Preparation of Apis mellifera carboxymethylchitosan and determination of its molecular weight and degree of acetylationFeruza Kurbanova, Mahfuza Djumaeva and Gulbahor KhudoynazarovaE3S Web Conf., 460 (2023) 10029DOI: https://doi.org/10.1051/e3sconf/202346010029