< Back to Newsletters

Lemon-Scented Tea Tree

Lemon-Scented Tea Tree


Dear Friends,

Here is another monograph on an oil which is not that well known. I recently got several kilos of this material from South Africa.

Lemon Scented Tea-Tree (Oil of Leptospermum Petersonii):

The name Leptospermum originates from the Greek "leptos" - fine or slender; and "sperma" - a seed.

Synonyms for the species-
L. flavescens var. citratum
L. citratum
Place of origin
South Africa, New South Wales, Queensland

Description
Rounded shrub to 4 m high by 3 m across. Leaves are narrow-lanceolate, to 4 cm, and strongly lemon-scented. White flowers, 1.5 cm in diameter, occur in spring and early summer.

Description of Plant: Rounded shrub to 4m high by 3m in width. Leaves bright green, narrow-lanceolate to 4cm with a strong lemon or citronella scent (depending on chemotype) In summer white 1.5cm (sometimes pale pink) flowers appear. The species is well known in cultivation as a street tree in mild to warm climates. For oil production plants are cut off approx. 30cm above ground once they reach 1.5m in high (usually within 18mths of planting) to assist with soft regrowth. This technique is called coppicing and is used with many native species to encourage multistem regrowth with minimal deadwood.
http://www.bush-sense.com/profile.html

Images
http://www.anbg.gov.au/leptospermum/leptospermum-petersonii.html
Leaves and flower
Harvest Season: From December to March.

Production method
Steam distilled from the leaves and twigs of Leptospermum Petersonii.


Aroma
Very fine, delicate and sweet lemon-roseaceous topnote. Fresh and clean wholesome aroma. As the topnote melds into the heart note a more penetrationg, slightly punguent herbaceous, lemon-lime like odor appears. A combined lemon verbena/citronella/lemongrass type of aroma which is to say grassy, leafy and citrus peel like. The sweet delicate topnote impression remains present well into the heartnote. It is a sparkling effervescent oil. This is definitely an oil of unexpected delights. The distillation is excellent(we should not forget that the distiller plays a critical part in the beauty of any oil. I have found Clive Teubes oils to be consistently of high quality in that regard

Main uses
Perfumery, cosmetics

Uses: Can be used as fragrance raw material. The odour has been described as a strong, pleasant lemon odour with a delightful fresh rosy tone which is particularly persistent on dry-down. In 1929 the "Perfumery and Essential Oil Record" suggested its use as a base for citrus compositions or as a toner and modifier of Rose Compositions. It was suggested to be an ideal replacement for more expensive Verbena Oil.

To improve the odour of Tea Tree Oil, Melaleuca alternifolia . Around 5% can be added to give a noticeable improvement in the odour . When up to 20% is added there is an increased activity against Staphlococcus aureus when compared with Pure Tea Tree Oil.

As a cosmetic preservative. It has been shown to be effective as a preservative in shampoo at 1%.


Blending suggestions
Blends well with other Australian EO's. Some suggested blends you might like to try include:
1 part rosalina, 2 parts rose geranium, 1 part lemon tea-tree
1 part lemon tea-tree, 2 parts rosalina, 1 part nerolina
1 part lemon tea-tree, 1 part Eucalyptus radiata
3 parts lemon tea-tree, 1 part Eucalyptus radiata, 1 part patchouli (insect
repelling blend)
3 parts niaouli, 2 parts lemon tea-tree, 1 part lemon-myrtle
3 parts rosalina, 1 part lemon tea-tree, 1 part blue cypress
http://www.soap.it/eos/lemonttree.html
 

GC Analysis on this particular batch of Organic Lemon Tea Tree from South Africa.
Please note that there were many many more peaks but only the ones listed below were identified. It is quite an expensive proposition to get a more detailed gc done so I am always grateful when the distiller can provide me with any gc that has some peaks identified.
Alpha Pinene-.087527%
Odor Description : Fresh Camphor Sweet Pine Earthy Woody
Myrcene-2.0431%
Odor Description : Fresh Peppery Terpy Spicy Balsam Plastic
Aldehyde C9-1.71044%
Odor Description : Fresh Fatty Rose Orris Lily Orange Verbena
Nerol-12.37475%
Odor Description : Fresh Sweet Natural Neroli Citrus Magnolia
Neral-19.32608%
lemon odour, sweeter than geranial.
Geraniol-2.11861%
Odor Description : Sweet Rose Waxy Green Citrus With Floral Woody Nuances
Geranial-25.89086%
Strong lemon odor

Other major components of this oil identified by researchers are Citronellol, isopulegol and methyl heptenone.