Quantification of adulterations in extra virgin flaxseed oil using MIR and PLS

Souza, Letícia Maria de; Santana, Felipe Bachion de; Gontijo, Lucas Caixeta; Mazivila, Sarmento J.; Neto, Waldomiro Borges

doi:10.1016/j.foodchem.2015.02.081

Cited by 36 publications

(21 citation statements)

References 30 publications

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“…Spectroscopic techniques are very promising tools to detect and/or quantify adulteration in food because they are rapid, nondestructive, effective, reliable, and do not use chemical reagents (Kamal & Karoui, ). The NIRS methodology was successfully applied to identify food fraud and adulteration in the following food production chains: milk and dairy products (Carvalho et al., ; Gondim, Junqueira, Souza, Ruisánchez, & Callao, ; Kamal & Karoui, ; Rodrigues et al., ), honey and botanical origin studies (Siddiqui, Musharraf, Choudhary, & Rahman, ), coffee (Reis, Franca, & Oliveira, ), bovine meat (Nunes et al., ), and extra virgin flaxseed oil (Souza, Santana, Gontijo, Mazivila, & Borges, ). Infrared spectroscopy combined with chemometrics has been used as a powerful tool for determining adulterants in milk, contributing to product quality assurance and serving as a method for cross‐checking results (Nascimento, Santos, Pereira‐Filho, & Rocha, ).…”

Section: Discussionmentioning

confidence: 99%

Economically Motivated Food Fraud and Adulteration in Brazil: Incidents and Alternatives to Minimize Occurrence

Tibola

Silva

Dossa

et al. 2018

Journal of Food Science

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Section: Discussionmentioning

confidence: 99%

Economically Motivated Food Fraud and Adulteration in Brazil: Incidents and Alternatives to Minimize Occurrence

Tibola

Silva

Dossa

et al. 2018

Journal of Food Science

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“…MIR (400–4000 cm −1 ) contains fundamental frequency of CO, CH, CN and so on which is the strongest absorption in infrared spectrum, so it lays a foundation for qualitative and quantitative analysis. As one of the most common spectroscopic techniques, MIR has been applied in many fields, including agriculture, the petrochemical industry and pharmacy . Quantitative analysis based on chemometrics aims to correlate the spectra to the concentration matrix by developing an appropriate model.…”

Section: Introductionmentioning

confidence: 99%

Spectral interval optimization on rapid determination of prohibited addition in pesticide by ATR‐FTIR

Huang

Song

et al. 2019

Pest Management Science

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BACKGROUND Acetamiprid, as a low‐toxicity pesticide, has already been extensively used to increase plant production and quality. Although fipronil has been prohibited, it is usually illicitly added to acetamiprid due to its particular insecticidal action and effect, so it is highly desirable to obtain a rapid and effective method to detect its concentration. Mid‐infrared spectroscopy (MIR) combined with two variable selection methods, interval combination optimization (ICO) and interval partial least squares (iPLS), were used to determinate the prohibited addition of fipronil. RESULTS The full spectra for both ICO and iPLS were divided into 40 equal‐width intervals. Consequently, 45 and 135 characteristic variables were extracted from ICO and iPLS to establish the models. Compared with iPLS, the ICO model acquired a more suitable spectral region and as a result gained a higher prediction accuracy. Specifically, the ICO method selected the characteristic wavelengths ascribed to CF and CN (in five‐membered heterocyclics), iPLS chose the intervals associated with CF and SO. CONCLUSION Results revealed that MIR combined with ICO could be efficiently used for rapid identification of illegal addition and had great potential to provide on‐site pesticide quality control. © 2018 Society of Chemical Industry

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“…Partial least squares (PLS), a very practical regression algorithm, is often used for establishing a quantitation model. [23][24][25][26][27] Among chiral reagents used in chiral medium, cyclodextrins (CDs) are usually adopted but the price of CDs is expensive. Another most common chiral auxiliary is sucrose, which has been demonstrated to stereoselectively bind to chiral molecules to form complex and changeable conformations as well as produce diastereomeric interactions.…”

Section: Introductionmentioning

confidence: 99%

A useful quantitative model for determination of enantiomeric composition of racemate praziquantel by ultraviolet spectroscopy combined with partial least squares and its application to praziquantel tablets

Zhao

Meng

et al. 2018

J. Innov. Opt. Health Sci.

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A simple and novel method has been proposed to determine the enantiomeric composition of racemate praziquantel (PZQ) by using the analysis of ultraviolet (UV) spectroscopy combined with partial least squares (PLS). This method does not rely on the use of expensive carbohydrates such as cyclodextrins, but on the use of inexpensive sucrose, which is equally effective as carbohydrate. PZQ has two enantiomers. Through measuring the slight difference in the UV spectral absorption of PZQ due to different interactions between its two enantiomers and sucrose, the enantiomeric composition was determined by a quantitative model based on PLS analysis. The model showed that the correlation coefficients of calibration set and validation set were 0.9971 and 0.9972, respectively. The root mean square error of calibration (RMSEC) and the root mean square error of prediction (RMSEP) were 0.0167 and 0.0129, respectively. Then, the independent data of PZQ tablets were also used to test how well the quantitative model of PLS predicted the enantiomeric composition. The ratio of S-PZQ in tablet was 0.492, determined by high-performance liquid chromatography as the reference value. Six solutions of the tablet samples were prepared, and the ratios of S-PZQ in tablet samples in the validation set were predicted by the PLS model. Their relative errors with the reference value were not more than 4%. Therefore, the established model could be accurate and employed to predict the enantiomeric compositions of PZQ tablets.

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Quantification of adulterations in extra virgin flaxseed oil using MIR and PLS

Cited by 36 publications

References 30 publications

Economically Motivated Food Fraud and Adulteration in Brazil: Incidents and Alternatives to Minimize Occurrence

Economically Motivated Food Fraud and Adulteration in Brazil: Incidents and Alternatives to Minimize Occurrence

Spectral interval optimization on rapid determination of prohibited addition in pesticide by ATR‐FTIR

A useful quantitative model for determination of enantiomeric composition of racemate praziquantel by ultraviolet spectroscopy combined with partial least squares and its application to praziquantel tablets

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