Spanish onion
Spanish Onion cultivated in Castilla La Mancha.
The onions cultivated in Castilla La Mancha represent a variety of onion with the highest quality within the Spanish market. The 53% of the total production of onion in Spain is cultivated in this region.
Onion and other Allium vegetables are characterized by their rich content of thiosulfinates, sulfides, sulfoxides, and other odoriferous sulfur compounds. The cysteine sulfoxides are primarily responsible for the onion flavor and produce the eye-irritating compounds that induce lacrimation. The thiosulfinates exhibit antimicrobial properties. Onion is effective against many bacteria including Bacillus subtilis, Salmonella, and E. coli. Onion is not as potent as garlic since the sulfur compounds in onion are only about one-quarter the level found in garlic.
Onions, and other Allium species, are highly valued herbs possessing culinary and medicinal value. Some of their beneficial properties are seen after long-term usage. Onion may be a useful herb for the prevention of cardiovascular disease, especially since they diminish the risk of blood clots. Onion also protects against stomach and other cancers, as well as protecting against certain infections. Onion can improve lung function, especially in asthmatics. The more pungent varieties of onion appear to possess the greatest concentration of health-promoting phytochemicals.
Main Active Components
- Amino-acids: Glutamic acid, arginine, lysine, glycine… etc.
- Minerals: Mainly potassium, phosphorous, calcium, manganese, sodium, sulphur and, in less quantity, iron, manganese, zinc, copper and selenium.
- Vitamins: Vitamin C, Folic acid, Vitamin E
- Essential oil with many sulphurous components.
- Quercetin: Used in the hear treatments to help for preserving it.
- Allicin, but in less quantity than in garlic.
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