Electronic Theses and Dissertation

Telah dirancang sebuah alat pendeteksi warna untuk mengukur kadar tatrazine dalam jajanan anak-anak. Alat ini dirancang dengan menggunakan sensor warna TCS3200 sebagai pendeteksi warna, mikrokomputer Arduino Uno dengan software program Integrated Development Environment (IDE). Hasil pengukuran akan dibandingkan dengan metode standard Spektrofotometer UV Vis. Sampel dipreparasi melalui pemanasan dan diekstraksi dengan benang wol dan diambil sampel yang menempel pada benang wol. Teknik pengambilan sampel yaitu 6 jenis jajanan yang dijual di Kota Banda Aceh. Hasil analisis menunjukkan bahwa kadar tartrazine mengunakan sensor warna TCS3200 berkisar antara 1,34-4,65 ppm dan menggunakan Spektrofotometer UV-Vis berkisar antara1,32-4,64 ppm. Linearitas diperoleh pada rentang konsentrasi 1-9 ppm menunjukkan kurva kalibrasi yang linear menggunakan sensor warna TCS3200 (R2 = 0,987) dan Spektofotometer UV Vis (R2 = 0,988). Akurasi (%recovery) menggunakan sensor warna TCS3200 berkisar antara 93,2-109%, dan Spektofotometer UV Vis berkisar antara 93-115%. Simpangan baku relatif (%RSD) intraday dan interday tidak lebih dari 2%. Berdasarkan perhitungan uji t dapat menunjukkan bahwa pengukuran dengan sensor warna TCS3200 relatif tidak memiliki perbedaan dengan pengukuran Spektrofotometer UV Vis.

A color detectorhas been designed to measure the tartrazine level in snacks. The systemis designed using a TCS3200color sensor as an input. Arduino uno microcomputer as a signal conditioning and signal processing units with Integrated Development Environment (IDE) software. The measurement result will be compared with the standart Ultra Violet Visible (UV Vis) Spectrophotometer instrument. The samples were prepared by heating and extracted with woolen threads and the samples attached to the woolen threads were taken. The sampling technique is 6 types of snacks sold in the city of Banda Aceh. The results of the analysis showed that the levels of tartrazine using the TCS3200 color sensor ranged from 1.34-4.65 ppm and using a UV-Vis spectrophotometer ranged from 1.32-4.64 ppm. The linearity obtained in the concentration range of 1-9 ppm shows a linear calibration curve using the TCS3200 color sensor (R2 = 0.987) and UV Vis Spectrophotometer (R2 = 0.988). Accuracy (% recovery) using the TCS3200 color sensor ranges from 93.2-109%, and the UV Vis Spectophotometer ranges from 93-115%. The intraday and interday relative standard deviation (%RSD) is not more than 2%. Based on t test calculations, it can be shown that measurements with the TCS3200 color sensor have relatively no difference with UV Vis Spectrophotometer measurements.