Buscar
Mostrando ítems 31-40 de 403
Detection of durum wheat pasta adulteration with common wheat by infrared spectroscopy and chemometrics: A case study
(Elsevier Science, 2020-04-09)
Fourier transform (FT) infrared spectroscopy, in combination with Partial-Least Squares Discriminant Analysis (PLS-DA) and Linear Discriminant Analysis (LDA), was used to discriminate commercial durum wheat pasta from Italy ...
A simple design for the validation of a FT-NIR screening method: Application to the detection of durum wheat pasta adulteration
(Elsevier, 2020-12-15)
The demand for the development of fast, easy-to-use and low-cost analytical methods for food adulteration analysis has being increasing in the last years. Although infrared spectroscopic techniques offer these advantages, ...
UV-Visible Spectroscopy and Multivariate Classification as a Screening Tool to Identify Adulteration of Culinary Spices with Sudan I and Blends of Sudan I + IV Dyes
(Springer, 2013-09)
This work propose a feasible, rapid, and simple method for detecting culinary spices adulterated either with Sudan I dye or blends of Sudan I + IV dyes at three concentration levels. The method is based on the use of ...
Determinação de fármacos sintéticos em formulações farmacêuticas empregando métodos eletroquímicos e de separação
(Universidade Federal de Santa MariaBRQuímicaUFSMPrograma de Pós-Graduação em Química, 2014-03-14)
The adulteration of natural pharmaceutical formulations using synthetic drugs has increased in the last years.Adulterations have been reported in the literature, which proves the increasing concern regarding this issue, ...
Use of stable isotopes of carbon to detect coconut water adulteration
(Univ Sao Paolo, 2019-05-01)
Industrialized coconut water may have been adulterated by adding sugar above the limit permitted by law. According to Brazilian law, industrialized coconut water can receive the maximum addition of 1 g of sugar per 100 mL ...
Bioactive paper platform for detection of hydrogen peroxide in milk
(2020-02-15)
This paper describes the development and application of a paper-based analytical device (μPAD) for the determination of hydrogen peroxide, an important adulterant in milk. The method employs the reaction between hydrogen ...
Determinación de la genuinidad de la grasa láctea bovina a través de la interpretación estadística de análisis por cromatografía gaseosa
(2009-04-06)
Con el objetivo de detectar adulteraciones de la grasa láctea se planteó el cálculo de relaciones de concentración de dos o más ácidos grasos y la aplicación de herramientas estadísticas multivariadas. Se determinó por ...
Aplicação de imagens digitais e técnicas espectroanalíticas combinadas com quimiometria para detecção e quantificação de adulteração em leite bovino
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Química - PPGQ, 2013-02-22)
Milk provides essential nutrients (carbohydrate, fat, protein, minerals and vitamins) of great nutritional relevance for humans, particularly during childhood. Nowadays, the occurrence of milk adulteration is a major issue ...
Identification of gasoline adulteration using comprehensive two-dimensional gas chromatography combined to multivariate data processing
(Elsevier Science BvAmsterdamHolanda, 2008)
Utilização do monitoramento seletivo de íons como ferramenta para a detecção de adulterações em óleos de copaíbaSelective ion monitoring as a tool for detecting adulterated copaiba oil
(Fundação Oswaldo Cruz. Instituto de Tecnologia em Fármacos. Centro de Inovação em Biodiversidade e Saúde, 2017)