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All Journal Journal of Food and Pharmaceutical Science Indonesian Journal of Chemistry JMM (Jurnal Masyarakat Mandiri) Jurnal Penelitian dan Pengabdian Kepada Masyarakat UNSIQ Indonesian Journal of Chemical Analysis (IJCA) Journal of Food and Pharmaceutical Sciences
Anggita Rosiana Putri
Department Of Pharmacy, Faculty Of Medicine, Universitas Brawijaya, Jl. Veteran, Malang 65145, Indonesia
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Neuroscience Other

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Detection of Adulterants Metanil Yellow in Turmeric Powder Using Fourier Transform Infrared (FTIR) Spectroscopy Combined with Chemometrics OPLS-DA and PLS Dia, Syahril Maulid; Putri, Anggita Rosiana; Muchlashi, Luthfi Ahmad
Indonesian Journal of Chemical Analysis (IJCA) Vol. 7 No. 1 (2024): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol7.iss1.art7

Abstract

Turmeric powder (Curcuma longa L.) is often used for food coloring and flavoring. The high demand for turmeric powder has led to adulteration, one of which is metanil yellow. This study aims to detect metanil yellow dye in turmeric powder using Infrared Spectroscopy (FT-IR) and Chemometrics. The chemometrics model was built by preparing turmeric powder and metanil yellow in the concentration range of 0-50% (w/w). Data was processed using multivariate calibration using OPLS-DA (Orthogonal Partial Least Squares Discriminant Analysis) and PLS (Partial Last Square). The results obtained from OPLS-DA processing of market samples 1 and 2 are estimated to be pure turmeric powder, and samples 3 to 10 are adulterated. From the PLS results, the best calibration model was obtained at wave numbers 1199-539 cm-1 with R2 values for calibration and validation of 0.9967 and 0.9970, respectively, with RMSEC of 2.48 and RMSEP of 6.35. The PLS results showed that in sample 3 containing metanil yellow, in samples 4 to 10, no metanil yellow was detected. The ingredients added were not metanil yellow. It was concluded that FTIR combined with chemometrics could detect the metanil yellow in turmeric powder.
Co-Authors Abdul Rohman Abdul Rohman Abdul Rohman Anjar Windarsih Any Guntarti Awidarta, Kevin Citra Ariani Edityaningrum, Citra Dia, Syahril Maulid Elvira, Avika Rizky Fernandez, Ceferino Carrera Huda, Laili Fadhotun Ihsan, Bachtiar Rifai Pratita Irnawati Irnawati Jang, Young Pyo Khaerunisa, Intan Laela Hayu Nurani Muchlashi, Luthfi Ahmad Muh. Akbar Bahar, Muh. Akbar Palma, Miguel Pratita Ihsan, Bachtiar Rifai Setyaningsih, Widiastuti Sugeng Riyanto Ulum, Muhammad Bachrul VALENTINA YURINA