CARBON PASTE ELECTRODE MODIFIED WITH TARTRAZINE IMPRINTED POLY(GLUTAMIC ACID) AND TARTRAZINE IMPRINTED POLYGLYCINE FOR VOLTAMMETRIC DETERMINATION OF TARTRAZINE

• Main Author: Nuroctaviani, Lety
• Format: Theses
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/42554
• Institution: Institut Teknologi Bandung

!artrazine is a dye synthetic material that commonly used in food industry to lmprove the appearance and texture of the products. This material is often used because its stability to light, oxygen, pH, and has a low price. However, excessive use of tartrazine is reported to cause asthma, migraines, eczema, thyroid cancer, and lupus. Therefore, determination of tartrazine for food quality control is important. In this research, voltammetric analysis methods have been developed using carbon paste electrode (CPE) modified molecularly imprinted polymers (MIP) for determination of tartrazine. In this reasearch, there are two type of monomers that we used, glutamic acid and glycine. The modification CP E surface with MIP was conducted by electropolymerization process using cyclic voltammetry (CV) technique in phosphat buffer solution of pH 7 containing glutamic acid as functional monomer and tarrrazine as template and the other solution containing glycine as functional monomer. The measurement of tartrazine using MIP-CPE glutamic acid and MIP-CPE glycine showed that modification could increase the current response. The effect of monomer and template concentrations, number of electropolymerization cycles, and pH of the analyte solution was optimized. MIP-CPE had good repeatability with % RSD (( 8.2CJ % for M JP-CP E gluramic ucid and 5. 13% for M IP-C PE glycine (n=40). lvf!P-C PE calihration cun•e prol'ides a linier re\ponse in the concentration range o{J-J() f..1M wirh detec ri on limir ofO 5-I f..lAI j( n• M!P-CPE luramic acid and 0.66 pMfur MIP-CPE gl ycine. .