“…Trypsin (≥280 USP • E/mg, CAS # 9002-07-7) was purchased from BioFroxx (Einhausen, Germany). Monosaccharide (mannose, rhamnose, glucuronic acid, galacturonic acid, glucose, N-acetylgalactose, galactose, xylose, arabinose, and fucose), and dextran standards (1,5,12,25,50,80,150, and 270 kDa) were purchased from Sigma-Aldrich Trading Co., Ltd. (St. Louis, MO, USA). Potassium sulfamate was purchased from Shanghai Acmec Biochemical Co., Ltd. (Shanghai, China).…”