α-Pinene - Alpha pinene

Japanese: α-ピネン - あるふあぴねん
α-Pinene - Alpha pinene

...It is a colorless, fluid liquid with a distinctive pine-like odor that is found widely in plant essential oils, and is the main component of turpentine in particular. There are two isomers of pinene, α-pinene and β-pinene, and they exist in nature as a mixture, but generally the α-pinene content is higher (about 60%). α-pinene also has dextrorotatory (= +52°) and levorotatory (= -51°) optical isomers, with American pinene being dextrorotatory and European pinene being levorotatory.

*Some of the terminology that mentions "α-pinene" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…植物の精油中に広く存在し,とくにテレビン油の主成分をなす,パイン様の特有の香気をもつ無色の流動性のある液体。α‐ピネンとβ‐ピネンの異性体があり,天然には混合物として存在するが,一般にα‐ピネンの含有量が多い(約60%)。またα‐ピネンには右旋性(=+52゜)と左旋性(=-51゜)の光学異性体があり,アメリカ産ピネンは右旋性,ヨーロッパ産は左旋性である。…

※「α-ピネン」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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