Recent applications of sample preparation techniques in food analysis

Buldini, Pier Luigi; Ricci, Loretta; Sharma, Jyoti

doi:10.1016/s0021-9673(02)01335-3

Cited by 187 publications

(63 citation statements)

References 176 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[5][6][7] MSPD is also applied, 13,18 which uses similar separation mechanisms to solid phase extraction (SPE). [19][20][21][22] The MSPD-ASE method integrates the relative merits of MSPD and ASE to achieve the selective determination of analytes with correct adsorbent. The fish muscle is disrupted and dispersed thoroughly with the shearing force and hydrophobic-hydrophilic characteristic of adsorbents during MSPD process, whereafter the ASE process, the matrix components are retained by adsorbent while the analytes are extracted by solvent mixture and immediately cleaned up by on-line adsorbent.…”

Section: Mechanisms Of Mspd-asementioning

confidence: 99%

Matrix Solid Phase Dispersion‐Accelerated Solvent Extraction for Determination of OCP Residues in Fish Muscles

Shen

Yuan

Zhang

et al. 2011

J Chinese Chemical Soc

View full text Add to dashboard Cite

A rapid, sensitive and accurate matrix solid phase dispersion-accelerated solvent extraction (MSPD-ASE) method for selective determination of sixteen organochlorine pesticide (OCP) residues in fish samples has been developed and validated. 2 g fresh fish muscle was dispersed with 10 g anhydrous sodium sulfate and 2 g acid alumina thoroughly, and loaded into the stainless-steel extraction cell containing 6 g of acid alumina and 10 g anhydrous sodium sulfate. The temperature 60°C and two extraction cycles of 5 min gave adequate extraction efficiency using DCM-hexane (3:7, v/v) mixture as solvent. Not only the lipids, but also other co-extracts, which peaks mostly located in the forepart of chromatograms and maybe interfere the identification or quantitation of analytes, were eliminated exhaustively, while analytes were extracted selectively. Sixteen OCPs were identified by retention time of standards and quantified using mirex as internal standards. These detected OCPs were confirmed by GC-MS in real samples. The performance of proposed method was evaluated and validated: the detection limits were 0.008-0.05 ng g -1 , relative standard deviations were 1.9-5.0%, and recoveries were 91.0-104.1% spiked at 10 ng g -1 level. The accuracy and precision of proposed method were equal to or better than that of traditional Soxhlet extraction method.

show abstract

Section: Mechanisms Of Mspd-asementioning

confidence: 99%

Matrix Solid Phase Dispersion‐Accelerated Solvent Extraction for Determination of OCP Residues in Fish Muscles

Shen

Yuan

Zhang

et al. 2011

J Chinese Chemical Soc

View full text Add to dashboard Cite

show abstract

“…In addition, there is a question if they provide sufficient sample load capacity and sufficient analyte retention, particularly when dealing with multi-residues representing different chemical classes. The use of disks should increase in the future as they offer not only better performance but also faster extraction speeds [1].…”

Section: Pressurised Liquid Extractionmentioning

confidence: 99%

“…Sample preparation in residue analysis is often not covered well in literature with many review papers focusing on detection systems. However, a number of good general review papers have reported on the topic of sample preparation specifically [1][2][3][4]. Some book chapters provide a more in-depth analysis of the area, but with the rapid progression of sample preparation in recent years, most book chapters are a little outdated at present [5,6].…”

Section: Introductionmentioning

confidence: 99%

Current trends in sample preparation for growth promoter and veterinary drug residue analysis

Kinsella

O’Mahony

Malone

et al. 2009

Journal of Chromatography A

181

View full text Add to dashboard Cite

A comprehensive review is presented on the current trends in sample preparation for isolation of veterinary drugs and growth promotors from foods. The objective of the review is to firstly give an overview of the sample preparation techniques that are applied in field. The review will focus on new techniques and technologies, which improve efficiency and coverage of residues. The underlying theme to the paper is the developments that have been made in multi-residue methods and particularly multi-class methods for residues of licensed animal health products, which have been developed in the last couple of years. The role of multi-class methods is discussed and how they can be accommodated in future residue surveillance.

show abstract

“…Frequently, the sample matrix interferes and analytes eventually present in trace levels may be present in unstable forms. 3 The sample preparation step may involve digestion, pre-concentration and removal of interferents, 4 followed by determination using spectroanalytical methods. [5][6] Analysis of Brazil nuts (Bertholletia excelsa H.B.K., pertaining to the Lecythidaceae family) is not trivial owing to their complex chemical composition, typically containing 50-70% of lipids, 10-20% of proteins and 10-20% of carbohydrates.…”

Section: Introductionmentioning

confidence: 99%

“…Esses resultados indicaram a indisponibilidade de bário presente nesse alimento ao organismo humano. Baseando-se nos teores de bário e enxofre nas diferentes frações e em cálculos estequiométricos para as possíveis reações envolvidas pode-se inferir que bário se encontra principalmente na forma de BaSO 4 . Experimentos termogravimétricos também confirmaram essa suposição.…”

unclassified

Determination and fractionation of barium in Brazil nuts

Gonçalves

Fernandes

Ramos

et al. 2009

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

, respectivamente. Esses resultados indicaram a indisponibilidade de bário presente nesse alimento ao organismo humano. Baseando-se nos teores de bário e enxofre nas diferentes frações e em cálculos estequiométricos para as possíveis reações envolvidas pode-se inferir que bário se encontra principalmente na forma de BaSO 4 . Experimentos termogravimétricos também confirmaram essa suposição.Several sample preparation strategies were employed for determination and fractionation of barium in Brazil nuts using measurements by graphite furnace atomic absorption spectrometry (GF AAS) and inductively coupled plasma optical emission spectrometry with axial view (ICP OES). This food is widely consumed because of its nutritional value and good taste. The chemical analysis of Brazil nuts is not trivial due to their complex matrix. The fractionation of barium in Brazil nuts was studied owing to the toxicity of this element and the strong correlation between chemical form and absorption. Total concentrations of barium varied from 860 to 2084 mg kg -1 . Sequential extractions were performed based on solubility in different media and also according to lipids, proteins and low molecular weight fractions (LMW). The greatest contents of barium were determined in the LMW and in the water insoluble fractions with concentrations in the range 778 to 1606 and 551 to 1520 mg kg -1 , respectively. Based on these results it can be inferred that Ba is not absorbed when Brazil nuts are ingested. Considering both the contents of barium and sulfur in different fractions and stoichiometric calculations it was also possible to assume that barium occurs mainly in the BaSO 4 form. The presence of this chemical form was also confirmed by thermogravimetric measurements.

show abstract

Recent applications of sample preparation techniques in food analysis

Cited by 187 publications

References 176 publications

Matrix Solid Phase Dispersion‐Accelerated Solvent Extraction for Determination of OCP Residues in Fish Muscles

Matrix Solid Phase Dispersion‐Accelerated Solvent Extraction for Determination of OCP Residues in Fish Muscles

Current trends in sample preparation for growth promoter and veterinary drug residue analysis

Determination and fractionation of barium in Brazil nuts

Contact Info

Product

Resources

About