What is
Agarwood

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Agarwood is the heartwood
that belongs to the Aquilaria
genus, Thymelaeceae family. It
produced by a number of
Aquilaria
species
in Southeast Asia, with Indonesia,
Malaysia, Vietnam, Cambodia, Thailand,
Laos and Papua New Guinea as the main
producing countries and Singapore being
the main trade centre. In India,
Aquilaria achalloga is mostly found while Aquilaria
malaccensis is found particularly in
Malaysia and Indonesia. Aquilaria
crassna principally grows in Indochina.
Agarwood is also known as
Chén-xīang
(Chinese),
Jin-koh
(Japanese),
Lignum aquila (eagle-wood),
Aloeswood or
Agilawood
(Europe),
gaharu (Malaysia & Indonesia),
trầm
hương
(Viatnamese),
Mai Kritsana
(Thai language) and
Mai
Ketsana (Laos).
The resin-impregnated heartwood is fragrant and,
as a result, highly valuable. This resin
is produced as a result of pathological
or wounding processes. It is also
thought that resin production is a
response to fungal infection.
Interestingly however, not all
Aquilaria
trees
produce resin and it is extremely
difficult (or even impossible) to judge
from the outside of a tree whether or
not it is infected. Cutting the tree is
the only way to find out whether the
tree contains the resin.
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The History
of Agarwood Uses
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Throughout the history, only the king and the
very wealthy were able to benefit from its
powers and now it can be available to the
general public. Aloeswood was such a precious
commodity that was used as a give among nations
for their diplomatic purposes, while it
reflected on one’s wealth and power.
King Louis XIV of
France had his shirts washed in
rose water in which Aloeswood had been
previously boiled. The Indian poet
Kalidasa
once wrote:” Beautiful ladies, preparing
themselves for the feast of pleasure, cleanse
themselves with the yellow powder of sandal,
clear and pure. They freshens their breasts with
pleasant aromas, and suspend their dark hair in
the smoke of burning Aloeswood. This is the
legendary “tree from the garden of Eden” where
Adam and Eve were only allowed to take cutting
from the Aloeswood tree.
Samurai warriors
scented their armour with Aloeswood smoke for
luck before going to battle. Meanwhile,
Lord Buddha
was to have said that the smell of Aloeswood
burning “is the scent of Nirvana”. It is also
favorites by Lord Krishna. The
Egyptians
are believed to have used agarwood incense as
part of their death rituals more than 3,000
years ago. They used Aloeswood to embalm and
anoint the dead. Eight-century Egyptian jurist
and poet Muhammad ibn Idris al-Shafi’I said:
“Gold is just dust when still in the ground, and
oud in its country of origin is just another
kind of firewood.
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The Uses of
Agarwood (Nowadays)
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Today the range of agarwood products and their uses is seemingly
endless. Solid pieces of agarwood are highly
appreciated as ‘natural art’ in Japan, Korea and
Taiwan. Craftsmen carve raw pieces of agarwood
into beautiful
wooden sculptures. Agarwood is
also turned into
beads and
bracelets. Most of the
wood, however, is processed and either turned
into oil which is used in
perfumes and other
cosmetic products,
or the agarwood chips are ground into powder
which is used as the raw material for
incense
making (and sometimes also for special
cigarettes).
The oil is also used in the production of
traditional Chinese and Korean
medicine,
in the preparation of (medicinal) wine and
various other products. The oil is mainly used
in the Arab world where it is in high demand. It
is by far the most precious essential oil with
prices reaching as much as ten times that of
sandalwood oil. The largest market for top class
incense is Japan with its long tradition in
incense making. Both the Arab countries and
Japan are interested in high quality agarwood
and manufacturers in these countries prefer to
process the raw material themselves. This also
avoids the mixing of high grade agarwood with
wood of lower quality.
The oil is
extracted from the agarwood through
distillation. This delicate process determines
both the amount and quality of oil produced.
With the exception of large solid pieces of
agarwood which are traded as individual pieces,
most of the wood is ground into very small
pieces or powder, which is immersed in water and
left to ferment over time. Then the material is
transferred to distillation kettles and steamed.
After heating, the condensed water and oil are
captured in a container where the oil floats on
top of the water. The water is removed and the
oil is tapped. The price of high quality oil can
be as much as US$50,000 to US$80,000 per litre.
This process can be repeated once or twice
depending on the quality of the water and the
costs of the distillation process. The powder
which remains after distillation can be used for
low grade incense making. It is estimated that
for the production of one litre of oil 100 to
150 kilos of agarwood is necessary.
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Agarwood Project In Certain Countries
The high prices for agarwood and the local
depletion of resources have led to a variety of
efforts to stimulate the growth of agarwood.
Experiments were set up in several countries
including China, Thailand and Indonesia.
However, one of the most successful efforts was
a project initiated in
Vietnam.
In addition to
laboratory analysis, field experiments were
developed by a non-governmental organization
based in Ho Chi Min City. The project, called
The Rainforest Project (TRP), is in the Seven
Mountains area of South Vietnam close to the
border with Cambodia. The experiments were
undertaken with local farmers and Buddhist monks
who had gained considerable experience in the
cultivation of
Aquilaria trees.
Building on their knowledge, experimental plots
were developed to stimulate the production of
agarwood. The process and experiments were
supervised by a wood pathologist from the
University of Minnesota, Prof. Robert Blanchette
and the Director of TRP, Henry Heuveling van
Beek. The main principle of the process was the
drilling of holes in the tree trunk and keeping
the wound open by putting a small piece of
plastic pipe in the hole. A chemical treatment
was added to the wound to encourage the trees
defence mechanism which stimulates the
production of the resin. After years of
experimenting with the numbers of holes, the age
of the tree, the amount of chemicals and other
variables, the first trees were harvested and
the production of incense made from the
cultivated agarwood has begun.
In Thailand,
the declining of agarwood supply has led Thai
scientists, in partnership with the private
sector, to set up relatively large scale
plantations. One of these plantations is run by
a company called Krissana Panasin in Chantaburi,
Southeast Thailand. Over the years it has
established a substantial plantation of several
hundred hectares, including nurseries,
processing and distillation units. The research
department of the company has been experimenting
with all kinds of techniques to obtain the
optimal quality. Moreover, it provides seedlings
to interested farmers who can produce agarwood
trees on their own farms. The technology to
wound the trees in order to start agarwood
production is also provided to the small holders
by the company. The mature trees are eventually
being sold for processing to the company as the
farmers usually lack the connections and skills
to organise the transport to other buyers.
In Indonesia,
agarwood cultivation project was undertaken by
the Catholic Church in Marauke, Papua. The
project aims to integrate agarwood trees into
the local agroforestry system. This is based on
the idea that in the future agarwood may become
an additional source of income for the farmers.
Methods that are being used are largely based on
local trial and error efforts in wounding and
treating trees, including innoculation.
Processing units are still absent and the
farmers are fully dependent on outside traders
for market opportunities.
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