Depending on the species the essential oil is stored practically in all plant parts. In some species the essential oil is stored in more than one plant part and the composition may differ e.g. cinnamon (the leaf oil contains eugenol as the major components while the bark oil contains cinnamaldehyde as the principal constituent). In some species the oil is stored in only one part e.g. vetiver roots. Within the plant or plant part, the essential oil is stored in one of these specialized structures: oil glands or glandular trichomes of diverse sizes and shapes, idioblasts, cavities, channels, heartwood (e.g. sandalwood) etc.
Thank you Dr. Rao this is valuable for me if you have other informations please send me
The names of plant organs that store volatile oil & example(s) on each:
1) Seeds: Cardamom oil, Gramis of Paradise oil
2) Rhizomes: Ginger oil, Calamus oil
3) Bark: Cinnamon oil
4) Wood: Pine oil
5) Buds: Clove oil, Chamomile oil
6) Fruits: Caraway oil
7) Flowering tops: Lavender oil
8) Leaves: Citronella oil
9) Leaves & Flowering tops: Sage oil
10) Petals: Rose oil
Dear Dr.Nizar
your examples are very clear I took them thanks alot
Check these publications:
https://books.google.co.in/books?id=2AEtSKfB2nUC&pg=PA177&lpg=PA177&dq=essential+oils+volumes+by+guenther+pdf&source=bl&ots=VyDm6e7OTT&sig=ujdfpYCBMey5gZdwCH1MzXSD-gU&hl=en&sa=X&ei=fYtxVca-OtLjuQT7hYPABA&ved=0CCIQ6AEwATgK#v=onepage&q&f=false
Check this link for beautiful pictures of essential oil storing oil glands:
https://www.google.co.in/search?q=Structure+of+essential+oil+glands&rlz=1C1SNNT_enUS355US355&espv=2&biw=1600&bih=799&tbm=isch&imgil=TTxJ7XFaZU4RxM%253A%253BO26pqiroBYC8rM%253Bhttp%25253A%25252F%25252Fwww.komehsaessentials.com%25252Fessential-oil-glands.html&source=iu&pf=m&fir=TTxJ7XFaZU4RxM%253A%252CO26pqiroBYC8rM%252C_&usg=__IohUabMD3EcBugN9JnYfKJsiMAo%3D&ved=0CCYQyjdqFQoTCJn606eEh8YCFcPnpgodVZwAmg&ei=ZS15VdmzKsPPmwXVuILQCQ#imgrc=TTxJ7XFaZU4RxM%253A%3BO26pqiroBYC8rM%3Bhttp%253A%252F%252Fwww.komehsaessentials.com%252Fuploads%252F1%252F0%252F9%252F8%252F10984583%252F2293372.jpg%253F846%3Bhttp%253A%252F%252Fwww.komehsaessentials.com%252Fessential-oil-glands.html%3B846%3B848
Here is an interesting publication on secretory cells of aromatic plants:
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