β galactosidase

Pectinase, cellulase, β-galactosidase, dextranase, β-mannase, and standards for maltose (purity ≥98%), maltotriose (purity ≥98%), malttetraose (purity ≥97%), and maltpentaose (purity ≥7%) were products of Beijing Solarbio Science & Technology Co., Ltd. (Beijing, China). D-glucose standard (purity ≥98%) was obtained from Sichuan Weikeqi Biotechnology Co., Ltd. (Chengdu, China). Moreover, 8-aminonaphthalene-1,3,6-trisulfonic acid (ANTS) was purchased from Meryer (Shanghai, China) Biochemical Technology Co., Ltd. (Shanghai, China). Aβ_25–35 and dimethylsulfoxide (DMSO) were obtained from Sigma-Aldrich (St. Louis, MO, USA). Fetal bovine serum (FBS) was obtained from Gibco (Burlington, ON, Canada), Annexin V-APC/PI and Hoechst33342/PI dual staining kits were from Jiangsu KeyGEN BioTECH Co., Ltd. (Nanjing, China), Dulbecco’s modified Eagles medium (DMEM) cell culture medium was purchased from Procell Life Science &Technology Co., Ltd. (Wuhan, China). Trypsin-EDTA from Hyclone Laboratories (Logan, UT, USA). Detection kits for ROS, SOD, LDH and MDA were purchased from Nanjing Jiancheng Bioengineering Institute (Nanjing, China). TRIzol reagent and the RevertAid First Strand cDNA Synthesis Kit was purchased from Thermo Fisher (Waltham, MA, USA).