Pengujian Kandungan Zat Pewarna Rhodamin B Pada Beberapa Jenis Makanan Dengan Mini Spektrofotometer Absorpsi Portabel

Halimah, Nurul; Suryaningsih, Sri; Mindara, Jajat Yuda; Hidayat, Sahrul

doi:10.21009/0305020205

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The correlation coefficient value obtained in this validation process meets the requirements for validation acceptance (R 2 > 0.99). These results denote that the curve has an acceptable linearity between concentration and absorbance, complying with Lambert Beer's law, which states that the higher the concentration, the greater the absorbance produced [31].…”

Section: Linearity Test Of the Uv-vis Spectrophotometric Methodssupporting

confidence: 69%

Identifying, Quantifying, and Recovering a Sorbitol-Type Petrochemical Additive in Industrial Wastewater and Its Subsequent Application in a Polymeric Matrix as a Nucleating Agent

2023

View full text Add to dashboard Cite

Currently, polypropylene (PP) is highlighted using sorbitol-based clarifying agents since these agents are high quality, low cost, and work as a barrier against moisture, which makes PP ideal for packaging food, beverages, and medical products, among others. The use of analytical methods capable of recovering these additives in wastewater streams and then reusing them in the PP clarification stage represents an innovative methodology that makes a substantial contribution to the circular economy of the PP production industry. In this study, a method of extraction and recovery of the Millad NX 8000 was developed. The additive was recovered using GC-MS and extracted with an activated carbon column plus glass fiber, using an injection molded sample, obtaining a recovery rate greater than 96%. TGA, DSC, and FTIR were used to evaluate the recovered additive’s glass transitions and purity. The thermal degradation of the recovered additive was found to be between 340 and 420 °C, with a melting temperature of 246 °C, adopting the same behavior as the pure additive. In FTIR, the characteristic absorption peak of Millad NX 8000 was observed at 1073 cm−1, which indicates the purity of the extracted compound. Therefore, this work develops a new additive recovery methodology with high purity to regulate the crystallization behavior and of PP.

show abstract

Section: Linearity Test Of the Uv-vis Spectrophotometric Methodssupporting

confidence: 69%

Identifying, Quantifying, and Recovering a Sorbitol-Type Petrochemical Additive in Industrial Wastewater and Its Subsequent Application in a Polymeric Matrix as a Nucleating Agent

2023

View full text Add to dashboard Cite

show abstract

“…These results indicate that the curve has fine linearity, thus there is a linear relationship between concentration and absorbance. Based on Lambert Beer's law, the higher the concentration, the higher the absorbance produced (Halimah et al, 2016).…”

Section: Linearity Test Of Uv-vis Spectrophotometric Methodsmentioning

confidence: 99%

Validation of UV-Visible Spectrophotometry for Measuring Rhodamine B Content in Crackers

Oktriana¹,

Aeni

Sari

2022

JAFN

View full text Add to dashboard Cite

Rhodamine B is a synthetic dye that is often misused as a food coloring in crackers. Rhodamine B consumption through food can irritate the digestive tract, impair liver function, and cancer. The purpose of the study was to determine the content of rhodamine B in crackers. This study used a quantitative method, and purposive sampling was employed as a sampling technique. Method validation was carried out against a UV-Visible spectrophotometer in testing Rhodamine B in crackers. Validation of the method produces a linear regression equation of y = 0.2901x + 0.0082, with a correlation coefficient value (r2) = 0.9985, and a Vxo value of 2.65%. The instrument validation shows a Limit of Detection (LOD) of 0.1582 ppm and a Limit of Quantification (LOQ) of 0.5274 ppm. The results from the accuracy-test showed an average %diff of 0.88%; 3.79%, and -6.88%, while the average percentages of recovery were 101%, 104, and 93% respectively. Precision testing results showed that the value of % RSD 2/3 CV Horwitz. Qualitative measurements showed that all samples tested for Rhodamine B in this study showed negative results. This study suggested that UV-Visible spectrophotometry is a valid method that can be used to measure levels of Rhodamine B in food.

show abstract

Pengujian Kandungan Zat Pewarna Rhodamin B Pada Beberapa Jenis Makanan Dengan Mini Spektrofotometer Absorpsi Portabel

Cited by 2 publications

References 0 publications

Identifying, Quantifying, and Recovering a Sorbitol-Type Petrochemical Additive in Industrial Wastewater and Its Subsequent Application in a Polymeric Matrix as a Nucleating Agent

Identifying, Quantifying, and Recovering a Sorbitol-Type Petrochemical Additive in Industrial Wastewater and Its Subsequent Application in a Polymeric Matrix as a Nucleating Agent

Validation of UV-Visible Spectrophotometry for Measuring Rhodamine B Content in Crackers

Contact Info

Product

Resources

About