Can anyone help me to choose the best solvent and method for seed essential oil extraction? that will be a great help if you share your experiences with me. For now extracting through Soxhlet, refluxing, and microwave is available for my experiment. I came up with using Hexane, since my target compound is non-polar but I am also thinking of reducing organic solvent usage. I'm not yet sure which method is more efficient for this purpose.
Thank you in advance
From my knowledge, According to ISO, hydrodistilled or Steam distilled oils from plant parts and cold pressed oils for Citrus are called essential oil. So if you are using Soxhlet or any other extraction method by using solvent then it is not essential oil. They are called extracted oil. If you need Essential oil then best way is Hydrodistillation but Being its a seed Soxlet extraction is a best choice as it contains fat. Or You can go through both processes for comparative study. Thankyou.
your solvent shois depend to polarity of your target compound, as you said that the hexane is not suitable for your molecule, so I recommend for you petroleum ether, I think it is less polar than hexane or you can you use chloroform more polar than hexane.
recent one is critical carbon dioxide extraction but it require specific instrument
Shiv Kumar Yadav Thanks for your reply. Well I don't have access to that instrument. I have to find a good solvent. But I am not convinced yet which one is better. Some resources recommend organic solvents (Soxhlet, Maceration, and reflux) but other recommend water for essential oil in hydrodistillation. So I'm confused.
Fatemeh Mashhadi Abolghasem , There are several methods for the extraction of essential oils but I will recommend Clevenger apparatus for the extraction. This apparatus is very cheap and you can easily buy the size that is suitable for your requirement. You should not use organic solvent if your focus is to obtain essential oils otherwise you will get fat and oils.
Be guided.
Ayorinde Victor Ogundele Oh I see. Thank you. So since I just need essential oil part I will use hydrodistillation using the clevenger apparatus.
Water vapor stripping method( Steam distillation ). Use water/heat only!
Guobing Xiang Oh, so steam distillation is also as effective as hydrodistillation you mean? Thanks for your reply ~ I will study about that too.
Fatemeh
Google steam distillation and hydrodistillation, I believe both are the same.
Good luck!
From my knowledge, According to ISO, hydrodistilled or Steam distilled oils from plant parts and cold pressed oils for Citrus are called essential oil. So if you are using Soxhlet or any other extraction method by using solvent then it is not essential oil. They are called extracted oil. If you need Essential oil then best way is Hydrodistillation but Being its a seed Soxlet extraction is a best choice as it contains fat. Or You can go through both processes for comparative study. Thankyou.
Sabita Dangol Thank you Sabita for your reply. Yes as you mentioned, since its a seed I have no other choice but solvent extraction. I studied lots of researches and according to them hydrodistillation will not result in essential oil extraction for this seed. I will consider comparative study though ~
Book Photochemical methods: A guide to modern techniques of plant analysis
Regards
Hi,
You may extract seed essential oil via steam distillation or ethanol extraction.
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