How is lemongrass processed?

Lemongrass oil is collected by distillation unit of the herbage for 1.5 to 2 hrs. The distillate on cooling separates out into a layer of oil, floating over the bulk of water which is composed by decantation. The lemongrass is distilled either fresh or after wilting.

How do you extract essential oils from lemongrass?

Currently, the most popular method for the extraction of the lemongrass essential oil is steam distillation. It is main- ly used for temperature-sensitive materials like oils, resins, hydrocarbons, etc. which are insoluble in water and may decompose at their boiling point.

Can lemon grass be used for steaming?

Starting with clean skin – prepare the steam. Slice the fresh lemongrass into a bowl and pour over hot water from the kettle. Place your head over the bowl with a towel draped over to trap in the steam. Breathe in and relax – steaming for 5 minutes.

What does steam distillation do?

Steam distillation is a process used for the recovery of volatile compounds with a high boiling point, from inert and complex matrices, solid or liquid, using saturated or superheated steam as separation and energy agent (Cerpa et al., 2008).

How do you extract citral from lemongrass?

In this research, a steam-water distillation technique was applied to extract the essential oil from the lemongrass. The effects of sample particle size and bed volume on yield and quality of citral oil produced were investigated. The drying and refining time of 2 hours were used as fixed variables.

Can you transplant lemongrass?

Lemongrass is planted from transplants, either purchased or overwintered, in summer after all danger of frost has passed. In its perennial hardiness zones, lemongrass requires digging, dividing and transplanting every two years or when the clump becomes too large for the site.

What are the factors influencing the oil production during distillation in lemongrass?

In this research, we investigated the parameters that affect the extraction of lemongrass oil process by MAHD method and compare with those of hydro-distillation (HD) method. Four parameters were identified which are: raw material size, raw material to water ratio, extraction time and microwave power.

Can lemongrass be blended?

Trim the ends of the lemongrass and remove the tough outer layers. Thinly slice the remainder and place in a blender. Grate the zest from the orange and squeeze the juice. Add to the blender and blend until the lemongrass is finely chopped.

How do you use lemon grass plant?

To use lemongrass in cooking, remove outer leaves and cut off the roots of the lemongrass. Upper green stalks are often what is used in tea. Use the tender section of lemongrass by chopping well (use a food processor) and cooking before eating.

What are the disadvantages of steam distillation?

Disadvantages: More time consuming due to due to the low pressure of rising steam. Water on the substance to be distilled causes it to vaporize in delayed time [10].

What is maximum temperature needed for steam distillation?

100° C
Temperatures required for optimal steam distillation typically fall between 140° F and 212° F (60° C and 100° C). One benefit of steam distillation is that the temperature can be continuously adjusted and precisely controlled to ensure that the system always remains within the optimal temperature range.

How to improve steam distillation of lemongrass oil?

For intimate contact of lemongrass and steam, two improved direct steam spargers were provided in these units. It is observed, that, the loose packing of plant material inside distillation still and steam injection rate, increases the oil yield.

How is the extraction of lemongrass oil done?

The extraction of lemongrass oil is done by a steam distillation process.

What happens when you boil lemongrass?

When the water level reached 100°C it started boiling ripping off the essential oil from the lemongrass. When the lemongrass got heated up, the lemongrass essential oil that was extracted from the leaf mixed with the water vapor. Both passed during the condenser and the vapor was condensed into a liquid.

How to increase the yield of lemongrass extract?

Extraction yield increase by decreasing the particle size due to the higher amount of lemongrass oil released as the leave cells are destroyed by milling. In order to develop the collection efficiency, the plant material was soaked in its distilled water for 30min before the extraction performed.