Determination of tocopherols and sitosterols in seeds and nuts by QuEChERS-liquid chromatography

Delgado-Zamarreño, M.M.; Fernández-Prieto, Cristina; Bustamante-Rangel, Myriam; Pérez‐Martín, Lara

doi:10.1016/j.foodchem.2015.07.083

Cited by 50 publications

(25 citation statements)

References 35 publications

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“…The main methods developed for the determination of these compounds and several residue analyses of neonicotinoids are based on HPLC–MS (Di Muccio et al, ; Faraji, Noorbakhsh, Shafieyan, & Ramezani, ; Jabot et al, ) and HPLC–diode‐array detection (Delgado‐Zamarreño, Fernández‐Prieto, Bustamante‐Rangel, & Pérez‐Martín, ; Falqui‐Cao, Wang, Urruty, Pommier, & Montury, ; Singh, Foster, & Khan, ) techniques. In this regard, Faraji et al .…”

Section: Introductionmentioning

confidence: 99%

“…The main methods developed for the determination of these compounds and several residue analyses of neonicotinoids are based on HPLC-MS (Di Muccio et al, 2006;Faraji, Noorbakhsh, Shafieyan, & Ramezani, 2018;Jabot et al, 2015) and HPLC-diode-array detection (Delgado-Zamarreño, Fernández-Prieto, Bustamante-Rangel, & Pérez-Martín, 2016;Falqui-Cao, Wang, Urruty, Pommier, & Montury, 2001;Singh, Foster, & Khan, 2004) techniques. In this regard, Faraji et al (2018) introduced a new methodology for extraction of these compounds based on a modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) approach with the detection of compounds accomplished using an MS method.…”

Section: Introductionmentioning

confidence: 99%

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Health risk assessment of neonicotinoid insecticide residues in pistachio using a QuEChERS‐based method in combination with HPLC‐UV

Mahdavi

Garshasbi

Farimani

et al. 2020

Biomedical Chromatography

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There is an increasing need to address the potential risks arising from combined exposures to multiple residues from pesticides in the diet. Pesticide residue‐related pollution is a problem that arises because of the increased use of pesticides in agriculture to meet the growing demands of food production. In this study, pesticide residue data were obtained based on an optimized extraction method. For this purpose, we established a method based on quick, easy, cheap, effective, rugged, and safe (QuEChERS) extraction for simultaneous determination of imidacloprid (IMI) and acetamiprid (ACT) in pistachio nuts. The parameters influencing the QuEChERS method were the sample‐to‐water ratio and adsorbent amounts. As a result, both were optimized to improve the recovery of the analytes as well as the clean‐up efficiency of the pistachio matrix. Our results indicated that a freeze‐out step and use of primary and secondary amines as an adsorbent led to much cleaner chromatograms with lower baseline drift, without using graphitized carbon black and C18‐based adsorbent, which reduced both cost and time of analysis. Following extraction, the pesticide residues were separated and quantified by reverse‐phase HPLC. For validation purposes, recovery studies were carried out using a concentration range from 20 to 2500 μg/L at nine levels. The suitable linearity, precision, and accuracy were obtained with HPLC–UV with recoveries of 70.37%–89.80% for IMI and 81.05%–113.57% for ACT, with relative standard deviations <12%. The validated method was successfully applied to the analysis of pistachio samples collected from a field trial to estimate maximum residue limits. There was no significant health risk for consumers via pistachio consumption.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Health risk assessment of neonicotinoid insecticide residues in pistachio using a QuEChERS‐based method in combination with HPLC‐UV

Mahdavi

Garshasbi

Farimani

et al. 2020

Biomedical Chromatography

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“…The QuEChERS method remains extensively used for this purpose since modifications can be introduced according to the characteristics of the analyte / matrix to be analyzed, i.e., addition of acetate or citrate in the extraction / partitioning step and the use of alternative sorbents such as octadecylsilane (C18) and graphitized carbon black (GCB) in the dispersive solid phase extraction (d-SPE) clean-up step. Furthermore, the QuEChERS extraction method has been shown to be effective for the analysis of other groups of compounds, including mycotoxins, 35 tocopherols, and sitosterols 36 in pomegranate, seed, and nuts, respectively. However, for the analysis of phenolic compounds in fruits and vegetables, the QuEChERS extraction method has not been widely applied.…”

Section: Introductionmentioning

confidence: 99%

Determination of Phenolic Compounds in Red Sweet Pepper (Capsicum annuum L.) using a Modified QuEChERS Method and UHPLC-MS/MS Analysis and Its Relation to Antioxidant Activity

Rodrigues

Nicácio

Jardim

et al. 2019

J. Braz. Chem. Soc.

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In the present work, a fast, easy and efficient analytical method was developed and validated for the determination of phenolic compounds (4-hydroxybenzoic, vanillic, caffeic, p-coumaric, sinapic, ferulic and ellagic acids, and naringenin) in red sweet pepper. Extraction of phenolic compounds was carried out using the quick, easy, cheap, effective, rugged and safe (QuEChERS) method, followed by separation and detection using ultra-high performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS). When the acetate version of the QuEChERS method was used, higher amounts of the phenolic compounds were extracted. In the dispersive solid phase extraction (d-SPE) clean-up step, combination of 50 mg of octadecylsilane (C18) and 7.5 mg of graphitized carbon black (GCB), resulted in the greatest removal of interferents, especially carotenoids, without significant retention of phenolic compounds. The recoveries for the proposed method were 82-103%, the limits of quantification were 2-150 μg kg-1 , and the precision values expressed in terms of relative standard deviation (RSD) were ≤ 15%. The method developed was successfully applied to the analysis of different red sweet pepper cultivars.

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“…The use of clean-up becomes an important tool to prolong the equipment useful life, besides reduce the matrix effects when complex matrices, such as wine, are injected. 18 In the last years, dispersive solid phase extraction (d-SPE) have been successfully used as clean-up technique in a large variety of matrices and analytes [19][20][21][22][23] including wine samples. [24][25][26] Besides, performing the extract dilution prior injection into ultrahigh performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS) system has proven to be a non-expensive alternative to reduce matrix effect and increase sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Fast Sample Preparation Method Using Ultra-High Performance Liquid Chromatography Coupled to Tandem Mass Spectrometry for Natamycin Determination in Wine Samples

Bernardi¹,

Rizzetti²,

Adaime³

et al. 2016

J. Braz. Chem. Soc.

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An easy and efficient sample preparation method was developed for the determination of natamycin residues in wine samples by solvent extraction and ultra-high performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS) analysis. After choosing acetonitrile as extraction solvent, an experimental design was carried out with different amounts of C18 and primary secondary amine (PSA) sorbents in order to optimize the clean-up step. Validation results were satisfactory, with recoveries from 77 to 95% and relative standard deviation (RSD) lower than 10% for the spike levels 5, 10 and 20 µg L , respectively. The validated method proved to be an excellent analytical tool, with a total analysis time of 3 min. The method was applied in 10 Brazilian wine samples and no residues of natamycin were detected. Keywords: natamycin, wine, sample preparation, UHPLC-MS/MS IntroductionThe use of preservatives in food and beverages is necessary to prevent or retard microbial growth avoiding undesirable alterations in the final product quality. Among the antimicrobial substances employed by the food industry, natamycin has been proven an effective alternative for controlling microbial growth.1 Natamycin or pimaricin is an antibiotic belonging to the group of polyene macrolides produced by actinomycetes Streptomyces natalensis. 2,3 Several studies reported the use of natamycin for the surface treatment of cheeses and dry sausages [4][5][6] and most recently, in antimicrobial packaging systems. 7 Natamycin cannot be added to wines because it is classified as a non-permitted additive by the Code of Enological Practices of the International Organization of Vine and Wine (OIV). ) where it is used as an alternative to sulfur dioxide during bottling, preventing refermentation in sweet and low acidity wines. 9 However, export wines must comply with EU standards and currently a level of 5 µg L -1 is enforced in countries as Germany. 10 Recently, the European disease control authorities detected natamycin in wine samples from different producing countries and banned their sale and distribution. 11,12 Besides addition to the wine, many wineries use natamycin on the walls and floors to eliminate the yeast and mold in the environment. Under these conditions, natamycin can be transferred into the wine being a contamination source.In Brazil, the Brazilian Health Regulatory Agency (ANVISA) did not authorize the use of natamycin in wines, only on cheese surface with a maximum limit of 2 mg per 100 cm 2 and meat surface of embedded products with a maximum limit of 1 mg per dm 2 . 13 However, even the use of this not authorized compound, in the last years several wine samples were confiscated from Brazilian wineries due to the use of natamycin.14 Generally, the analytical methods for natamycin determination in food and beverages samples use organic solvents for extraction followed by filtration and determination by liquid chromatography. Roberts et al. 15 developed a rapid procedure based on liquid chromatography coupled to hig...

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Determination of tocopherols and sitosterols in seeds and nuts by QuEChERS-liquid chromatography

Cited by 50 publications

References 35 publications

Health risk assessment of neonicotinoid insecticide residues in pistachio using a QuEChERS‐based method in combination with HPLC‐UV

Health risk assessment of neonicotinoid insecticide residues in pistachio using a QuEChERS‐based method in combination with HPLC‐UV

Determination of Phenolic Compounds in Red Sweet Pepper (Capsicum annuum L.) using a Modified QuEChERS Method and UHPLC-MS/MS Analysis and Its Relation to Antioxidant Activity

Fast Sample Preparation Method Using Ultra-High Performance Liquid Chromatography Coupled to Tandem Mass Spectrometry for Natamycin Determination in Wine Samples

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