Victor Zhenquan OngTa Yeong WuCornelius Basil Tien Loong LeeNicholas Wei Ren CheongKatrina Pui Yee Shak2025-01-092025-01-092019-1110.1016/j.ultsonch.2019.05.015https://dspace-cris.utar.edu.my/handle/123456789/10933Sequential ultrasonication and deep eutectic solvent pretreatment to remove lignin and recover xylose from oil palm frondsjournal-article