Separation of Cultivars of Soybeans by Chemometric Methods Using Near Infrared Spectroscopy

Panero, João S.; Silva, H. E. B. da; Panero, Pedro S.; Smiderle, O. J.; Panero, Francisco dos Santos; Faria, Fernando Sérgio Escócio Drummond Viana de; Rodriguez, Anselmo Fortunato Ruiz

doi:10.5539/jas.v10n4p351

Cited by 11 publications

(14 citation statements)

References 10 publications

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“…HCA aims to construct a group division, where the variables are joined together hierarchically from the nearest one (which resemble the most) to the farthest and then expressed in a dendrogram or tree [ 28 ].…”

Section: Resultsmentioning

confidence: 99%

Development of Fast Analytical Method for the Detection and Quantification of Honey Adulteration Using Vibrational Spectroscopy and Chemometrics Tools

Elhamdaoui

Orche

Cheikh

et al. 2020

Journal of Analytical Methods in Chemistry

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In this study, the Fourier transform mid-infrared (FT-MIR) spectroscopy technique combined with chemometrics methods was used to monitor adulteration of honey with sugar syrup. Spectral data were recorded from a wavenumber region of 4000–600 cm−1, with a spectral resolution of 4 cm−1. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) were used for qualitative analysis to discriminate between adulterated and nonadulterated honey. For quantitative analysis, we used partial least-squares regression (PLS-R) and the support vector machine (SVM) to develop optimal calibration models. The use of PCA shows that the first two principal components account for 96% of the total variability. PCA and HCA allow classifying the dataset into two groups: adulterated and unadulterated honey. The use of the PLS-R and SVM-R calibration models for the quantification of adulteration shows high-performance capabilities represented by a high value of correlation coefficients R2 greater than 98% and 95% with lower values of root mean square error (RMSE) less than 1.12 and 1.85 using PLS-R and SVM-R, respectively. Our results indicate that FT-MIR spectroscopy combined with chemometrics techniques can be used successfully as a simple, rapid, and nondestructive method for the quantification and discrimination of adulterated honey.

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Section: Resultsmentioning

confidence: 99%

Development of Fast Analytical Method for the Detection and Quantification of Honey Adulteration Using Vibrational Spectroscopy and Chemometrics Tools

Elhamdaoui

Orche

Cheikh

et al. 2020

Journal of Analytical Methods in Chemistry

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“…The near-infrared spectroscopy (NIR) covers the region of the electromagnetic spectrum from 780-2500 nm and is dominated mainly by overtones and combinations of O-H, N-H, C-H vibrations in addition to others C-O, C=O, S-H, C-C, C-Cl (Panero et al, 2017).…”

Section: Near Infrared Spectroscopymentioning

confidence: 99%

Rapid and Green Method Forensic Authentication of Rice Using Near-Infrared Spectroscopy (NIRS)

Panero¹,

Panero²,

Panero³

et al. 2020

JAS

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Rice is one of the most consumed cereals in the world. Currently, techniques for the authentication and geographical origin of rice is known not to be objective because to depend on the naked eye of a well-trained inspector. DNA fingerprint methods have been shown to be inappropriate for on-site application because the method needs a lot of labor and skilled expertise. Rice consumers want to confirm cultivation origin because they believe price or eating score has a high correlation according to them. Considering rice as a raw material of economic and social value and the recent use of NIR spectroscopy coupled with chemometric methods to authentication and discrimination of geographical origin as an alternative to classical methods in the search for a methodology in line with Green Chemistry, this work investigates the potential of NIR spectroscopy combined with multivariate analysis: PCA (Principal Component Analysis) and HCA (Hierarchical Cluster Analysis) for rapid and non-destructive forensic authentication of rice grains from Brazil and Venezuela. This study investigated the potential of near-infrared spectroscopy, combined with PCA and HCA chemometric technique to the authenticity of rice. It was verified that is feasible and advantageous to implement authenticity detection of different brands, typology and geographical discrimination (Brazil and Venezuela) rice.

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“…Para se definir as medidas ideais para o ponto de ônibus foram pesquisadas normas da ABNT e outras referências [26,27,28,29]. A NBR 9283 [26] define paradas de ônibus como mobiliário urbano, na subcategoria de circulação e transporte, incluindo abrigos e pontos de ônibus em suas diversas modalidades.…”

Section: Estudo Do Conceito Do Ponto De ôNibus: Características E Medunclassified

“…Analisando-se o número médio provável de usuários, alunos e funcionários do edifício próximo à potencial instalação, chegou-se à quantidade média aproximada de 15 a 25 pessoas reunidas no ponto de ônibus, a cada 30 minutos. A área para receber tal número de pessoas foi definida com base em informações antropométricas levando em conta o espaçamento lateral necessário [29].…”

Section: Estudo Do Conceito Do Ponto De ôNibus: Características E Medunclassified

Matemática e arquitetura: uso de fractais em mobiliário urbano

et al. 2018

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Com objetivo de potencializar o uso de conhecimentos matemáticos em construções arquitetônicas, essa pesquisa foi desenvolvida por professores e estudantes das áreas de Matemática e Arquitetura, onde se discutiu de que modo diferentes padrões fractais poderiam ser aplicáveis à projetos arquitetônicos para gerar mobiliários urbanos inovadores, bonitos, seguros e práticos. O processo metodológico envolveu pesquisa teórica sobre padrões fractais e de estruturas arquitetônicas e também a exploração analítica e propositiva voltada à realização de projetos arquitetônicos, envolvendo mobiliários urbanos que utilizassem na sua concepção a lógica fractal. Como resultado, se obteve uma proposta de projeto de ponto de ônibus, elaborado a partir de dois padrões fractais específicos, escolhidos dentre diversos pesquisados. Conclui-se que a pesquisa realizada contribuiu significativamente com a construção de conhecimentos interdisciplinares, onde o uso dos padrões fractais possibilitou perceber uma aplicação prática dessa teoria matemática, em projetos de Arquitetura e Urbanismo, bem como favoreceu perceber uma proposição visual inovadora para o projeto de mobiliário urbano proposto.

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Separation of Cultivars of Soybeans by Chemometric Methods Using Near Infrared Spectroscopy

Cited by 11 publications

References 10 publications

Development of Fast Analytical Method for the Detection and Quantification of Honey Adulteration Using Vibrational Spectroscopy and Chemometrics Tools

Development of Fast Analytical Method for the Detection and Quantification of Honey Adulteration Using Vibrational Spectroscopy and Chemometrics Tools

Rapid and Green Method Forensic Authentication of Rice Using Near-Infrared Spectroscopy (NIRS)

Matemática e arquitetura: uso de fractais em mobiliário urbano

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