Application of hollow fiber membrane mediated with titanium dioxide nanowire/reduced graphene oxide nanocomposite in preconcentration of clotrimazole and tylosin

Sehati, Negar; Dalali, Nasser; Soltanpour, Shahla; Dorraji, Mir Saeed Seyed

doi:10.1016/j.chroma.2015.09.063

Cited by 16 publications

(5 citation statements)

References 37 publications

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“…The bioactive phenolic compounds were quantified using regression equations from their respective standard curves. The limits of detection (LOD) and limits of quantification (LOQ) were established at signal-to-noise ratios of 3 and 10, respectively [23].…”

Section: High-performance Liquid Chromatography Analysismentioning

confidence: 99%

Ultrasound-assisted extraction of bioactive compounds from Malva sylvestris leaves and its comparison with agitated bed extraction technique

Bimakr

Ganjloo

Zarringhalami

et al. 2017

Food Sci Biotechnol

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The effects of ultrasound-assisted extraction (UAE) variables-namely extraction temperature (40-60 °C), ultrasonic power (50-150 W), and sonication time (40-60 min)-on the extractive value (EV) of bioactive phenolics from leaves were investigated and optimized using Response surface methodology. The effects of extraction solvents (ethanol, ethyl acetate, and-hexane) on EV, free radical scavenging activity (FRSA), total phenolic content (TPC), and major bioactive phenolics were studied using agitated bed extraction (ABE), and the results were compared with the UAE findings. Under the optimal UAE conditions (48 °C, 110.00 W, and 48.77 min) the experimental EV was 279.89 ± 0.21 mg/g with 71.12 ± 0.15% DPPH, 73.35 ± 0.11% ABTS, and a TPC of 152.25 ± 0.14 mg GAE/g. Ethanolic ABE results in higher EV (320.16 ± 0.25 mg g) compared to UAE, while the FRSA and TPC values were reduced. HPLC analysis revealed that the concentration of bioactive phenolics increased significantly ( < 0.05) under the optimal UAE conditions.

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Section: High-performance Liquid Chromatography Analysismentioning

confidence: 99%

Ultrasound-assisted extraction of bioactive compounds from Malva sylvestris leaves and its comparison with agitated bed extraction technique

Bimakr

Ganjloo

Zarringhalami

et al. 2017

Food Sci Biotechnol

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“…The organic solvent was dipped cutinto the hollow fiber to penetrate (impregnate) the organic solvent into the hollow fiber pores. (13,14). After the organic solvent has been trapped in the HF pores by capillary forces and hydrophobic interactions, the plunger of the syringe is squeezed to force the acceptor phase (24 μL) out of the syringe and into the hollow fiber lumen.…”

Section: Preparation Of Hollow Fiber Membranementioning

confidence: 99%

Hollow Fiber Nano Membrane as Liquid Phase Microextraction for Determination of Enrofloxacin in the Prsence of Florfenicol and Tylosin in Chicken Tissues

et al. 2021

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Veterinary medications are a diverse class of medicines with a wide range of chemical and therapeutic qualities. Food items obtained from treated animals may contain residues of the parent chemicals, their metabolites, and/or conjugates due to the usage of veterinary medical treatments in food-producing animals. Enrofloxacin is the most often used fluoroquinolone in poultry disease management and treatment. Because of the limited bioavailability of fluoroquinolones, they are mostly excreted as unaltered molecules in feces and urine, and so discharged into the environment, resulting in significant levels of enrofloxacin residues. For sample preconcentration, a polypropylene hollow fiber membrane with a 200 nm pore size, 600 μm internal diameter, and 200 μm wall thickness was utilized as liquid phase microextraction. Under the optimizations of two variables of divisor concentration and working wavelength Enrofloxacin was determined in concentration ranges of 0.1-25 μg/mL at 270 and 272 nm using successive ratio-derivative technique with a limit of detections 0.024, 0.042 μg/mL, and r 2 equal to 0.9993, 0.9983.The present method was successfully used for the determination of enrofloxacin in the presence of florfenicol and tylosin and it was applied for quantification of enrofloxacin in chicken samples with recovery ranged from 95.33 -99.66%.

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“…Because it is poorly biodegradable, tylosin is a potential contaminant of food of animal origin 5 . The maximum value allowed for tylosin in milk is 50 ppb, 6 which is adopted as the maximum residue limit (MRL) in Brazil by the Ministry of Agriculture, Livestock and Food Supply ( Ministério da Agricultura, Pecuária e Abastecimento – MAPA). When the concentrations of veterinary medicaments exceed the MRL, there may be damage to consumer health 7 …”

Section: Introductionmentioning

confidence: 99%

FTIR spectroscopy with chemometrics for determination of tylosin residues in milk

et al. 2020

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BACKGROUND Contamination of milk by antibiotic residues represents risks to the health of consumers; therefore they should be monitored. The objective of this study was to propose a methodology for the determination of tylosin residues directly in fluid milk based on mid‐infrared spectroscopy associated with chemometrics, using attenuated total reflection Fourier transform infrared (ATR‐FTIR) spectroscopy associated with multilayer perceptron network (MLP) and partial least squares (PLS). RESULTS MLP was shown to be adequate for the discrimination of milk samples contaminated with tylosin below or equal to or above the maximum residue limit (MRL), with an accuracy greater than 99%, using FTIR spectra data. PLS was shown to be appropriate for the prediction of the very low concentrations (0–100 μg L−1) of tylosin residues in milk using FTIR spectra data. PLS models with high correlation coefficients (R > 0.99) were generated. CONCLUSION FTIR with chemometrics proved to be a non‐destructive, efficient and low‐cost method for the investigation and quantification of tylosin residues directly in fluid milk. © 2020 Society of Chemical Industry

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Application of hollow fiber membrane mediated with titanium dioxide nanowire/reduced graphene oxide nanocomposite in preconcentration of clotrimazole and tylosin

Cited by 16 publications

References 37 publications

Ultrasound-assisted extraction of bioactive compounds from Malva sylvestris leaves and its comparison with agitated bed extraction technique

Ultrasound-assisted extraction of bioactive compounds from Malva sylvestris leaves and its comparison with agitated bed extraction technique

Hollow Fiber Nano Membrane as Liquid Phase Microextraction for Determination of Enrofloxacin in the Prsence of Florfenicol and Tylosin in Chicken Tissues

FTIR spectroscopy with chemometrics for determination of tylosin residues in milk

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