It is the main component of the essential oil contained in the rhizomes of ginger, Zingiber officinale , and is a type of sesquiterpene. Its boiling point is 130°C (14mmHg), specific optical rotation [α] D = -73.38°C, refractive index n D 20 = 1.4956, and specific gravity is 0.8684. It turns into a resin when left to stand. When heated to 60°C in acetic acid containing a small amount of sulfuric acid, it becomes isozingiberene, and when dehydrogenated, it becomes cadarine. Another aromatic component of ginger is zingiberol, a type of sesquiterpene alcohol. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
ショウガZingiber officinaleの根茎に含まれる精油の主成分で,セスキテルペン類の一種。沸点130℃(14mmHg),比旋光度[α]D=-73.38℃,屈折率nD20=1.4956,比重0.8684。放置すると樹脂化する。少量の硫酸を含む酢酸中で60℃に加熱するとイソジンギベレンになり,脱水素するとカダリンになる。ショウガの香気成分にはこのほかにセスキテルペンアルコールの一種ジンギベロールzingiberolがある。
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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