IDENTIFIKASI GUGUS FUNGSI PADA MINYAK ATSIRI DAUN SINGKIL (Premna corymbosa) MENGGUNAKAN SPEKTROSKOPI FOURIER TRANSFORM INFRARED (FTIR)
DOI:
https://doi.org/10.24127/bioedukasi.v17i2.15664Abstract
Essential oils are complex mixtures of volatile secondary metabolites with significant biological activities, including antibacterial, antioxidant, and anti-inflammatory properties. Singkil leaves (Premna corymbosa) represent a potential natural source of essential oils containing various bioactive compounds. This study aimed to identify the functional groups present in the essential oil extracted from singkil leaves using Fourier Transform Infrared (FTIR) spectroscopy. The essential oil sample was analyzed using a Bruker OPUS 8.9.7 FTIR spectrometer within a wavenumber range of 400–4000 cm⁻¹. The FTIR spectrum exhibited four characteristic absorption bands: O–H stretching at 3287.79 cm⁻¹, an overtone/combination band at 2100.64 cm⁻¹, aromatic C=C stretching at 1635.78 cm⁻¹, and fingerprint region peaks at 461.99–413.34 cm⁻¹. These features indicate the presence of phenolics, flavonoids, furanoid sesquiterpenes, and amide alkaloids in the essential oil. Spectral library matching provided candidate structures with high similarity; however, these identifications remain putative and require confirmation with complementary analytical techniques. Overall, FTIR successfully revealed the functional group profile of P. corymbosa essential oil and can serve as a fundamental tool for its chemical characterization and quality assessment.
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Copyright (c) 2026 Teguh Pribadi, Ingghrid Renesti Clarita Hadi, Cindy Agriningsih Haruna, Niky Aulia Putri, Imam Wijayadi, Eadvin Rosrinda Awang Sari, Masitah Masitah
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