Molecularly imprinted polymer as sorbent in micro-solid phase extraction of ochratoxin A in coffee, grape juice and urine

Lee, Tien Ping; Saad, Bahruddin; Khayoon, Wejdan Shakir; Salleh, Baharuddin

doi:10.1016/j.talanta.2011.10.021

Cited by 91 publications

(42 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In agreement with the LOD and LOQ reported by Lee et al . on MIP clean-up on coffee [51], we obtained 0.08 and 0.29 µg/kg, respectively In light of the results obtained by Tozlovanu et al . [36], we could explain recoveries obtained with IAC clean-up.…”

Section: Resultssupporting

confidence: 61%

“…Most studies focused on IAC as clean-up procedure [37,57], while only two studies used Mycosep™ [58] and MIP cartridges [51]. Based on the results obtained by recovery rate values, LOD, and LOQ, MIP columns resulted to be the best clean-up method able to purify the coffee matrix and reduce the matrix interference (Table 3).…”

Section: Resultsmentioning

confidence: 99%

“…Recent MIP columns, exhibiting several advantages, such as reusability, thermal stability, compatibility with all solvents, and longer shelf life, can be considered as an alternative to IAC. In fact many papers reported validation performances using MIP columns on different matrices, such as coffee [51], with recoveries from 90.6% to 99.4% for 1 to 50 µg/kg spiked levels; and recoveries > 92.1% on spiked cereals at 60 µg/kg [52]. Compared to the considerable use of IAC, Mycosep™ cartridges, despite the ease and speed of clean-up procedures, are less used.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparison of Clean-Up Methods for Ochratoxin A on Wine, Beer, Roasted Coffee and Chili Commercialized in Italy

Prelle

Spadaro

Denca

et al. 2013

Toxins

View full text Add to dashboard Cite

The most common technique used to detect ochratoxin A (OTA) in food matrices is based on extraction, clean-up, and chromatography detection. Different clean-up cartridges, such as immunoaffinity columns (IAC), molecular imprinting polymers (MIP), Mycosep™ 229, Mycospin™, and Oasis® HLB (Hydrophilic Lipophilic balance) as solid phase extraction were tested to optimize the purification for red wine, beer, roasted coffee and chili. Recovery, reproducibility, reproducibility, limit of detection (LOD) and limit of quantification (LOQ) were calculated for each clean-up method. IAC demonstrated to be suitable for OTA analysis in wine and beer with recovery rate >90%, as well as Mycosep™ for wine and chili. On the contrary, MIP columns were the most appropriate to clean up coffee. A total of 120 samples (30 wines, 30 beers, 30 roasted coffee, 30 chili) marketed in Italy were analyzed, by applying the developed clean-up methods. Twenty-seven out of 120 samples analyzed (22.7%: two wines, five beers, eight coffees, and 12 chili) resulted positive to OTA. A higher incidence of OTA was found in chili (40.0%) more than wine (6.6%), beers (16.6%) and coffee (26.6%). Moreover, OTA concentration in chili was the highest detected, reaching 47.8 µg/kg. Furthermore, three samples (2.5%), two wines and one chili, exceeded the European threshold.

show abstract

Section: Resultssupporting

confidence: 61%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of Clean-Up Methods for Ochratoxin A on Wine, Beer, Roasted Coffee and Chili Commercialized in Italy

Prelle

Spadaro

Denca

et al. 2013

Toxins

View full text Add to dashboard Cite

show abstract

“…In these cases, the OTA exposure through consumption of juice has not represented a health risk, since the estimated exposure to this toxin were lower than the value established as PTWI by JECFA (ZIMMERLI & DICK, 1996;ROSA et al, 2004;BELLI et al, 2004;SHUNDO et al, 2006;LEE et al, 2012;CAO et al, 2013).…”

Section: Introductionmentioning

confidence: 95%

Occurrence of ochratoxin A in grapes, juices and wines and risk assessment related to this mycotoxin exposure

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Lee et al [90] used commercial MIPs and polypropylene flat sheet membrane to make a MIP micro-SPE (MI-µSPE) device. Under optimal conditions of the MI-µSPE-HPLC-fluorescence detector (FLD) method, ochratoxin A was selectively extracted and determined in roasted coffee samples.…”

Section: Off-line Molecularly-imprinted Solid-phase Extractionmentioning

confidence: 99%

Recent advances in solid-phase sorbents for sample preparation prior to chromatographic analysis

Wen

Chen

et al. 2014

TrAC Trends in Analytical Chemistry

342

123

View full text Add to dashboard Cite

A B S T R A C TSample preparation is a crucial bottleneck in the whole analytical process. Solid-phase sorbents (SPSs) have aroused increasing interest in research on sample preparation, as they have key roles in obtaining high clean-up and enrichment efficiency in the analysis of trace targets present in complex matrices. The objective of this review is to provide a broad overview of the recent advances and applications of SPSs in sample preparation prior to chromatographic analysis, during the period 2008-13. We include SPSs, such as molecularly-imprinted polymers, carbon nanomaterials, metallic nanoparticles and metal organic frameworks, focusing on solid-phase extraction, solid-phase microextraction, matrix solid-phase dispersion and stir-bar sorptive extraction of typical pollutants in environmental, biological, food and pharmaceutical samples. We propose remaining challenges and future perspectives to improve development of new SPSs and to apply them further.

show abstract

Molecularly imprinted polymer as sorbent in micro-solid phase extraction of ochratoxin A in coffee, grape juice and urine

Cited by 91 publications

References 31 publications

Comparison of Clean-Up Methods for Ochratoxin A on Wine, Beer, Roasted Coffee and Chili Commercialized in Italy

Comparison of Clean-Up Methods for Ochratoxin A on Wine, Beer, Roasted Coffee and Chili Commercialized in Italy

Occurrence of ochratoxin A in grapes, juices and wines and risk assessment related to this mycotoxin exposure

Recent advances in solid-phase sorbents for sample preparation prior to chromatographic analysis

Contact Info

Product

Resources

About