Search results
Results from the WOW.Com Content Network
Cymbopogon citratus, commonly known as West Indian lemon grass [2] or simply lemon grass, [3] is a tropical plant native to South Asia and Maritime Southeast Asia and introduced to many tropical regions. [1] Cymbopogon citratus is often sold in stem form. While it can be grown in warmer temperate regions, such as the UK, it is not hardy to frost.
Citronella grass (Cymbopogon nardus and Cymbopogon winterianus) grow to about 2 metres (6 + 1 ⁄ 2 ft) and have magenta-colored base stems.These species are used for the production of citronella oil, which is used in soaps, as an insect repellent (especially mosquitoes and houseflies) in insect sprays and candles, and aromatherapy.
Ethanol extracts from dry materials are called tinctures, while ethanol washes for purifying oils and concretes are called absolutes. The impure substances or oils are mixed with ethanol, which is less hydrophobic than solvents used for organic extraction, dissolves more of the oxidized aromatic constituents ( alcohols , aldehydes , etc ...
The field-dried leaves, stalk, and seed pod are then used in commercial manufacture of morphine or other poppy-alkaloid derived drugs, by first processing the material, separating the seeds, and then making concentrate of poppy straw [2] where no extraction using the traditional methods of latex extraction has been made. [3]
Dried fruit is fruit from which the majority of the original water content has been removed, either naturally, through sun drying, or through the use of specialized dryers or dehydrators. Dried fruit has a long tradition of use dating back to the fourth millennium BC in Mesopotamia , and is prized because of its sweet taste, nutritive value ...
Vacuum drying is the mass transfer operation in which the moisture present in a substance, usually a wet solid, is removed by means of creating a vacuum.. In chemical processing industries like food processing, pharmacology, agriculture, and textiles, drying is an essential unit operation to remove moisture. [1]
The spray drying technique was first described in 1860 with the first spray dryer instrument patented by Samuel Percy in 1872. [citation needed] With time, the spray drying method grew in popularity, at first mainly for milk production in the 1920s and during World War II, when there was a need to reduce the weight and volume of food and other materials.
An extract (essence) is a substance made by extracting a part of a raw material, often by using a solvent such as ethanol, oil or water. Extracts may be sold as tinctures or absolutes or dried and powdered.