• Eucalyptus Citriodora
  • Eucalyptus Citriodora

Eucalyptus Citriodora

  • Scientific Name
    Corymbia citriodora
  • Family
    Myrtaceae
  • Origin
    China, Brazil, India, Guatemala, Kenya etc.

CONTENTS

Plant description

Eucalyptus Citriodora belongs to the Myrtaceae family and grows up to approximately 45 meters. Its lanceolate leaves are arranged alternately and are distinctive among eucalyptus species for their lemon-like fragrance rather than the typical medicinal aroma. This unique scent has earned its nickname  “lemon eucalyptus.” The bark is white, light gray, or light coral in color. Eucalyptus buds are notably well-sheltered, which is believed to be the etymological origin of the Greek words “eu-” meaning “well” and “kalyptós” meaning “covered,” forming “well-covered.” Eucalyptus is renowned for its vast number of species, with the most common variety being Eucalyptus globulus, also known as “Blue Gum.” Eucalyptus trees are characterized by their deep roots and rapid growth, making them highly robust and resilient. While native to Australia, they are now cultivated globally due to their adaptability and ease of growth.

Essential oil composition

Eucalyptus Citriodora

  • Eucalyptus Citriodora

  • INCI
    EUCALYPTUS CITRIODORA OIL
  • Parts of Plant Used
    Leaf
  • Extraction Method
    Steam Distillation
  • Extraction Rate
    0.5% - 0.7%
  • Notes
    Top - Middle
  • Aroma Family
    Woody

Eucalyptus Citriodora Essential Oil Properties & Uses

About 0.5-0.7% of Eucalyptus Citriodora essential oil is obtained from its leaves by steam distillation, light yellow to yellow in color. While the oil yield may be slightly lower compared to essential oils from other eucalyptus species, its distinctive composition sets it apart. The primary component is 1,8-cineole, also known as "eucalyptol," which imparts a refreshing, cool, and throat lozenge-like aroma.It is particularly rich in citronellol, known for its insect-repelling properties, contributing to the oil's lemon-like fragrance. It is popular for its refreshing, slightly sweet, and clear characteristics. The oil harmonizes seamlessly with citrus and woody essential oils, making it an excellent companion for lemony scents. Additionally, it pairs well with Ylang-Ylang, known for its strong sweetness. Despite its neutral strength, it's recommended add in amounts that maintain a well-balanced blend.

Essential oil composition

Essential oil composition

※An example of one batch production is shown here.

  • Citronellal　70.87%
  • Citronellol　5.47%
  • Isopulegol　5.46%
  • iso-Pulegol　3.21%
  • 1,8-Cineole　1.23%

Functions and Efficacies

1,8-Cineole

1,8-Cineole
  • IUPAC Name
    1,3,3-trimethyl-2-oxabicyclo[2.2.2]octane
  • Molecular Formula
    C15H26O
  • Molecular Weight
    154.25 g/mol
  • CAS No.
    470-82-6
  • Structure
    Monocyclic monoterpene ether

Functions and Efficacies of 1,8-Cineole

in slico in vitro ex vivo in vivo
Non-clinical Clinical
Mice Rats Guinea Pigs Insects Rabbits Human
Anti-inflammatory Effects ○
Deodorizing Effects
Anti-malaria Effects ○

Anti-inflammatory Effects

A study reported that in mice with inflammation in the leg, swelling was concentration-dependently reduced in the 1,8-cineole-treated group.1)

Deodorizing Effects

A study reported that when common odorants like skatole and 3-methylbutanoic acid were stored in a sealed container with 1,8-cineole, the odorant components were significantly diminished.2)

Antimalarial Effects

A study reported that the addition of 1,8-cineole reduced the number of infected cells in malaria-infected erythrocytes. Furthermore, it was found to inhibit the intracellular growth of Plasmodium falciparum and mitigate the brain edema caused by the infection3)

  • 1)Yin et al., Br J Pharmacol., 2019
  • 2)Henmi et al., J. Japan Association on Odor Environment, 2020
  • 3)Santos et al., plos one, 2022

IFRA

Citronellal：
There are restrictions on its use in the final product due to its potential of having systemic toxicity and dermal sensitization.

Citronellal

※Only information for selected components are shown here.

Citronellol：
There are restrictions on its use in the final product due to its potential to cause dermal sensitization.

Citronellol

※Only information for selected components are shown here.

References
Jennie Harding [Handbook of Essential Oil and Plant Oil] Tokyo-do Publishing, 2010.
Shinichiro Otsuki/Yukiko Ozaki [Scientific Name Etymology Dictionary of Herbs] Tokyo-do Publishing, 2009.
Jennie Harding [Illustrated Reference Book of Herbs] Sancho Publishing, 2012.
Freddy Ghozland/Xavier Fernandez [L’Herbier Parfume] Hara Publishing, 2013.
Kyohei Mikami [Comprehensive Guide to Essential Oils] Fragrance Journal, 2010.
Yuzuru Ogura [Dictionary of Plants] Tokyo-do Publishing, 1957.
Nobuo Ohashi [Dictionary of Medical Herbs] Tokyo-do Publishing, 2016.
Wanda Sellar [The directory of essential oils] Fragrance Journal, 1992.
Aroma Environment Association of Japan [AEAJ Aromatherapy Certification Official Textbook grade1&2] Sekaibunka, 1999.
Robert Tissearand [Essential Oil Safety] Fragrance Journal, 2018.
Ayako Berg [Aromatherapy Essential Oil Dictionary] Seibido Shuppan, 2022.
Azusa Annells [Enjoying Fragrance: An Illustrated Book of Aromas with Characteristics]Natsumesha CO.,LTD., 2023
International Fragrance Association, Citronellal, 2020.
International Fragrance Association, Citronellol, 2020.
(All written in or translated to Japanese.)
Supervisor
Yamamoto Perfumery co., ltd.

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