Winarsih, Yayuk (2018) ANALISIS KADAR BORAKS PADA SEMPOL DI TULUNGAGUNG MENGGUNAKAN METODE SPEKTROFOTOMETRI VISIBLE. Undergraduate thesis, Stikes Karya Putra Bangsa Tulungagung.
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Abstract
Borax is a harmful chemical compound for food. Borax is added to food as a food additive aims to increase elasticity, provides a dense texture, delivers savory taste, and is durable in foods containing starch or flour. The purpose of this study is to determine the optimum condition of the analysis of borax content in sempol in Tulungagung by using visible spectrophotometer method, and to know the level of borax in sempol in Tulungagung by using visible spectrophotometer method. The method used in this research is soaking the sample by using aquadest solvent and HCL, qualitative test, validation method which includes precision test, accuracy test, and linearity test then done quantitative test by using visible spectrophotometer. The results of this study indicate that from 10 samples taken there are 3 samples that positively contain borax. In the validation method that has been done obtained linearity test results in the range 20-40 ppm with coefficient value (r) is 0.9983; the accuracy values for aquadest solvent and HCl were 108.03% and 118.31%, respectively; precision values for aquadest solvents and HCL were 1.9% and 3.4%, respectively. From the validation test all the methods that have been tested are valid, so it can be done the determination of borax content on the sample. Of the 3 samples that have been tested qualitatively obtained the lowest borax content 26.29 ± 0.1419 ppm and the highest level is 37.2 ± 0.2584 ppm. Key Word : boraks, sempol, kurkumin, spektrofotometer visibel
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | boraks, sempol, kurkumin, spektrofotometer visibel |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Program Studi > S1 Farmasi |
| Depositing User: | Surya Hadi Prasetyo |
| Date Deposited: | 24 Jan 2022 04:07 |
| Last Modified: | 24 Jan 2022 04:07 |
| URI: | http://repository.stikes-kartrasa.ac.id/id/eprint/45 |
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