Abstract

Provided are a method for fabricating an integrated model of a flexible human esophagus, stomach, duodenum, and small intestine, and a dynamic in vitro biomimetic digestive system thereof. The method for preparation comprises scanning the internal and external structures of a human esophagus, stomach, duodenum, and small intestine to obtain a corresponding mold; applying a mold release agent evenly on the mold; pouring an elastic liquid material into the mold; waiting for same to cure, then releasing from the mold to separately obtain an esophagus model (a), stomach model (b), duodenum model (c), and small intestine model (d); cleaning the surfaces of same, then air-drying; using an adhesive to bond together, in sequence, the esophagus model (a), stomach model (b), duodenum model (c), and small intestine model (d) to obtain an integrated model; by means of a peristaltic pressing apparatus, applying pressure to the two sides of each of the esophagus model (a), stomach model (b), and duodenum model (c) to achieve biomimetic motion. It is thus possible to simulate the process of digestion of the human stomach and duodenum, providing accurate experimental data for research on the human digestive system while also appropriately reducing experimentation on animals and humans.

IPC Classes  ?

• G09B 23/28 - Models for scientific, medical, or mathematical purposes, e.g. full-sized device for demonstration purposes for medicine
• G09B 9/00 - Simulators for teaching or training purposes

Abstract

A protein product and an extraction method for making the protein product. Raw materials of the product optionally contains macromolecular carbohydrates and/or fat, and the method does not use organic solvents. The protein product contains prolamin and carbohydrates, wherein the prolamin accounts for 70 wt % or above of the protein (dry-basis), the α-prolamin accounts for 75 wt % or above of the prolamin, the β-prolamin accounts for 20 wt % or below of the prolamin, and the γ-prolamin accounts for 6 wt % or below of the prolamin.

IPC Classes  ?

• C07K 14/425 - Zeins
• A23J 1/12 - Obtaining protein compositions for foodstuffsBulk opening of eggs and separation of yolks from whites from cereals, wheat, bran, or molasses
• A23J 1/00 - Obtaining protein compositions for foodstuffsBulk opening of eggs and separation of yolks from whites
• A23J 3/34 - Working-up of proteins for foodstuffs by hydrolysis using chemical agents using enzymes

Abstract

Disclosed are a protein product and a preparation method thereof. Raw materials of the product include a macromolecular carbohydrate and/or a lipid, and the product does not use an organic solvent. The protein product comprises a prolamin and a carbohydrate, wherein the prolamin comprises more than 70 wt% of a dry protein content, and an α-prolamin, ß-prolamin, and γ-prolamin comprise more than 75 wt%, less than 20 wt%, and less than 6 wt% of the prolamin, respectively.

IPC Classes  ?

• C07K 14/425 - Zeins
• C07K 1/14 - ExtractionSeparationPurification
• A23J 1/12 - Obtaining protein compositions for foodstuffsBulk opening of eggs and separation of yolks from whites from cereals, wheat, bran, or molasses
• A23J 3/34 - Working-up of proteins for foodstuffs by hydrolysis using chemical agents using enzymes