Some weeds - better than pharmaceutical products
About 300 annual and perennial species are classified as weeds in Bulgaria, with 100 of them being of economic value. Weeds are widely spread in crops and compete with them in regard to water, light, fertilizers, diseases and enemies. To improve yield production, weed control is effectively realized through a number of measures including mechanical soil treatment, weeding, herbicides, and integrated control systems. On the other hand, more than 83% of weeds have nowadays been revaluated because of their medicinal applications. Thanks to extensive scientific research, substances with valuable biological and therapeutic properties have been isolated in weeds and are used in treating chronical diseases, intolerance to certain medications, prevention of occupational diseases and are applied in physiotherapies and balneotherapies. This article discusses eight widely spread weeds, i.e., Datura innoxia, Silybum marianum, Tribulus terrestris, Achillea millefolium, Amaranthus sp., Portulaca oleracea, Polygonum aviculare and Cichorium intybus; various tannins, alkaloids, organic acids, flavonoids, mineral salts, microelements and vitamins have been extracted from these species and are currently used in treating gynecological, cardiovascular and skin diseases as well as diseases affecting the digestive, excretory and nervous systems, liver and gallbladder diseases, respiratory diseases, metabolic disorders and rheumatism.
Rankova, Z., Moskova, Cv. and Tityanov, M. (2019). Some weeds - better than pharmaceutical products. Acta Hortic. 1259, 155-158
pharmaceuticals, drug discovery, medicinal plants