ANNGELA, OPPIE (2020) VALIDASI METODE PENETAPAN KADAR BORAKS PADA KERUPUK PULI YANG DIJUAL DI PASAR TRADISINONAL DESA NGUNUT MENGGUNAKAN SPEKTROFOTOMETER UV-VIS. Undergraduate thesis, Stikes Karya Putra Bangsa Tulungagung.
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Abstract
Puli crackers are crackers made from rice seasoned with spices and flavor enhancer. Many of the Puli crackers are sellers who hawked their trades in the traditional market of Ngunut village, so the sellers have to make or prepare the crackers as well as possible so that the blinds can be sold. In this case, most likely some manufacturers add hazardous materials (borax) in the manufacturing of Puli crackers. The purpose of this research is to validate the method and to know the borax level of the Puli crackers sold in the traditional market of Ngunut village using the UV-Vis spectrophotometry method. Optimization of borax wavelengths at a wavelength range of 500-600 nm. The prepared samples were analyzed using UV-Vis spectrophotometry at the maximum wavelength of 506 nm. Further validation methods include, Linieritas test, accuracy test, precision test, and LOD Test & LOQ. The results of this study obtained the optimum wavelength is 506 nm. Based on the validation method that has been done obtained the results of interference linearity in the concentration range of 5ppm; 20ppm; 35ppm; 50ppm; 65PPM with a physical value of R2 correlation of 0.993,%recovery by 96.5%, the precision value obtained by 0.375%, and the LOD value of 48.565 ppm amounting and a Loq value of 161.381 ppm. The Boracic level in sample A amounted to 1,380 ± 1.824 ppm, sample B of 852.1 ± 2.367 ppm, sample C of 1,373 ± 1.824 ppm, and sample D of 185.9 ± 1.788 ppm. Keywords: puli crackers, boraks, UV-Vis spectrophotometer
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | kerupuk puli, boraks, spektrofotometer UV-Vis |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Program Studi > S1 Farmasi |
| Depositing User: | Surya Hadi Prasetyo |
| Date Deposited: | 27 May 2022 04:11 |
| Last Modified: | 27 May 2022 04:11 |
| URI: | http://repository.stikes-kartrasa.ac.id/id/eprint/81 |
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