Fagopyrum esculentum Moench plant benefit

The crop plant, common buckwheat, is known by the botanical name Fagopyrum esculentum. Buckwheat is also the common name of plants in different genera such as the Eurasian genus Fagopyrum, and the North American genus Eriogonum.
   This grain has important substances including quercetin and myricetin.

Studies
Level of Catechin, Myricetin, Quercetin and Isoquercitrin in Buckwheat (Fagopyrum esculentum Moench), Changes of Their Levels during Vegetation and Their Effect on The Growth of Selected Weeds.
J Agric Food Chem. 2009 Mar 2. Kalinova J, Vrchotova N. Faculty of Agriculture, University of South Bohemia, Studentska 13, 370 05 Ceske Budejovice, Czech Republic, and Laboratory of Environmental Analytical Chemistry, Institute of Systems Biology and Ecology, Academy of Sciences of the Czech Republic, Branisovska 31, 370 05 Ceske Budejovice, Czech Republic.
Fagopyrum esculentum is well-known as a crop rich in flavonoids, however, attention has usually only been paid to the main flavonoid rutin as an important natural antioxidant or as a possible allelopathic compound. Therefore, some of the other constituents found within individual plant parts of buckwheat (isoquercitrin, quercetin, catechin, and myricetin), as well as changes of their level during the growing season, were determined by HPLC analysis. The effects of these compounds on plant growth were proved on seven plant species. In buckwheat, isoquercitrin represented the largest component of the selected compounds. The strongest inhibitive effects on the growth of those selected plants were produced by catechin. Quercetin and isoquercitrin had weak inhibitive effects. Myricetin did not show any influence on plant growth. Hence we suppose that myricetin, isoquercetin and quercetin do not have important function in allelopathy of Fagopyrum esculentum. Fagopyrum esculentum as row material for functional foods could be a significant source of another antioxidant, isoquercitrin.

Allergy
Seven Chinese patients with buckwheat allergy.
Am J Med Sci. 2010 Jan;339(1):22-4. Rui T, Hongyu Z, Ruiqi W.Department of Allergy, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China.
Buckwheat is an important crop in China and is also known as an important potent allergen in the population. Here, we report a series of 7 Chinese patients with buckwheat allergy, which has never been reported previously in China. Mean age was 20 years at diagnosis. Patients' symptoms were respiratory, gastrointestinal, cutaneous, and anaphylactic. The routes of exposure were varied. Laboratory allergy test showed that buckwheat-specific IgE levels in all patients were remarkably elevated. Allergen avoidance was the best treatment in these cases. The data suggest that buckwheat can induce various clinical manifestations. Anaphylaxis might be characterized by severe symptoms. Buckwheat pillow is an important source of exposure to buckwheat in China and other Asian countries.

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