Determination of Butylated Hydroxyanisole by Briggs-Rauscher Oscillating Reaction Catalyzed by a Macrocyclic Nickel (II) Complex

2016 ◽  
Vol 63 (7) ◽  
pp. 572-579 ◽  
Author(s):  
Juanjuan Hu ◽  
Gang Hu ◽  
Jimei Song ◽  
Zhaohui Fang ◽  
Xiaofeng Shen ◽  
...  
Keyword(s):  
Butylated Hydroxyanisole ◽  
Oscillating Reaction ◽  
Macrocyclic Nickel

Determination of riboflavin by the perturbation of active oxygen on a chemical oscillating reaction

2000 ◽  
Vol 413 (1-2) ◽  
pp. 115-123 ◽  
Author(s):  
Zhang Ke ◽  
Ma Wanhong ◽  
Cai Ruxiu ◽  
Lin Zhixin ◽  
Gan Nanqin
Keyword(s):  
Active Oxygen ◽  
Oscillating Reaction

Analysis of Synthetic Antioxidant in Food by Capillary Electrophoresis

2011 ◽  
Vol 361-363 ◽  
pp. 1855-1858 ◽  
Author(s):  
Qian Xiang ◽  
Ying Gao
Keyword(s):  
Capillary Electrophoresis ◽  
Amperometric Detection ◽  
Peak Height ◽  
Butylated Hydroxyanisole ◽  
Applied Potential ◽  
Synthetic Antioxidant ◽  
Separation Potential ◽  
Relative Standard ◽  
Capillary Electrophoretic

A capillary electrophoretic assay for determining synthetic antioxidant butylated hydroxyanisole in food has been developed. The extraction with 70% (v/v) methanol quantitatively extracted synthetic antioxidant. The separation was carried out by CZE using phosphate at a separation potential of 18 kV. Amperometric detection was achieved with an applied potential of 0.60 V. A linear relationship between the peak height and the concentration of the analyte was found in the range 1.8-180 µg/mL for BHA, with correlation coefficient of 0.994. The relative standard deviations of migration time and peak height were 0.19 and 5.3 %, respectively. The method developed was successfully applied for the determination of synthetic antioxidant butylated hydroxyanisole in food. Recovery of butylated hydroxyanisole was 93%.

scholarly journals Gas Chromatographic Determination of Butylated Hydroxyanisole (BHA) and Butylated Hydroxytoluene (BHT) in Products Containing Capsaicinoids

1996 ◽  
Vol 79 (6) ◽  
pp. 1459-1462
Author(s):  
Bernard DeWitt ◽  
Gunnar Finne
Keyword(s):  
Chromatographic Method ◽  
Chromatographic Determination ◽  
Butylated Hydroxytoluene ◽  
Butylated Hydroxyanisole ◽  
Liquid Chromatographic Method ◽  
Gas Chromatographic Method ◽  
Liquid Chromatographic

Abstract Because of interference by coeluting capsaicinoids, the commonly used liquid chromatographic method for determining butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) in pepperoni and spice blends is not reliable. A gas chromatographic method is described that cleanly separates these antioxidants from interfering substances. Average recoveries of BHA and BHT from oleoresin spiked at 5 concentrations were 97.6 and 104.3%, respectively. From pepperoni spiked at 4 levels, average recoveries were 79.1 and 87.9%, respectively. The repeatability of the method when applied to 5 replicates of pepperoni toppings was 36.4 ± 1.1 ppm for BHA and 32.2 ± 0.8 ppm for BHT.

Estimation of Butylated Hydroxyanisole and Butylated Hydroxytoluene in Meat Products

1974 ◽  
Vol 57 (4) ◽  
pp. 804-805
Author(s):  
Joginder Singh ◽  
Michel R Lapointe
Keyword(s):  
Ball Mill ◽  
Meat Products ◽  
Butylated Hydroxytoluene ◽  
Butylated Hydroxyanisole ◽  
Ionization Detector ◽  
Direct Extraction ◽  
Qualitative And Quantitative ◽  
Flame Ionization ◽  
Acidic Alumina

Abstract A procedure is described for the estimation of butylated hydroxyanisole and butylated hydroxytoluene in meat products. It involves direct extraction of the antioxidants from the meat products by using acetonitrile as the solvent in a steel ball mill. Cleanup is carried out on a column of deactivated acidic alumina. Gas chromatography with a flame ionization detector is used for qualitative and quantitative determination of the antioxidants. Average recoveries of antioxidants added to 10 g samples of corned beef and sausages ranged from 61 to 90%.

scholarly journals Fast and direct determination of butylated hydroxyanisole in biodiesel by batch injection analysis with amperometric detection

Talanta ◽  
2011 ◽  
Vol 85 (3) ◽  
pp. 1274-1278 ◽  
Author(s):  
Thiago Faria Tormin ◽  
Denise Tofanello Gimenes ◽  
Eduardo Mathias Richter ◽  
Rodrigo Alejandro Abarza Munoz
Keyword(s):  
Direct Determination ◽  
Amperometric Detection ◽  
Butylated Hydroxyanisole

scholarly journals Determination of epinephrine by the Briggs-Rauscher oscillating system using non-equilibrium stationary state

2012 ◽  
Vol 77 (1) ◽  
pp. 95-104 ◽  
Author(s):  
Jinzhang Gao ◽  
Yanjun Liu ◽  
Jie Ren ◽  
Xiaoli Zhang ◽  
Li Ming ◽  
...  
Keyword(s):  
Detection Limit ◽  
Stationary State ◽  
Lower Detection Limit ◽  
Highly Sensitive ◽  
Lower Detection ◽  
Oscillating Reaction ◽  
The Difference ◽  
Foreign Species ◽  
Non Equilibrium

A highly sensitive method for the determination of epinephrine was proposed, which was based on the perturbation of epinephrine to Briggs-Rauscher oscillating system involving malonic acid, Mn2+, H+, IO3 - and H2O2 at non-equilibrium stationary state. The concentration of KIO3 was chosen as a control parameter to find the bifurcation point in this paper. Results showed that a well linear relationship between the difference of potential and the negative logarithm concentrations of epinephrine existed in the range of 1.1?10-7?5.2?10-9 mol L-1 with a lower detection limit of 6.8?10-10mol L-1 and a correlation coefficient of 0.9974. Compared to the classical oscillating reaction, this method has a lower detection limit and wider linear range. The effects of some foreign species, which may possibly be existed with epinephrine, on determination were also investigated. The proposed method has been successfully used to determine the epinephrine both in the serum and adrenaline hydrochloride injection.

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