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cedar oil
''Cedar oil'', also known as ''cedarwood oil'', is an essential oil derived from the foliage, and sometimes the wood and roots, of various types of conifers, most in the pine or cypress botanical families. It has many uses in medicine, art, industry and perfumery, and while the characteristics of oils derived from various species may themselves vary, all have some degree of bactericidal and pesticidal effects.
==Sources and characteristics==
Although termed cedar or cedarwood oils, the most important oils of this group are produced from distilling wood of a number of different junipers and cypresses (''Juniperus'' and ''Cupressus'' spp., of the family ''Cupressaceae''), rather than true cedars (''Cedrus'' spp., of the family ''Pinaceae''). A cedar leaf oil is also commercially distilled from the Eastern arborvitae (''Thuja occidentalis'', also of the ''Cupressaceae''), and similar oils are distilled, pressed or chemically extracted in small quantities from wood, roots and leaves from plants of the genera ''Platycladus'', ''Cupressus'', ''Taiwania'' and ''Calocedrus''.〔(Chapter 10: Cedarwood Oils ), United Nations Food and Agriculture Organization report〕
The cedar oil of the ancients, in particular the Sumerians and Egyptians, was derived from the Cedar of Lebanon, a true cedar native to the northern and western mountains of the Middle East. The once-mighty Cedar of Lebanon forests of antiquity have been almost entirely eradicated, and today no commercial oil extraction is based on this species. One of the elements found in many cedarwood trees is cedrol. Depending on the amount of cedrol in a specific species of cedarwood can determine its pesticidal effect on insects. Ancient Egyptians would use the oil from cedarwood trees in the embalming process, which in effect helped to keep the insects from disturbing the body.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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