Enhancing Amphiphilic Properties of Glucomannan via Ultrasound-assisted Esterification using Octenyl Succinic Anhydride (OSA)Dyah Hesti Wardhani, Hana Nikma Ulya, Aprilia Dwi Susanti, Fabrina Dwi Zahra, Kurniawan Ahmad Azizi, Andri Cahyo Kumoro and José Antonio VázquezE3S Web Conf., 655 (2025) 01015DOI: https://doi.org/10.1051/e3sconf/202565501015