I am going to isolation essential oil from C.mangga and still confused about the method? Is there any difference if I use laboratory and commercial tools to isolation.
Thanks for your consideration to answer my question... And what is standard extraction procedure for phenolic compounds specially curcuma genus?
Hydro distillation with Clevenger trap is used for the extraction of volatile oil(essential oil) and steam distillation is used in Industries for the isolation of volatile oil. The advantage of steam distillation is that the plant material can be recovered after oil extraction for solvent extraction for the isolation of other non volatile compounds whereas in hydro
distillation the plant material is continuously boiled and not possible to recover. For large scale distillation handling of water is also not convenient. Recovery of oil is higher in hydro distillation compared to steam distillation.
Steam distillation has an advantage over hydro-distillation because the plant material to be distilled does not come in contact with water, so there is little possibility for the hydrolysis of compounds such as esters/adehydes which could occur in hydro-distillation. However, for laboratory extraction of essential oils, many reseachers prefer hydro-distillation with Clevenger apparatus because it is easier to operate. Hydrolysis can be overcome if the contact time of EO and water is shortened..
it all depends on the finality of the operation. If you want to have commercial grade, steam distillation is the regular way, so you will be able to compare with normalized process (there are iso norms for essential oil extraction, though C. Mangga is not this common.
In this case, do not forget that the vegetal amtter must be heated, generally by the way of a double enveloppe where steam circulate without touching the plants. If not, the steam will condensate on and in the vegetal matter and hydrodistillation will happen.
Most of the answers you received have the information you need.
But, for any case, I am sending you in attach a quick search about the articles I could obtain from Scifinder (CAS services) about the topic. If you need a copy of any (or all) of them, please contact me.
Regards
Thank you for help Mr. Eduardo. I really hope you might send copy this journal wong et al 1999. Thank you for your consideration
I am afraid this paper is not available from our institution, I used to receive JEOR in paper in the past. So, probably I had this issue in particular. But I am out of my country at present, I hope I could send a copy, if I have it, next week
Method of distillation influences the yield and composition of the essential oil. You may read some of my papers on the subject. They are available for downloading from Researchgate. I am attaching my latest paper on the subject.
Dear Sari Shara
A similar question was asked by Vinesh Kumar (on different methods of isolating essential oil ) and several researchers responded with diverse techniques. You may scan through the responses for possible leads for your work.
Clevenger hydro-distillation is a laboratory technique incorporating cohobation or recycling of distillation water during distillation. The small amount of biomass is immersed in water during distillation. A portion of the water-soluble components are recovered in this method, while in steam distillation this fraction is lost.
Steam distillation is generally carried out in large field distillation units consisting a boiler (for steam generation), a distillation tank for loading the biomass, a condenser for condensing steam and essential oil vapors into water and essential oil and a collecting vessel to collect the distilled water and essential oil. Steam distillation equipment can be designed for laboratory scale distillations also. In steam distillation, steam generated in a boiler is passed through the plant biomass. Steam volatilizes the oil. Steam and oil vapors are condensed in the condenser and collected in the collecting vessel.
Although steam distillation is the most well-known technique for extracting essential oil from plants, there are several other methods that are used to remove and concentrate the aromatic constituents from plant materials. The attached file may provide you a detailed information on this aspect.
Dear Shara
If you are still searching for a suitable method, follow this thread:
https://www.researchgate.net/post/What_are_the_techniques_used_for_the_extraction_of_essential_oils_from_a_plant
Mr. Eduardo, I am still waiting the journal that you had mentioned above..please contact me or send it to my email as soon as possible [email protected] ....thanks
Clevanger is a pharmacopoeial apparatus, the water circulates in a closed circuit until maximum extraction of the essential oil in the water vapor, while the second apparatus , the condensed water is recovered in a test tube and does not return in contact with biomass
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