Simple spectrophotometric method for determination of melamine in liquid milks based on green Mannich reaction

Chansuvarn, Woravith; Panich, Sirirat; Imyim, Apichat

doi:10.1016/j.saa.2013.04.019

Cited by 15 publications

(12 citation statements)

References 21 publications

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“…Their method was also based on Mannich reaction. They stated that this is a reliable method for measuring melamine in food material samples (Chansuvarn, 2013). Chik et al measured melamine migration from 41 samples of food serving dishes to food simulants.…”

Section: Discussionmentioning

confidence: 99%

Melamine migration measurement through spectrophotometry device and the effect of time and tableware type on it

Haghi

Shakoori

Alimohammadi

et al. 2019

Interdisciplinary Toxicology

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Melamine is an organic-based chemical material widely used in the production of tableware. Given the adverse effects of melamine on human health, melamine tableware can be a source for its introduction into the human body. The aim of this study was to use a simple method for monitoring the rate of melamine migration from the tableware to food and the effect of time and tableware on this migration. To measure the migration, spectrophotometry was used. The limit of detection (LOD) of the method was 0.2 (μg/ml), which is functional for measuring the rate of migration. The investigation of sample migration of melamine tableware revealed that migration has occurred across all samples. The rate of migration in all samples was less than the standard level of the European Union (30 μg/ml). Statistical analysis indicated that time is an important factor in melamine migration, which significantly increased (p<0.05) in 93% of cases with lengthening the contact time from 30 minutes to 90 minutes. The type of tableware (new or old) and production conditions (standard or non-standard) were found to significantly affect (p<0.001) the rate of migration. Statistical analysis of the results suggested that old tableware increased melamine migration in 41% of cases (p<0.05). Non-standard tableware significantly (p<0.001) increased the rate of migration and thus the effect of non-standard production on melamine tableware was more significant than the age of the tableware.

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Section: Discussionmentioning

confidence: 99%

Melamine migration measurement through spectrophotometry device and the effect of time and tableware type on it

Haghi

Shakoori

Alimohammadi

et al. 2019

Interdisciplinary Toxicology

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“…The mean of three replicates for each sample was recorded in Tables 1 and 2 . [1] , [2] , [3] , [4] , [5] , [6] .…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Data on the levels of Melamine- migration from Melamine- ware products and effect of food type and time on it

Haghi¹,

Alimohammadi²,

Asadnejad³

et al. 2018

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Nowadays, Melamine- containers is widely use to because of heat- resistant. Due to the effects of Melamine- on human health, constant and long-term usage of Melamine- containers can be a source of Melamine- exposure to human body. The objective of this research was to measure the levels of Melamine- migration from Melamine- ware-products into foods at different test conditions and Effect of food type and Time on it. Spectrophotometer UV/VIS method was used to detect the limits of Melamine- and the method was based on the in the complex of Melamine- formaldehyde and Uranin (a ketone group).The limit of detection (LOD) of the method was 0.2 (µg/ml) which is functional for measuring. Migration was less than the standard level of European Union (30 µg/ml). In this study, 3% acetic acid, distilled water and 15% ethanol were used as simulants. The results showed the temperature is an important factor in Melamine- migration and in 97% of cases, with increasing temperature from 30 to 90 there is a significant increase (P < 0.05) in Melamine- migration furthermore migration from acidic simulants was more than alcoholic and neutral ones (p < 0.001).

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“…It is also greatly important to ensure the human health and prevent illegal adulteration to protect food safety. Different analytical techniques were reported for the detection of melamine and cyromazine, such as colorimetric, [5] spectrophotometry, [6] spectrofluorimetry, [7] luminescence quenching, [8] chemiluminescence analysis, [9] GC‐MS, [10] LC‐MS [11] and enzyme‐linked immune sorbent assay [12] . However, most of the above technologies have some shortcomings, such as expensive equipment, complicated technology, time consuming, low selectivity, and using large amounts of organic solvents.…”

Section: Introductionmentioning

confidence: 99%

Using a Dopamine‐Modified Magnetic Nano‐flower Material for the Solid Phase Extraction of Cyromazine and Melamine in Food Samples

Feng

Yang

et al. 2021

ChemistrySelect

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This work reported a simple method to prepare MGO@PDA@MoS2 nano‐flower by in situ growth of MoS2 on the poly‐dopamine (PDA) modified Fe3O4@GO (MGO) nanosheets. The novel material was composed of PDA modified MGO nanosheets and flower‐like MoS2 microspheres which two‐dimension ultrathin MoS2 nanosheets were grown in situ on the surface of MGO@PDA and self‐assembled. The material could be used as a new adsorbent for magnetic solid phase extraction (m‐SPE). The nano‐composite was characterized by TG, VSM, SEM, TEM, XRD, XPS and FT‐IR. The extraction parameters were investigated, including initial concentration, extraction time, pH, ionic strength and desorption conditions. The adsorption behaviors of the material were explored via isotherm and kinetic adsorption experiments, which demonstrated that Langmuir adsorption isotherm model and pseudo‐second‐order kinetic model were more appropriate to describe the adsorption process on MGO@PDA@MoS2. A rapid, safe, sensitive, easy, and effective method has been developed for detecting cyromazine and melamine simultaneously in real samples including beef, protein powder and milk by combining with HPLC. Under optimized conditions, the proposed method has a good trueness, wide linear range of 0.1‐100 μg mL−1, low limits of detection (LOD), satisfactory repeatability and reproducibility. Excellent recoveries for the determination of cyromazine and melamine were obtained in spiked real samples. In a word, the nano‐composite material has the advantages of magnetic separation and high adsorption affinity for cyromazine and melamine, and it is a promising adsorbent for extracting cyromazine and melamine from real samples.

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Simple spectrophotometric method for determination of melamine in liquid milks based on green Mannich reaction

Cited by 15 publications

References 21 publications

Melamine migration measurement through spectrophotometry device and the effect of time and tableware type on it

Melamine migration measurement through spectrophotometry device and the effect of time and tableware type on it

Data on the levels of Melamine- migration from Melamine- ware products and effect of food type and time on it

Using a Dopamine‐Modified Magnetic Nano‐flower Material for the Solid Phase Extraction of Cyromazine and Melamine in Food Samples

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