Flammulina velutipes contains chitosan, which can inhibit fat absorption and reduce cholesterol and triglycerides. Bai Ze Zall, a professor of anti-aging management medicine at Sunchon University in Japan, said in his book "Longevity and Beauty" that Nakano, Japan is a famous producer of Flammulina velutipes, and the Nakano Agricultural Association initiated "Flammulina velutipes Ice Block", in which guanylic acid, the flavor source of Flammulina velutipes, was concentrated. Adding ice cubes of Flammulina velutipes to miso soup, hot pot or stir-fry can not only be used as seasoning, but also inhibit bad cholesterol and reduce visceral fat.
Flammulina velutipes contains chitosan which can inhibit fat absorption.
The most striking component of Flammulina velutipes is chitosan in the cell wall. Generally speaking, people think of healthy food extracted from crustaceans such as crabs and shrimps, but Flammulina velutipes not only contains chitosan, but also contains polysaccharides beneficial to human body such as β-glucan, fucose, arabinose and mannose.
One of the functions of Flammulina velutipes chitosan is that it can inhibit fat absorption. Chitosan is a kind of polymer fiber, which will not be digested and absorbed by human body. Usually, it will be combined with the ingested fat in the stomach and excreted with feces. Because the main feature of chitosan is that it contains positively charged amino groups, which is different from ordinary plant fiber or dietary fiber in neutrality or acidity, the ability of chitosan to exclude fat is 5- 10 times that of other natural cellulose.
In addition to preventing fat accumulation, it can also reduce cholesterol and triglycerides.
Chitosan can not only inhibit fat absorption, but also reduce cholesterol. Chitosan can be combined with cholic acid and bile salt, so that cholesterol can no longer be absorbed, which can effectively reduce cholesterol in blood and liver.
The ice cube experiment of Flammulina velutipes was carried out on 108 men and women in Nakano, Japan. In the experiment, according to the average weight and blood lipid concentration, Nakano citizens were divided into two groups. After taking 50 grams of Flammulina velutipes every day for three months, the triglyceride (neutral fat), low density lipoprotein (LCL) and total fat in the blood of men and women decreased compared with the control group without Flammulina velutipes.