Screening of Factors Influencing Keratinase Fermentation from Bacillus Haynesii BK1H using The Plackett-Burman Design (PBD)Isna Firli Masruroh, Eli Hendrik Sanjaya, Mieke Alvionita and Suharti SuhartiE3S Web Conf., 481 (2024) 06010DOI: https://doi.org/10.1051/e3sconf/202448106010