Modified soybean protein empty capsule material and preparation method thereof

The invention relates to a medical polymer material, in particular to a modified soybean protein empty capsule material and a preparation method thereof and belongs to the technical field of pharmaceutic adjuvants. The modified soybean protein empty capsule material comprises components in parts by mass as follows: 60-85 parts of modified soybean protein, 10-35 parts of edible colloid, 0.5-2.0 parts of an emulsifier and 0.5-2.0 parts of a cross-linking agent. The modified soybean protein empty capsule material has the advantages that the modified soybean protein empty capsule material has an excellent film-forming property; compared with a conventional plant capsule material, the modified soybean protein empty capsule material doesn't contain any animal gelatin additives, is safer and more reliable and is incomparable to other materials used for preparing empty capsule. Besides, all kinds of soft or hard capsule prepared from the modified soybean protein empty capsule material serving as a pharmaceutic adjuvant have stable performance, low cost and no side effect, the efficacy of a drug cannot be affected, the material has excellent adaptability to conventional capsule equipment, special equipment modification or addition is not required, and the application potential is huge.