Selective Microcrystalline Cellulose Extraction from Chinese Medicine Residues via Direct PMS Oxidation

• DOI: 10.1016/j.eng.2024.03.008
• Publication Date: 2024-04-05T23:16:30Z
• Authors: Jinjing Huang; Xia Liu; Kaixing Fu; Shengyun Yang; Shiqing Zhou; Jinming Luo
• Keywords: Microcrystalline

The valorization of Chinese medicine residues (CMRs) into high-value-added products, such as microcrystalline cellulose (MCC), has garnered significant interest in the current post-pandemic era, particularly regions where (CM) is widely utilized (i.e., Southeast Asia). In this study, we propose a facile and economical protocol for selectively extracting MCC from CMRs via one-step direct peroxymonosulfate (PMS) oxidation without need intricate steps. Importantly, our proposed been verified to be versatile can applied various solid waste sources rich cellulose, with an average extraction rate 75%. Analysis using Fukui index revealed that β-O-4 bond, aromatic ring lignin, specific O sites hemicellulose, amorphous region are more susceptible electrophilic attack by PMS than reactions involving HO•, SO4•−, or 1O2. Leveraging distinct mechanism, extracted demonstrated ultrahigh purity (∼95%) crystallinity (∼85.36%). Overall, work involves transforming high-value products through provision technical solution, potential onsite application. This represents advancement CMRs, providing theoretical guidance accelerating recycling materials.