IFEATWORLD July 2022

WORLD 43
Cedrene from Firwood Cedrol Cedrene from Cedarwood
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H1
Firwood oil maker, Mr. Shen, the owner
of a firwood oil manufacturer in Qimen
County in Anhui Province, says Qimen
has the biggest forest area in Anhui
Province. In Qimen about 60% of the
forest is firwood. Mr. Shen’s factory
began making firwood oil with the
sawdust from wood sawing factories
in 2014, and in 2021 began to make
firwood oil from the roots. Mr. Shen is
still the only manufacturer to undertake
this business in Qimen and one of
only two in Anhui Province.
With oil processing technology continuously
improving and steam distillation
methods widely promoted and
used, the quality of Chinese cedarwood
and firwood oil has been greatly
improved with a non-burnt odour in
the past five to 10 years. Now, annually,
about 1,800-2,000 MT of crude
cedarwood oil and 6,000-7,500 MT of
crude firwood oil are produced in our
country based on market demand.
Around 4,000 to 5,000 people are
involved in this oil-processing business
in Sichuan, Fujian, Jiangxi, Hunan,
and Anhui, which not only helps local
employment, but also supplements
farmers’ income.
With regard to environmental aspects,
cypress and fir trees prevent soil
erosion and ensure forest coverage
etc. in China. Farmers are required to
replant trees after digging out tree
roots to ensure sustainability and
protect the forests from deforestation
and soil erosion. In some provinces,
such as in Jiangxi province, “Replant
Fund” is required by local governments
for trees’ replanting. This meets
the Government’s requirements on
environmental protection and maintaining
mountains’ green. And the
whole process of the oil processing
starts from the tree roots left over,
dug out, crushed into sawdust, then
sawdust put into the steam distillation
device, heated with steam, then
oil brought out with steam, oil-steam
cooled down into oil-water and finally
to oil-water separated. Oil is obtained
and water is recycled into another
round of production. The sawdust
after its oil is extracted is further
processed into granular fuel, mechanism
charcoal and activated carbon.
It is a closed cycle process, scientific
and environmentally friendly with no
pollution. So, the resources of cypress
and fir trees in China are sustainable
and will not dry up. “This business is
highly appraised and encouraged by
our local government” said Mr. Shen
very excitedly during our visit.
REFERENCES
(also available upon request)
参 考 文 献 :
1. 唐 健 . 柏 木 油 系 列 香 料 的 合 成 [J].
四 川 省 日 用 化 工 研 究 所 , 1995,(3):
28~30.
2. HUANG Luohua, QIN Tefu, OHIRA
Tatsuro. Studies on preparations and
analysis of essential oil from Chinese
fir[J]. Journal of Forestry Research,
2004, 15(1): 80~82.
3. 任 贵 平 , 田 森 . 一 种 从 杉 木 树 根 中 提 取
香 料 有 效 成 分 的 工 艺 :C
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8. ISO. Oil of cedarwood, Chinese type
(Cupressus funebris Endlicher):ISO
9843:2002[S]. 2002.
9. ISO. Oil of cedarwood, Virginian (Ju
niperus virginiana L.):ISO 4724:
2004[S]. 2004.
10. ISO. Oil of cedarwood, Texas
(Juniperus mexicana Schiede):ISO
4725:2004[S]. 2004.
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历 史 简 述 . 自 然 辩 证 法 通 讯 ,2007.
MY FAVOURITE • CHINESE CEDARWOOD OIL AND FIRWOOD OIL