[Study on viscosity property of gastrointestinal mucus]

To probe further into the viscosity of gastrointestinal mucus, the samples of gastrointestinal mucus were taken from fifty normal people and were tested with Low-Shear 30 viscometer, and then the viscosity model was obtained. The results indicated that the apparent viscosity of large intestine mucus is greater than that of small intestine and stomach. The gastrointestinal mucus is a kind of non-Newtonian fluid when its apparent viscosity rapidly decreases with the increase of shear rate. When the shear rate increase well enough, the apparent viscosity of gastrointestinal mucus becomes a constant, and the gastrointestinal mucus appears to be a Newtonian fluid.