William Xaveriano Waresindo, Halida Rahmi Luthfianti, Fitri Afriani, Dhewa Edikresnha, Dian Ahmad Hapidin, Akfiny Hasdi Aimon, Tri Suciati, Khairurrijal Khairurrijal
In this study, glucomannan was extracted from young porang tubers (Amorphophallus muelleri Blume) using an ethanol-based multilevel concentration method. The resulting glucomannan porang powder (PGM) displayed a pale-yellow hue with a purity level of 63.38%. It contained 6.44 wt% moisture and 1.09 wt% minerals, including 94 ppm of calcium oxalate, highlighting its refined quality. PGM exhibited exceptional water retention (1486 wt%) and high viscosity (14200 cPs), positioning it as a promising functional food with notable health benefits. FTIR spectra confirmed characteristic glucose and mannose groups in PGM, validating its purity. Ethanol precipitation yielded a distinct scale-like morphology, signifying high purity. XRD analysis revealed PGM’s relatively high crystallinity (20.7%), emphasizing its refined structure. Moreover, a hydrogel was successfully synthesized from PGM via physical cross-linking, forming a three-dimensional structure capable of binding and trapping water molecules. Increasing PGM concentration from 3 to 10% resulted in a hydrogel with a firmer physical structure. Microscopic examinations and texture profile analysis showed a denser surface morphology and smaller pore size, suggesting potential benefits for controlled drug release in functional food applications. This study highlights PGM as a versatile ingredient with structural integrity and functional properties suitable for diverse food and pharmaceutical applications. © Association of Food Scientists & Technologists (India) 2025.
Research Group of Physics and Technology of Advanced Materials, Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesha No. 10, Jawa Barat, Bandung, 40132, Indonesia; Bioscience and Biotechnology Research Center, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung, 40132, Indonesia; Collaboration Research Center for Advanced Energy Materials, National Research and Innovation Agency– Institut Teknologi Bandung, Jalan Ganesha 10, Bandung, 40132, Indonesia; Department of Pharmaceutics, School of Pharmacy, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung, 40132, Indonesia; Department of Physics, Faculty of Sciences, Institut Teknologi Sumatera, Jl. Terusan Ryacudu, Lampung, 35365, Indonesia; Center of Green and Sustainable Materials, Institut Teknologi Sumatera, Jl. Terusan Ryacudu, Lampung, 35365, Indonesia
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