<![CDATA[Ulvan is a sulfated polysaccharide derived from green seaweed cell walls, particularly from species within the genus Ulva. These macroalgae contain various bioactive compounds such as polysaccharides, proteins, lipids, vitamins, and dietary fiber, which contribute to their potential applications in pharmaceutical and biomedical fields. This study aimed to extract ulvan from Ulva reticulata collected from the coastal area of Nasipit, Agusan del Norte, and to characterize its functional groups using Fourier Transform Infrared (FTIR) spectroscopy. The extraction was carried out using an acid-based method, yielding approximately 3.5 g of crude polysaccharide. The structural characteristics of the polysaccharide extracts were analyzed using Fourier Transform Infrared (FTIR) spectroscopy. The FTIR spectra revealed key functional groups at specific absorption peaks: 3231-3369 cm⁻¹ (hydroxyl groups/alcohol), 1652 cm⁻¹ (amides), 1403 cm⁻¹ (aromatic rings), and 1120 cm⁻¹ (aliphatic amines). A comparative analysis was conducted between the FTIR profiles of U. reticulata obtained via acid extraction in this study and secondary data from literature involving hot water extraction of U. reticulata and acid extraction of Ulva lactuca. This comparison aims to evaluate how different extraction methods and species variations influence the presence and intensity of functional groups in the resulting ulvan.]]>
Copyrights © 2025
