GeXian rice is a multicellular algae, generally spherical, a few oval, long or gourd-shaped, belonging to the genus Nostoc, candidae (Nostoceae), segmented species (Hormogonales), cyanoanoheae (Cyanophceae), cyanophyta (Cyanophyta), prokaryotic (Drocaryotae), which is related to the ground fungus (N. Commune) and N. Flagelliforme) belongs to the same family and can be eaten, and the diameter of GeXian rice cultivated under constant light and constant temperature conditions in the room can reach a larger diameter (it has been reported in the literature that the diameter of the Ge Xian rice population can reach up to 5 cm). The origin of Gexian rice is mainly concentrated in the rice fields within the scope of Zoma Town, Hefeng County, Hubei Province, and traces of Gexian rice have also been found in Hunan, Guizhou, Guangdong and other places. Within Hefeng County, the longitude of gexian rice is located at 110 degrees 38 minutes east longitude and latitude is located at 29 degrees 38 minutes north latitude. The average annual temperature of Hefeng County is about 12.2 °C, the highest temperature in summer can reach 35 °C, and the lowest temperature in winter can drop to -14.5 °C; the average annual precipitation is 1934mm; the local rainfall in Hefeng County is mainly concentrated in April to October every year, of which april to October precipitation accounts for 83% of the annual precipitation; the distribution of Gexian rice in the Zoumazhen area is extremely important to the water it irrigates. The pH value suitable for the growth of Gexian rice roughly ranges from 6.2 to 6.3. Further studies found that the phosphorus content in the water with a wide distribution of Gexian rice was much higher than that in the water source that did not grow Gexian rice.
Ge Xian rice as a chinese medicine and dish has a large number of historical evidence: according to the "National Compilation of Chinese Herbal Medicine": Ge
Senmi has a light taste and is cold, and can treat a variety of diseases. Gexian rice can be eaten in soup, soup, cold mix, steaming, stir-frying and other methods. Gexian rice has rich nutritional value, high medicinal and biological activities and cause scientific research work
of the value. The active ingredients in GeXian rice have immune, hypoglycemic, anti-tumor, antiviral and other effects, and have good clinical applications. The natural product samples of Ge Xian Rice can be isolated by hot water to obtain extracellular polymers (EPS), and the main monosaccharide components of Ge Xian Mi are xylose, galactose and glucose Molar ratio of about 1:1:2, and 15% mannose. Cultured Gexian rice contains glucose, galactose, xylose, algae, and mannose. While studying the extraction of Gexian rice polysaccharides, the deep processing of Gexian rice has also made progress.
At present, Gexian rice products are mainly artificially farmed Gexian rice and wild Gexian rice, of which artificially farmed Gexian rice is mostly concentrated in Hunan, Guizhou, Hubei and other regions, and wild Gexian rice is mostly concentrated in Hubei Zoma Town.
Gexian rice products are mainly used in cosmetics, catering, food processing industry, medicinal and health care products, artificially farmed Gexian rice group shape is spherical, oval, and wild Gexian rice is mostly flake, spindle-shaped.