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A basic introduction to konjac

Konjac is a perennial Araceae herbaceous plant with little poison. Konjac is a large family with about 130 species in the world. Konjac is currently the only cash crop that can be found to provide a large amount of glucomannan in food and medicine. The application value will be continuously developed. Konjac is generally popular because of its high edible value. Its main ingredient is glucomannan, which not only contains more than 10 amino acids and various trace elements required by the human body but also has low protein, low fat and high fiber, High water absorption, high swelling rate, and other characteristics, in terms of medicinal efficacy, it has various curative effects such as blood lipid-lowering, blood sugar lowering, blood pressure-lowering, detoxification, weight loss, beauty, health care, laxative and gastrointestinal.

In addition, konjac also has a very wide range of uses in industrial manufacturing. Some types of tubers of the genus konjac are rich in konjac polysaccharides, especially white konjac and flower konjac varieties with a content of up to 50-65%. Konjac polysaccharide, also known as konjac grape mannan, is a linear high molecular compound composed of many mannose and glucose, connected by β-1,4-glucoside health, and connected to some sugar side chains of its molecule. A certain number of acetyl groups, the molecular ratio of glucose to mannose is 1:1.5-1.7, the molecular weight can be as high as 106 Daltons, the viscosity is extremely high, it is soluble in water, and the degree of swelling in water is extremely large, with specific biological activity.

These characteristics determine the many uses of konjac polysaccharides. In addition to medicine, konjac polysaccharides have a wide range of uses in textiles, printing and dyeing, cosmetics, ceramics, fire protection, environmental protection, military industry, and petroleum exploitation. In addition, 30%-40% of flying powder is produced during the processing of Konjac powder. Since flying powder also contains a certain amount of glucomannan, flying powder is also a natural polymer compound mainly composed of polyhydroxy compounds. Like starch, it can be made into xanthate and used to precipitate soluble heavy metal ions in wastewater.

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The efficacy and role of konjac

Konjac is warm, spicy, and toxic; it can promote blood circulation and remove blood stasis, detoxification and swelling, wide bowel movement, and phlegm softening; it is mainly for embolism of phlegm, stasis, constipation, abdominal pain, sore throat, gum swelling, and pain. In addition, konjac also has the effects of calcium supplementation, balanced salt, stomach cleansing, bowel adjustment, and detoxification.

1. Lose weight

Konjac food is not only delicious and pleasant in taste, but also has the effects of weight loss, fitness, treatment, and anti-cancer, so it has become popular in the world in recent years and is known as “magic food”, “miracle food”, “healthy food” and so on.

2. Prevention of arteriosclerosis and prevention of cardiovascular and cerebrovascular diseases

The konjac taste is spicy and warm, which can promote blood circulation and prevent stasis. The mucin protein contained in konjac can reduce the accumulation of cholesterol in the body, prevent arteriosclerosis and prevent cardiovascular and cerebrovascular diseases. So konjac is called “gastrointestinal scavenger” and “blood purifier”.

3. Lower cholesterol

Konjac glucomannan can effectively inhibit the absorption of cholesterol, bile acids and other lipolytic substances in the small intestine, promote the elimination of fat from the body, and reduce the total amount of triglycerides and cholesterol in serum. Konjac is a reduce cholesterol product.

4. Improve immunity, prevent cancer and cancer

Konjac can improve the body’s immunity. The mannose contained in it can interfere with the metabolism of cancer cells. The excellent dietary fiber contained can stimulate the body to produce a substance that kills cancer cells. The drug susceptibility test is sensitive to cardia cancer and colon cancer cells. It can reduce phlegm and soften the sputum, detoxify the sputum, treat the mass, sputum nucleus, and scab, and can prevent and cure cancer.

5. Ideal food for diabetics

Konjac also contains soluble dietary fiber, which is very effective in suppressing postprandial blood sugar rise, so konjac refined powder, and its products are ideal hypoglycemic foods for diabetic patients. After application, it can reduce the burden of islets.

6. Insulation

In ancient folk remedies, the konjac was made into material for the insulation cloth. The stomachache and shoulder aches, and the steamed konjac were wrapped in a towel and placed in the affected area to relieve the pain.

The nutritional value of konjac

1. 97% of the konjac is water. The remaining 3% of the main nutrients are glucose and mannan polysaccharides, which are combined in a 1:2 ratio to form a plant fiber-konjac glucomannan.

2. There are two types of plant fiber soluble in water and insoluble in water. Konjac mannan is easily soluble in water.

3. Konjac contains lower calories and higher content of carbohydrates, calcium, phosphorus, and potassium.

The purchase of konjac

It looks close to off-white, without obvious impurities (such as black spots, small yellow particles, hair, metal debris), smells no irritating smell (preferably with the clear fragrance of the plant itself), the particles are full and uniform, Feel smooth and moist, without lumps or rubber-like particles.”

Too white konjac powder may be added with bleach.

Konjac storage

Konjac is generally put in a bag with a transparent liquid when it is sold. This konjac can keep the liquid alkaline, and the leftover konjac can be placed in an airtight container with this liquid and then stored in the refrigerator.

How to eat konjac

Raw konjac is poisonous and must be boiled for more than 3 hours before consumption, and the amount of food should not be excessive each time; konjac underground tubers can be processed into konjac powder for consumption and can be made into konjac tofu, konjac noodles, konjac bread, konjac meat slices, juice Konjac and other foods.