FABRIKASI STRIP TES BERBASIS REAGEN ASAM SULFANILAT DAN α-NAFTILAMIN UNTUK ANALISIS PENGAWET NITRIT PADA SAMPEL SOSIS KALENG

Abstract

A nitrite sensor has been developed as test strip based on sulfanilic acid and α-naphtylamine to determine concentration of nitrite in canned sausage. The test strip was fabricated by immobilized 3µL reagent mixture of sulfanilic acid and αnaphtylamine

at 1:1 volume ratio. The detection area of test strip was made from whatman paper which has size of 0,5x0,5 cm. The characteristization results of test strip were: the response time at 7 minutes; test strip can be used for three weeks stored at chiller o C while LOD was 12,862 ppm and LOQ was 42.873 ppm; the measurement of sensor response was interferenced by NaCl and protein with %inteference >5% at 1:100 concentration ratio. Test strips have good precision