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All Journal Indonesian Journal of Pharmaceutical Science and Technology Jurnal Farmasi Klinik Indonesia Majalah Obat Tradisional Universa Medicina Acta Pharmaciae Indonesia : Acta Pharm Indo JURNAL MANAJEMEN DAN PELAYANAN FARMASI (Journal of Management and Pharmacy Practice) Jurnal Ilmu Kefarmasian Indonesia
Endriastuti, Nialiana Endah
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Biochemistry, Genetics & Molecular Biology Computer Science & IT Health Professions Immunology & microbiology Medicine & Pharmacology Public Health

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Analysis of Virgin Coconut Oil (VCO) Purity Using UV-Vis Spectrophotometry Combined with PCA and HCA Chemometrics Wijaya, Triyadi Hendra; Rehana, Rehana; Arisma, Divaa' Rizqi; Endriastuti, Nialiana Endah; Suryoputri, Masita Wulandari
Indonesian Journal of Pharmaceutical Science and Technology Vol 13, No 2 (2026)
Publisher : Indonesian Journal of Pharmaceutical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/ijpst.v13i2.63230

Abstract

VCO is a vegetable oil with many health and cosmetic benefits, but it is relatively more expensive than other vegetable oils, making it vulnerable to adulteration. UV-Vis spectrophotometry, combined with chemometric techniques, was used to distinguish VCO from other oils. Soybean oil (SO) and sunflower oil (SFO) are the main adulterants of VCO. This study aimed to evaluate the ability of UV-Vis spectrophotometry combined with chemometrics to differentiate VCO from SO and SFO. Samples were measured for absorbance at wavelengths from 200 to 400 nm. The UV-Vis spectral data were further analyzed using chemometric methods, PCA, and HCA, to classify the samples. The PCA model successfully differentiated VCO, SO, and SFO in RStudio 4.4.2, with variance explained by PC1 (81.3%) and PC2 (17.1%). VCO samples are clearly separated from other samples, while SO and SFO appear close to each other due to their similar physicochemical properties. Mixed oil samples were grouped by composition. HCA analysis also showed a grouping pattern consistent with PCA results. Therefore, UV-Vis spectrophotometry, combined with chemometric techniques, can effectively distinguish VCO from SO and SFO.
Co-Authors Arisma, Divaa' Rizqi Astuti, Dwi Aprilia Azzahra, Alfita Devitasari, Arinda Dewi Latifatul Ilma Fitriani, Novita Inawanda Hanif Nasiatul Baroroh Heny Ekowati Laksmi Maharani Mumpun, Jitayu Sekarininta Nadzif, Faradina Qorina Purgiantari, Purgiantari Putri, Atika Rehana, Rehana Suryoputri, Masita Wulandari Triyadi Hendra Wijaya Tunggul Adi Purwonugroho Waluyo, Syaikah Syahidah