Onions are found generally in three distinct colors; red, white and slightly yellow. In India, it is cultivated and grown throughout the year, but those onions grown during the time period from April to September, is only used for the extraction of oleoresin. The onion bulbs are processed by the solvent extraction process for onion oleoresins. It has its own importance in medicines and curing diseases.
Volatile oil, menthanol
Onions are used in daily cooking in most of the houses. It is a natural blood cleanser and improves the immunity. It has a sweet aromatic taste and is helpful in the treatment of fever, cold, cough, pain and likewise some other disorders. Generally, onion oleoresin has great use in cooking and food industries to bring taste and special aroma.