What is konjac?

Release date:

2025-10-29

Konjac, also known as konnyaku, is a perennial herbaceous plant belonging to the Araceae family. It has a long history of cultivation in southwestern and central-western regions of China. The primary component of konjac is glucomannan (KGM), a polysaccharide formed by glucose and mannose residues linked via (1→4) glycosidic bonds in a 1:1.6 ratio. With a molecular weight ranging from 200,000 to 2 million Daltons, konjac is a low-calorie, low-protein food rich in dietary fiber. It’s also packed with over ten essential amino acids and trace elements vital for human health. Moreover, konjac boasts a variety of unique physicochemical properties, including water solubility, thickening, stabilizing, suspending, gelling, film-forming, and binding capabilities. This makes it not only a natural health-promoting food but also an ideal ingredient for various food applications. Konjac is widely utilized across multiple industries, including food, pharmaceuticals, chemical manufacturing, environmental protection, and personal care products. In the food sector—particularly in the European and American food industries—konjac serves as a crucial stabilizer, thickener, emulsifier, and quality enhancer, especially in meat products, canned goods, and pasta-based items. Meanwhile, in Southeast Asian countries, it’s commonly incorporated into jellies and gourmet dishes. Currently, konjac is recognized as one of the finest soluble dietary fibers available, and its versatile applications are increasingly gaining attention from the scientific community, leading to its widespread adoption in the food industry. Konjac gum itself appears as a pristine white powder with fine, uniform particles, typically passing through a mesh size of 120–200. It exhibits exceptional viscosity, dissolves rapidly, and maintains high transparency, resulting in a uniformly clear aqueous solution that remains stable even under varying conditions. Additionally, konjac gum boasts an impressive swelling capacity—expanding more than 100 times its original volume—while completely free from the characteristic fishy odor often associated with konjac. The production process begins with high-purity konjac flour as the raw material. Using edible alcohol as a carrier, advanced biotechnology combined with cutting-edge equipment and meticulous craftsmanship enables multiple rounds of soaking and extraction. This method effectively removes impurities such as starch, ash, cellulose, pigments, and alkaloids, leaving behind a highly concentrated glucomannan product with a dry-basis content of 80% to 95%. As a result, the final konjac gum is a pure, all-natural, high-grade colloid, produced entirely without the use of any chemical additives, ensuring both superior quality and unmatched purity.