID: 35408459 PMCID: PMC9000581 DOI: 10.3390/molecules27072060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/17/2022] [Accepted: 03/21/2022] [Indexed: 02/04/2023] Open
Abstract
The use of UV-C cool white light on bean (Phaseolus vulgaris L.) seeds significantly increases the biochemical seed coat post-harvest darkening process, whilst preserving seed germination. The aim of this work consists in monitoring the effect caused by the incidence of UV-C light on different bean genotypes using NMR spectroscopy. The genotype samples named IAC Alvorada; TAA Dama; BRS Estilo and BRS Pérola from the Agronomic Institute (IAC; Campinas; SP; Brazil) were evaluated. The following two methodologies were used: a prolonged darkening, in which the grain is placed in a room at a controlled temperature (298 K) and humidity for 90 days, simulating the supermarket shelf; an accelerated darkening, where the grains are exposed to UV-C light (254 nm) for 96 h. The experiments were performed using the following innovative time-domain (TD) NMR approaches: the RK-ROSE pulse sequence; one- and two-dimensional high resolution (HR) NMR experiments (1H; 1H-1H COSY and 1H-13C HSQC); chemometrics tools, such as PLS-DA and heat plots. The results suggest that the observed darkening occurs on the tegument after prolonged (90 days) and accelerated (96 h) conditions. In addition, the results indicate that phenylalanine is the relevant metabolite within this context, being able to participate in the chemical reactions accounted for by the darkening processes. Additionally, it is possible to confirm that a UV-C lamp accelerates oxidative enzymatic reactions and that the NMR methods used were a trustworthy approach to monitor and understand the darkening in bean seeds at metabolite level.
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Affiliation(s)
- Marília Vilela Salvador
- Departamento de Química, Universidade Federal de São Carlos, Rodovia Washington Luís, São Carlos 13565-905, Brazil; (M.V.S.); (A.G.F.)
| | - Flávio Vinícius Crizóstomo Kock
- Departamento de Química, Universidade Federal de São Carlos, Rodovia Washington Luís, São Carlos 13565-905, Brazil; (M.V.S.); (A.G.F.)
- Correspondence:
| | - Isabella Laporte Santos
- Centro de Recursos Genéticos Vegetais, Instituto Agronômico de Campinas, Av. Barão de Itapura 1481, Campinas 13075-630, Brazil; (I.L.S.); (J.F.C.P.); (C.P.d.A.); (L.L.B.-R.)
| | - Jean Fausto Carvalho Paulino
- Centro de Recursos Genéticos Vegetais, Instituto Agronômico de Campinas, Av. Barão de Itapura 1481, Campinas 13075-630, Brazil; (I.L.S.); (J.F.C.P.); (C.P.d.A.); (L.L.B.-R.)
| | - Caléo Panhoca de Almeida
- Centro de Recursos Genéticos Vegetais, Instituto Agronômico de Campinas, Av. Barão de Itapura 1481, Campinas 13075-630, Brazil; (I.L.S.); (J.F.C.P.); (C.P.d.A.); (L.L.B.-R.)
| | | | - Luciana Lasry Benchimol-Reis
- Centro de Recursos Genéticos Vegetais, Instituto Agronômico de Campinas, Av. Barão de Itapura 1481, Campinas 13075-630, Brazil; (I.L.S.); (J.F.C.P.); (C.P.d.A.); (L.L.B.-R.)
| | - Luiz Alberto Colnago
- Embrapa Instrumentação, Rua Quinze de Novembro 1452, São Carlo 13561-160, Brazil;
| | - Antonio Gilberto Ferreira
- Departamento de Química, Universidade Federal de São Carlos, Rodovia Washington Luís, São Carlos 13565-905, Brazil; (M.V.S.); (A.G.F.)
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