Fabrication of novel electrochemical sensor for determination of vitamin C in the presence of vitamin B9 in food and pharmaceutical samples

Khaleghi, Fatemeh; Arab, Zahra; Gupta, Vinod Kumar; Norouzi, Parviz; Atar, Necip; Yola, Mehmet Lütfi

doi:10.1016/j.molliq.2016.06.061

Cited by 29 publications

(7 citation statements)

References 38 publications

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“…The D was calculated as 7.634 × 10 −4 cm 2 ·s −1 , which was larger than in previous reports [ 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 ].…”

Section: Resultsmentioning

confidence: 62%

Rapid Detection of Ascorbic Acid Based on a Dual-Electrode Sensor System Using a Powder Microelectrode Embedded with Carboxyl Multi-Walled Carbon Nanotubes

Zhang

2017

Sensors

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In this paper, carboxyl groups were introduced by liquid oxidation methods onto multi-walled carbon nanotubes (MWCNTs) to improve the MWCNTs’ electrocatalytic properties. A platinum wire microelectrode (ME) was corroded using aqua regia and subsequently embedded with MWCNTs to achieve more active sites, producing a so-called powder microelectrode (PME). Compared with conventional MEs, the PME has a larger specific surface area and more active sites. When PME was used to detect ascorbic acid (AA), the AA oxidation potential shifted negatively and current peak was visibly increased. The calibration curve obtained for AA was in a range of 5.00 × 10−6~9.50 × 10−4 mol·L−1: Ipa(μA) = 3.259 × 10−2 + 1.801 × 102 C (mol·L−1) under the optimum testing conditions. Moreover, the detection and quantitation limits were confirmed at 4.89 × 10−7 mol·L−1 and 1.63 × 10−7 mol·L−1, respectively. When the fabricated PME was practically applied to detect AA, it was shown a recovery rate of 94~107% with relative standard deviation (RSD) <5%. The proposed strategy thus offers a promising, rapid, selective and low-cost approach to effective analysis of AA.

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“…The D was calculated as 7.634 × 10 −4 cm 2 ·s −1 , which was larger than in previous reports [ 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 ].…”

Section: Resultsmentioning

confidence: 62%

Rapid Detection of Ascorbic Acid Based on a Dual-Electrode Sensor System Using a Powder Microelectrode Embedded with Carboxyl Multi-Walled Carbon Nanotubes

Zhang

2017

Sensors

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“…Semakin tinggi suhu penyimpanan maka laju reaksi berbagai senyawa akan semakin cepat. Safaryani et al (2007) menyatakan bahwa beberapa faktor seperti kontak udara, sinar, panas, enzim oksidator, alkali, besi (Fe), dan katalis tembaga (Cu) dapat mempercepat oksidasi vitamin C. Akan tetapi, oksidasi vitamin C dapat terhambat dengan penyimpanan suhu rendah atau keadaan sangat asam (Rahmawati dan Bundjali, 2012;Khaleghi et al, 2016; Lena Herbig dan Renard, 2017; Tomas dan Jafari, 2018).…”

Section: Perubahan Kadar Vitamin Cunclassified

Analisis Kualitas Sirup Jeruk Baby Java Pada Stasiun Proses Dan Pendugaan Umur Simpan Skala Pilot Plant

Anggarapuri

Wijana

Pranowo

2018

JTP

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Buah jeruk merupakan salah satu buah yang berpotensi tinggi di Indonesia dengan hasil produksi menduduki peringkat ke-10 dunia. Varietas yang cukup banyak dibudidayakan yaitu jeruk manis baby java (Citrus sinensis). Jeruk diproduksi menjadi sirup dengan memperhatikan beberapa aspek, yaitu efektivitas proses terhadap penurunan kontaminasi mikroba dan masa simpan produk. Pengujian efektivitas proses dilakukan dengan mendeteksi kandungan mikroorganisme bahan setelah melewati tiap stasiun proses. Masa simpan produk diuji dengan metode Accelerated Shelf Life Time (ASLT) yang dioptimalkan dengan persamaan Arrhenius. Metode ini menggunakan faktor suhu penyimpanan sebagai penentu kecepatan reaksi kerusakan bahan. Adapun suhu penyimpanan yaitu 35 °C, 40 °C, dan 45 °C dengan parameter yang diamati yaitu total mikroba, kadar vitamin C, total padatan terlarut, dan pH. Hasil penelitian didapatkan bahwa proses produksi dapat secara signifikan menurunkan kandungan mikroba pada bahan dengan kandungan mikroba pada stasiun proses pertama dan akhir masing-masing sebesar 9.87 x 10 2 CFU/ml dan 0 CFU/ml. Pendugaan masa simpan didapatkan pH memiliki energi aktivasi (EA) terendah sebesar 467.46 dengan pendugaan apabila sirup jeruk disimpan pada suhu 7 °C dapat bertahan hingga 42 hari.

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“…Some of these methods require extensive sample preparation steps and thus are time-consuming and require specialist instrumentation which makes them less accessible to middle-and low-income countries. An alternative approach has been to use electrochemical sensors, as vitamin C is easily oxidised [19,20]. However, no studies have explored the potential for electrochemical detection as an approach for monitoring vitamin C in varying pharmaceutical formulations.…”

Section: Introductionmentioning

confidence: 99%

Detection of vitamin C in various falsified oral formulations using voltammetry

Miller

Kristová

Patel

2022

Journal of Electroanalytical Chemistry

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Fabrication of novel electrochemical sensor for determination of vitamin C in the presence of vitamin B9 in food and pharmaceutical samples

Cited by 29 publications

References 38 publications

Rapid Detection of Ascorbic Acid Based on a Dual-Electrode Sensor System Using a Powder Microelectrode Embedded with Carboxyl Multi-Walled Carbon Nanotubes

Rapid Detection of Ascorbic Acid Based on a Dual-Electrode Sensor System Using a Powder Microelectrode Embedded with Carboxyl Multi-Walled Carbon Nanotubes

Analisis Kualitas Sirup Jeruk Baby Java Pada Stasiun Proses Dan Pendugaan Umur Simpan Skala Pilot Plant

Detection of vitamin C in various falsified oral formulations using voltammetry

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