Optimization of Bioethanol Yield from Liquid Pineapple Waste using Immobilized Saccharomyces cerevisiae var. ellipsoideus in PVA-Alginate-Sulfate MatrixSarina Mat Rosid and Nor Azimah Mohd ZainBIO Web Conf., 189 (2025) 01021DOI: https://doi.org/10.1051/bioconf/202518901021