Determination of borax content in wet noodles circulating in market by uv-vis spectrophotometry method using curcumin reagent

Raisani Rusli (Universitas Islam Negeri (Uin) Syarif Hidayatullah)

International Journal of Nursing and Midwifery Research
Vol. 1 No. 1 (2022): November: Nursing and Midwifery Research

The determination of borax contains in wet noodles done by curcumin reagent as color regent which produced rosocyanin complexes and monitor by using UV-Vis spectrophotometry in maximum wave length at 545.95 nm. Before it was used in a sample which was taken from Ciputat market, this method was validated. The results showed that calibration curve in linear 6.25-50 µg/ml with regression equal y = 0.008 + 0.012x and correlation coefficient (r) = 0.9994. this method gave detection limit at 3.1132 µg/ml and qualification limit at 10.3775 µg/ml. The simulation recovery of wet nodles was 99.767 ± 1.114 %. The result of examination of wet noodles sample which was marketed in Ciputat market that four of five contained 3.76112 ± 0.0451, 108.592 ± 0.02185, 117.9461 ± 0.01455, and 6.275 ± 0.0221 borax.