Determination of triazine herbicides in seaweeds: Development of a sample preparation method based on Matrix Solid Phase Dispersion and Solid Phase Extraction Clean-up

Rodríguez-González, N.; González-Castro, María-José; Beceiro-González, E.; Muniategui-Lorenzo, Soledad; Prada‐Rodríguez, D.

doi:10.1016/j.talanta.2013.12.063

Cited by 45 publications

(19 citation statements)

References 27 publications

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“…Seaweeds belong to the lower cryptogams and are mainly composed of green algae, red algae, and brown algae; they are rich in protein, a variety of vitamins, minerals, and fibers, and have been widely used in the food and pharmaceutical industries [1,2,3]. Nowadays, polysaccharides from seaweed are becoming more and more important in biochemical and medical areas [4,5].…”

Section: Introductionmentioning

confidence: 99%

Extraction, Structural Characterization, and Potential Antioxidant Activity of the Polysaccharides from Four Seaweeds

Chen

et al. 2016

IJMS

114

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Four seaweed polysaccharides were extracted from Sarcodia ceylonensis, Ulva lactuca L., Gracilaria lemaneiformis, and Durvillaea antarctica, respectively, by microwave-assisted extraction. The effect of three significant variables (extraction time, extraction temperature, and the ratio of water to raw material) on the process for extracting polysaccharides was investigated, along with the optimization of the extraction using the response surface method (RSM) with a Box–Behnken design. The polysaccharide structure, monosaccharide composition, degree of sulfation, and molecular weight (MW) distribution were analyzed by infrared (IR) spectrometry, gas chromatography (GC), and high-performance gel permeation chromatography (HPGPC). IR spectrometry showed that Sarcodia ceylonensis polysaccharide (SCP), Ulva lactuca L. polysaccharide (ULLP), and Durvillaea antarctica polysaccharide (DAP) were all sulfated polysaccharides and, except Gracilaria lemaneiformis polysaccharide (GLP), all belong to β-pyranosidic polysaccharides. The average molecular weight (MW) of SCP, ULLP, GLP, and DAP was 466, 404, 591, and 482 kDa, respectively. The quantitative and comparative results with external standards indicated that the main monosaccharide in SCP and ULLP was mannose; and GLP and DAP were mainly composed of galactose and glucose, respectively. Then the in vitro antioxidant activity of all of the polysaccharides was evaluated using different assays—2,2–azino –bis (3-ethylbenzthiazoline-6- sulfonate) (ABTS), hydroxyl radical, nitrite scavenging capacity, and reducing power—and the relationship between their antioxidant activity and chemical characteristics were also examined. ULLP presented the highest ABTS radical scavenging activity; ULLP, SCP and DAP also showed a strong effect on the ABTS radical scavenging activity. SCP and ULLP exhibited excellent hydroxyl radical scavenging activities, about 83.33% ± 2.31% and 80.07% ± 2.17%, respectively, at 4 mg/mL. The reducing power of DAP was relatively more pronounced than that of the three other polysaccharides. However, the nitrite scavenging activities of the four seaweed polysaccharides were weaker than other antioxidant activity (ABTS), hydroxyl radical scavenging capacity, and reducing power. In addition, GLP exhibited lower activities than the other three samples in all of the tests for the antioxidant activity.

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Section: Introductionmentioning

confidence: 99%

Extraction, Structural Characterization, and Potential Antioxidant Activity of the Polysaccharides from Four Seaweeds

Chen

et al. 2016

IJMS

114

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“…For the extraction of triazine residues [55], seaweed samples were blended with C8 and cleaned up using a dual layer (separated by a frit) of ENVI-CarbII/PSA as co-sorbent. ENVI-Carb has strong affinity towards planar molecules, whereas PSA can retain fatty acids, organic acids, sugars and some polar pigments.…”

Section: Environmental Contaminantsmentioning

confidence: 99%

Recent advances and developments in matrix solid-phase dispersion

Capriotti

Cavaliere

Foglia

et al. 2015

TrAC Trends in Analytical Chemistry

107

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“…For this purpose, florisil (1.5 g) as dispersant was assayed with Envi-Carb (1 g) and C 18 (1 g) as co-sorbents. Based on our experience, elution of the cartridges was performed with 20 mL of ethyl acetate and 5 mL of acetonitrile after rinsing with 10 mL of hexane (Rodríguez-González et al, 2014). The extracts obtained using C 18 were very dark, indicating coelution of matrix interferences and were not analysed.…”

Section: Mspd Optimisationmentioning

confidence: 99%

“…The key factors for the success of MSPD are its feasibility, flexibility, versatility, high throughput, low cost and rapidity. MSPD methods have been developed for the extraction of triazine residues from different plants and plant materials (Ramos et al, 2009;Rodríguez-González, González-Castro, Beceiro-González, MuniateguiLorenzo, & Prada-Rodríguez, 2014;Wen et al, 2012); however references for the determination of triazines in animal tissues by MSPD are scarce. As far as we know, there are only two references in the literature devoted to the determination of triazines in fish by MSPD and furthermore few triazines are included in these studies (Gaunt & Barker, 2000;Souza-Caldas et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Development of a Matrix Solid Phase Dispersion methodology for the determination of triazine herbicides in mussels

et al. 2015

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Determination of triazine herbicides in seaweeds: Development of a sample preparation method based on Matrix Solid Phase Dispersion and Solid Phase Extraction Clean-up

Cited by 45 publications

References 27 publications

Extraction, Structural Characterization, and Potential Antioxidant Activity of the Polysaccharides from Four Seaweeds

Extraction, Structural Characterization, and Potential Antioxidant Activity of the Polysaccharides from Four Seaweeds

Recent advances and developments in matrix solid-phase dispersion

Development of a Matrix Solid Phase Dispersion methodology for the determination of triazine herbicides in mussels

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