A new voltammetric method for the simultaneous determination of the antioxidants TBHQ and BHA in biodiesel using multi-walled carbon nanotube screen-printed electrodes

Caramit, Ricardo Pini; Andrade, Adriana Garabini de Freitas; Souza, João Batista; Araújo, Tatiane Alfonso de; Viana, Luíz Henrique; Trindade, Magno Aparecido Gonçalves; Ferreira, Valdir Souza

doi:10.1016/j.fuel.2012.06.062

Cited by 94 publications

(51 citation statements)

References 53 publications

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“…Metoda pengujian kandungan antioksidan dapat dilakukan secara spektrofotometri [7,13] , voltametri [14,16] , dan kromatografi [7,8,15] . yang berwarna kuning [7,13] .…”

Section: Pendahuluanunclassified

VALIDASI METODA PENENTUAN ANTIOKSIDAN TOTAL (DIHITUNG SEBAGAI ASAM SITRAT) DALAM SAMPEL JERUK SECARA SPEKTOFOTOMETRI DENGAN MENGGUNAKAN OKSIDATOR FeCl3 DAN PENGOMPLEKS ORTO-FENANTROLIN

Yefrida¹,

Ulfaningsih²,

Loekman³

2014

J.Ris.Kim.

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Antioxidant is a compound that can be used to obstruct species oxygen reactive, species nitrogen, and other free radicals so it can be used degenerative illnesses inhibition. Citric acid is a natural antioxidant that can be found in some kind of oranges. There are some methode that usually used to determination the antioxidant, such as CUPRAC, DPPH, and FRAP. Objective of this research is studied about alternative method to determine total antioxidant that is counted as citric acid by using FeCl 3 as an oxidator and o-phenantroline as a complexant reagent. In studied of appropriateness of this method, validation has been done with parameter linearity, LoD, LoQ, SDR, and recovery with samples orange, kaffir lime, and lime. Base on the research, the regression equation is Y = 0,066 + 117.35 X and R 2 = 0.990 with value of LoD is1.15x10M and LoQ is 3.86x10 -3 M. The value of SDR and recovery in samples orange, kaffir lime, and lime are 1.64%, 0.53% 2.14%, and 100.47%, 93.58%, 93.78%, respectively. Base on validation method data, can be concluded that this method appropriate to be used to determination of total antioxidant for samples orange, kaffir lime, and lime. Keywords : Antioxidant, Validation Method, Spectrophotometry PENDAHULUANAntioksidan adalah zat yang dapat menunda, memperlambat dan mencegah terjadinya proses oksidasi. Antioksidan sangat bermanfaat bagi kesehatan dan berperan penting untuk mempertahankan mutu produk pangan. Manfaat antioksidan bagi kesehatan dan kecantikan, misalnya untuk mencegah penyakit kanker dan tumor, penyempitan pembuluh darah, penuaan dini, dan lain-lain. Dalam produk pangan, antioksidan dapat digunakan untuk mencegah terjadinya proses oksidasi yang dapat menyebabkan kerusakan, seperti ketengikan, perubahan warna dan aroma, serta kerusakan fisik lainnya. Penggunaan antioksidan sebagai obat makin berkembang seiring dengan makin bertambahnya pengetahuan tentang aktifitas radikal bebas terhadap beberapa penyakit degeneratif seperti penyakit jantung dan kanker karena dapat menyumbangkan satu atau lebih elektron kepada radikal bebas sehingga radikal tersebut dapat diredam [1,2] Antioksidan ada yang didapat dari bahan alam dan ada yang sintetik. Seiring meningkatnya kesadaran orang tentang efek samping dari antioksidan sintetik seperti kerusakan hati dan bersifat karsinogenik, maka peneliti banyak melakukan penelitianpenelitian untuk mendapatkan bahan alam dengan kandungan antioksidan yang tinggi. Beberapa penelitian telah dilakukan untuk menentukan kandungan antioksidan dalam bahan alam antara lain dalam hazelnut [3] , tumbuhan obat [4] , madu, mint dan bit [5] ,

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“…Metoda pengujian kandungan antioksidan dapat dilakukan secara spektrofotometri [7,13] , voltametri [14,16] , dan kromatografi [7,8,15] . yang berwarna kuning [7,13] .…”

Section: Pendahuluanunclassified

VALIDASI METODA PENENTUAN ANTIOKSIDAN TOTAL (DIHITUNG SEBAGAI ASAM SITRAT) DALAM SAMPEL JERUK SECARA SPEKTOFOTOMETRI DENGAN MENGGUNAKAN OKSIDATOR FeCl3 DAN PENGOMPLEKS ORTO-FENANTROLIN

Yefrida¹,

Ulfaningsih²,

Loekman³

2014

J.Ris.Kim.

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“…In addition, these procedures have minimal safety and health hazards. Caramit et al (2013) and Tomášková et al (2014) have described voltammetric procedures for the determination of phenolic antioxidants in lubricating oils. Caramit et al (2013) simultaneously determined tert-butyl hydroquinone and butyl hydroxyanisole in biodiesel using a screen-printed electrode in a Britton–Robinson buffer (0.04 mol L −1 ) containing methanol (2.0%) and cetyltrimethylammonium bromide.…”

Section: Introductionmentioning

confidence: 99%

“…Caramit et al (2013) and Tomášková et al (2014) have described voltammetric procedures for the determination of phenolic antioxidants in lubricating oils. Caramit et al (2013) simultaneously determined tert-butyl hydroquinone and butyl hydroxyanisole in biodiesel using a screen-printed electrode in a Britton–Robinson buffer (0.04 mol L −1 ) containing methanol (2.0%) and cetyltrimethylammonium bromide. Tomášková et al (2014) simultaneously determined butylated hydroxyanisole and butylated hydroxytoluene in mineral and synthetic oil by linear-sweep voltammetry using a gold disc electrode with dilute H 2 SO 4 and isopropanol.…”

Section: Introductionmentioning

confidence: 99%

Voltammetric Determination of Dinonyl Diphenylamine and Butylated Hydroxytoluene in Mineral and Synthetic Oil

et al. 2016

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A method is reported for the determination of diphenylamine and butylated hydroxytoluene in mineral and synthetic oil. The procedure used differential pulse voltammetry with a glassy carbon electrode. This method was then used for determining these antioxidants in supporting electrolyte consisting of dilute sulfuric acid and sodium dodecyl sulfonate in ethanol. Anodic peaks were obtained for both analytes. Oxidation peaks at 250 mV were observed from a mixture of butylated hydroxytoluene and dinonyl diphenylamine, allowing their simultaneous determination. This approach was successfully used for the determination of dinonyl diphenylamine and butylated hydroxytoluene in fortified mineral and synthetic oils with good accuracy and precision.

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“…Electrochemical methods have been applied for the determination of BHA due to their simplicity, sensitivity, stability, rapid response, and low cost [14][15][16][17][18][19][20][21][22][23][24][25][26]. For instance, the electrochemical oxidation of BHA at a glassy carbon electrode (GCE) that was modified with AuNPs-PVP-graphene was investigated [14].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of graphene oxide-wrapped core–shell structured carbon sphere@Al2O3 as electrode material for voltammetric determination of butylated hydroxyanisole in food products

Gan

Shi

et al. 2015

Ionics

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Here, we report a graphene oxide-wrapped coreshell structured carbon sphere@Al 2 O 3 composite (CS@Al 2 O 3 @GO) as the electrode material for sensitive determination of butylated hydroxyanisole (BHA). The coreshell structured CS@Al 2 O 3 was synthesized through a solution-based approach by using glucose and metal salts as precursors via a simple one-pot hydrothermal synthesis. Then, the CS@Al 2 O 3 was amino-functionalized and wrapped by conductive graphene oxide (GO) sheets through the electrostatic interaction. As a result, the CS@Al 2 O 3 @GO endowed the modified electrode fast electron transfer rate and high electrocatalytic activity toward BHA oxidation. Under the optimal conditions, the oxidation current increased linearly with the concentration of BHA in the range of 0.2~200 μM with the detection limit and quantification limit of 41 and 136.7 nM using differential pulse voltammetry. The presented method was also demonstrated for the determination of BHA in food samples with satisfactory results.

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A new voltammetric method for the simultaneous determination of the antioxidants TBHQ and BHA in biodiesel using multi-walled carbon nanotube screen-printed electrodes

Cited by 94 publications

References 53 publications

VALIDASI METODA PENENTUAN ANTIOKSIDAN TOTAL (DIHITUNG SEBAGAI ASAM SITRAT) DALAM SAMPEL JERUK SECARA SPEKTOFOTOMETRI DENGAN MENGGUNAKAN OKSIDATOR FeCl3 DAN PENGOMPLEKS ORTO-FENANTROLIN

VALIDASI METODA PENENTUAN ANTIOKSIDAN TOTAL (DIHITUNG SEBAGAI ASAM SITRAT) DALAM SAMPEL JERUK SECARA SPEKTOFOTOMETRI DENGAN MENGGUNAKAN OKSIDATOR FeCl3 DAN PENGOMPLEKS ORTO-FENANTROLIN

Voltammetric Determination of Dinonyl Diphenylamine and Butylated Hydroxytoluene in Mineral and Synthetic Oil

Synthesis of graphene oxide-wrapped core–shell structured carbon sphere@Al2O3 as electrode material for voltammetric determination of butylated hydroxyanisole in food products

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