Capillary electrophoretic determination of thiosulfate and its oxidation products

2000 ◽  
Vol 879 (2) ◽  
pp. 235-243 ◽  
Author(s):  
A Padarauskas ◽  
V Paliulionyte ◽  
R Ragauskas ◽  
A Dikčius
Keyword(s):  
Oxidation Products ◽  
Capillary Electrophoretic

Capillary Electrophoretic Determination of Resveratrol in Wines†

1999 ◽  
Vol 47 (8) ◽  
pp. 3223-3227 ◽  
Author(s):  
Xuelin Gu ◽  
Le Creasy ◽  
April Kester ◽  
Michael Zeece
Keyword(s):  
Capillary Electrophoretic

Capillary electrophoretic determination of sulfite using the zone-passing technique of in-capillary derivatization

2001 ◽  
Vol 934 (1-2) ◽  
pp. 67-73 ◽  
Author(s):  
Giedre Jankovskiene ◽  
Zydrunas Daunoravicius ◽  
Audrius Padarauskas
Keyword(s):  
Capillary Electrophoretic

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%.

Production of Carboxymethyl Starches from Oxidized Starches and Determination of Their Tanning Characteristics

2021 ◽  
Vol 116 (6) ◽  
Author(s):  
Cigdem Kilicarislan Ozkan ◽  
Hasan Ozgunay
Keyword(s):  
Hydrogen Peroxide ◽  
Molecular Weight ◽  
Water Solubility ◽  
Good Alternative ◽  
Oxidation Products ◽  
Sodium Metaperiodate ◽  
Carboxymethyl Starch ◽  
Present Part

Hydrogen peroxide and sodium metaperiodate oxidation of starch and their possible utilization in tanning/retanning were examined in our previous studies. In the present part, accordingly with our previous findings, hydrogen peroxide and sodium metaperiodate oxidation products having appropriate molecular weight/size were selected and additionally carboxymethylated. The yields of the processes (carboxymethyl starches) were characterized comprehensively and the effect of carboxymethylation process on structures and tanning abilities were tried to be identified. The characterization results revealed that the carboxymethyl groups were successfully included into the structure and the water solubility of oxidized starches (especially periodate oxidized ones) increased by carboxymethylation process. From the evaluation of the tanning results and considering its properties i.e. gentle tanning effect with less astringency and correspondingly a relatively soft leather handle and smooth grain, it is concluded that dialdehyde carboxymethyl starch (CMS 1:0.7) can be utilized as yet another good alternative sustainable green tanning/retanning agent from starch.

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