Konjac contains glucomannan, which is a polymer compound with strong water absorption. After absorbing water, its volume can expand by 80- 100 times, and it is easy to digest and absorb after eating. It can also adsorb cholesterol and bile acids, which has a certain effect on lowering blood pressure and reducing cardiovascular diseases. Amorphophallus konjac also contains soluble dietary fiber, which is very effective in inhibiting the increase of blood sugar after meals, so konjac refined powder and its products are ideal hypoglycemic foods for diabetic patients. After use, it can reduce the burden of islets. Konjac glucomannan can't be degraded into monosaccharide absorption in the small intestine because its monosaccharide bonding mode is similar to cellulose, so it is suitable for people who can't eat too much sugar, such as diabetics. Because of this, konjac can be used as the raw material of diet food.

The magic of konjac is welcomed by everyone because of its low calorie, and because it contains a special ingredient: glucomannan, which can expand 20- 100 times after entering the stomach, which can produce satiety and help to lose weight. This is a good diet food. Amorphophallus konjac is a low-calorie food, and the glucomannan contained in it will absorb water and swell, which can be increased to 30 ~ 100 times of the original volume, so it feels full after eating, which can be used to treat diabetes and is also an ideal diet food. The same is grape mannan, which has strong water absorption and low calories, and can increase satiety, reduce hunger and lose weight.