Multivariate optimization of microwave-assisted digestion methods for Cu and Sn determination in antifouling paints using inductively coupled plasma optical emission spectrometry

Silva, Thaiane Nolasco da; Batista, Diego B.; Braz, Bernardo Ferreira; Luna, Aderval S.; Santelli, Ricardo Erthal; Fernandez, Marcos Antônio; Gois, Jefferson Santos de

doi:10.1016/j.talanta.2022.123718

Cited by 8 publications

(3 citation statements)

References 14 publications

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“…Compared with heating by heat conduction and convection of traditional acid digestion, microwave-assisted digestion makes polar molecules (water and protein) vibrate by the action of a high-frequency magnetic field, causing friction between molecules and heating. Therefore, it has the advantages of fast, convenient, safe, and uniform heating [ 17 , 32 ]. Our research has proved again that there was no significant difference in the total amino acid content between the microwave-assisted acid digestion method and the traditional acid digestion method.…”

Section: Resultsmentioning

confidence: 99%

An Optimized Microwave-Assisted Digestion Method to Analyze the Amino Acids Profile of Quisqualis Fructus from Different Planted Origins

Dai,

Yang,

Wang

et al. 2024

Foods

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This study aims to establish a rapid and convenient microwave-assisted digestion method for sample pretreatment to determine amino acid profiles in natural products. This method was applied to analyze the amino acid profiles of Quisqualis Fructus (QF) from different planted origins. The microwave-assisted digestion conditions were optimized by a response surface methodology (RSM), and 17 amino acids in different planted origins of QF were determined by an automatic amino acid analyzer according to the optimized digestion conditions. The contents of 17 amino acids in QF from different planted origins were further analyzed by fingerprint and chemometric analysis. The temperature of microwave digestion at 167 °C, time of microwave digestion at 24 min, and a solid–liquid ratio of 46.5 g/mL was selected as the optimal digestion conditions. The total content of 17 amino acids in QF from different planted origins ranged from 71.88 to 91.03 mg/g. Amino acid composition and nutritional evaluation indicated that the content of medicinal amino acids was higher than aromatic amino acids. The results of fingerprint analysis reflected that the similarity between the 16 batches of QF ranged from 0.889 to 0.999, while chemometrics analysis indicated amino acid content in QF varied from different planted origins, and six important differential amino acids were screened. Compared with the traditional extraction method, microwave-assisted digestion with response surface optimized has the advantages of rapidity, convenience, and reliability, which could be used to study the amino acid profiles in natural products. The amino acid profile of QF indicated that it has a rich medicinal nutritional value. Different planted origins of QF have a high degree of similarity and could be effectively distinguished by chemometric analysis.

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Section: Resultsmentioning

confidence: 99%

An Optimized Microwave-Assisted Digestion Method to Analyze the Amino Acids Profile of Quisqualis Fructus from Different Planted Origins

Dai,

Yang,

Wang

et al. 2024

Foods

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“…Another paint-related publication was presented by da Silva et al who used microwave-assisted acid dissolution methods that had been optimised using central composite design for the determination of Cu and Sn in anti-fouling paints . 65 Sample mass as well as the volumes of hydrochloric, hydrofluoric and nitric acids and hydrogen peroxide required for dissolution were all optimised. Once the optimal conditions had been established, the digests were analysed using ICP-OES.…”

Section: Organic Chemicals and Materialsmentioning

confidence: 99%

Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials

Clough,

Fisher,

Gibson

et al. 2023

J. Anal. At. Spectrom.

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“…Diorganotin(IV) compounds, as a subclass of organometallic compounds, have gained a lot of interest not only due to their immense structural diversity but also due to their potential usage in a variety of domains including organic synthesis, catalysis, anti-fouling coating materials and so forth [ 19 , 20 ]. Diorganotin(IV) compounds have potent antimicrobial, anti-leishmanial, antitumour, cardiovascular, antioxidant, antiherpes, trypanocidal and antituberculosis activities [ 21 – 28 ].…”

Section: Introductionmentioning

confidence: 99%

Development of new tridentate ligands bearing hydrazone motif and their diorganotin(IV) complexes: Synthesis, spectral, antimicrobial and molecular docking studies

et al. 2022

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Current antimicrobial drug discovery and advancement attempts are aimed to identify new complexes that can work effectively against the infections caused by microbes. The aim of present study was to synthesize new diorganotin(IV) complexes of N' -((8-hydroxy-1,2,3,5,6,7-hexahydropyrido[3,2,1-ij]quinolin-9-yl)methylene)-2-nitrobenzohydrazide (H 2 L 1 ), N' -((8-hydroxy-1,2,3,5,6,7-hexahydropyrido[3,2,1-ij]quinolin-9-yl)methylene)-3-methoxybenzohydrazide (H 2 L 2 ) and N' -((8-hydroxy-1,2,3,5,6,7-hexahydropyrido[3,2,1-ij]quinolin-9-yl)methylene)-4-methylbenzohydrazide (H 2 L 3 ) Schiff base ligands with formula R 2 SnL 1−3 (where R = Me, Et, Bu and Ph). Various spectral and physico-analytical techniques such as elemental analysis, FT-IR, multinuclear ( 1 H, 13 C, 119 Sn) NMR, HRMS and XRD were utilized to structurally elucidate the prepared compounds. Based on the spectral data, it was concluded that ligands behave in a tridentate manner and coordinates to the central tin atom through ONO donor atoms. Furthermore, the synthesized compounds were examined for in vitro antimicrobial activity against four bacterial and two fungal strains. Among the examined compounds, Ph 2 SnL 1 complex (MIC = 0.0095 µmol/mL) was found to be the most active. To rationalize the preferred mode of interactions of the most active compound, a molecular docking study of compound Ph 2 SnL 1 was executed in the binding site of 3-oxoacyl-[acyl-carrier-protein] synthase 2 (FabF) of E. coli and sterol 14-alpha demethylase of C. albicans . Compound Ph 2 SnL 1 inhibits the microbes effectively and it could be an effective and new candidate for the modulation of various infections. Graphical Abstract New diorganotin(IV) complexes ( 4–15 ) were prepared from tridentate Schiff base hydrazones ( 1–3 ). The compounds were examined for in vitro antimicrobial activity. Further, molecular docking study of the most potent compound Ph 2 SnL 1 ( 7 ) was performed against the enzyme 3-oxoacyl-[acyl-carrier-protein] synthase 2 (FabF) of E. coli and sterol 14-alpha demethylase of C. albicans . Supplementary Information The online version contains supplementary material avail...

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Multivariate optimization of microwave-assisted digestion methods for Cu and Sn determination in antifouling paints using inductively coupled plasma optical emission spectrometry

Cited by 8 publications

References 14 publications

An Optimized Microwave-Assisted Digestion Method to Analyze the Amino Acids Profile of Quisqualis Fructus from Different Planted Origins

An Optimized Microwave-Assisted Digestion Method to Analyze the Amino Acids Profile of Quisqualis Fructus from Different Planted Origins

Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials

Development of new tridentate ligands bearing hydrazone motif and their diorganotin(IV) complexes: Synthesis, spectral, antimicrobial and molecular docking studies

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