Potassium bromide

Cocoons of silkworm Bombyx mori (a Chinese strain demoted as 872) were provided by College of Biotechnology, Southwest University, China. Sodium carbonate and sodium biphosphate dihydrate were purchased from KeLong Chemical Reagent Co., Ltd. (Chengdu, China). Sodium dihydrogen phosphate was purchased from Fangzheng reagent Co., Ltd. (Tianjin, China). Calcium chloride was purchased from Yuanye Bio-Technology Co., Ltd. (Shanghai, China). Curcumin (Cur) was purchased from BBI Life Sciences (Shanghai, China). Ethanol was purchased from Chuandong Chemical Co., Ltd. (Chongqing, China). Potassium bromide was purchased from Sangon Biotech Co., Ltd. (Shanghai, China). Simulated body fluid (SBF) was purchased from Beijing Leagene Biotechnology Co. Ltd. (Beijing, China). Dulbecco’s modified Eagle’s medium (DMEM/HG), PBS (1×), and Penicillin Streptomycin 100× solution were purchased from Hyclone (Logan, UT, USA). Fetal bovine serum (FBS) was purchased from Tianhang Biotechnology Co., (Zhejiang, China). All chemicals are analytical grade and used without further purification. Ultrapure water (resistance > 18 MΩ·cm⁻¹) was used in all experiments.

The silkworm strain used in the experiment was Bombyx mori (871 × 872), sourced from the Chongqing Sericulture Science and Technology Research Institute (Chongqing, China). Ammonium molybdate tetrahydrate (AMT) was purchased from Shanghai Darui Fine Chemical Co., Ltd. (Shanghai, China); sodium chloride was purchased from Shanghai Aladdin Bio-Chem Technology Co., Ltd. (Shanghai, China); nitric and perchloric acids were purchased from Beijing Institute of Chemical Reagents (Beijing, China); sodium carbonate and ethanol were purchased from Chongqing Chuandong Chemical Co., Ltd. (Chongqing, China); potassium bromide was purchased from Sangon Biotech Co., Ltd. (Shanghai, China); hematoxylin and eosin (H&E) staining kits were purchased from Nanchang Yulu Experimental Equipment Co., Ltd. (Nanchang, China); dimethylbenzene and poly (tetrafluoroethylene) were purchased from Shanghai Macklin Biochemical Co., Ltd. (Shanghai, China); Super P was purchased from Canrd New Energy Technology Co., Ltd. (Guangzhou, China); and foam Ni was purchased from Taiyuan Lizhiyuan Co., Ltd. (Shanxi, China). All chemicals were of analytical grade and used without further purification. The deionized (DI) water used in this work was produced using a Milli-Q Direct-8 purification system (resistivity >18 MΩ cm, Millipore Inc., France) onsite.

Carboxymethyl chitosan (CMCS) was purchased from Shanghai Ryon Biological Technology CO., Ltd. (Shanghai, China). Silk sericin (SS) was from Langzhong Silkworm Breeding Farm of Sichuan Province (Sichuan, China). Sodium chloride was purchased from Aladdin Biotech CO., Ltd. (Shanghai, China). Potassium bromide was purchased from Sango Biotech Co., Ltd. (Shanghai, China). Bradford assay kit was purchased from Beyotime Biotechnology Co., Ltd. (Shanghai, China). Sodium hydroxide was purchased from Jinshen Chemical Test Co., Ltd. (Chengdu, China). Hydrochloric acid was purchased from Chuandong Chemical Co., Ltd. (Chongqing, China). Cell Counting Kit-8 (CCK-8) was purchased from Mei5 Biotechnology Co., Ltd. (Beijing, China). Trypan blue was purchased from Macklin Biochemical Co., Ltd. (Shanghai, China). The filter membrane with a pore size of 0.22 μm was purchased from Jiangsu Green Union Science Instrument Co., Ltd. (Jiangsu, China). All chemicals were of analytical grade and were used without further purification. Deionized water was obtained from a Milli-Q Direct-8 purification system (resistivity >18 MΩ·cm, Millipore Inc., Boston, MA, USA) onsite and was used in all experiments.