- 作者: 葉炳賢
- 作者服務機構: Contribution from the Bureau of Commodity Inspection & Quarantine, Taipei, Taiwan
- 中文摘要:
Two varieties of spearmint grasses were collected to determine the yields of the essential oil as well the chemical constituents of the oil.
The annual production of the Japanese improved variety grass was about 10,000-18,000 kg/ha. and that of the essential oil was about 20kg/ha. The oil is mainly composed of 53.4% (-)-carvone and 27.5% (-)-limonene.
The annual production of the Ryan-Fong variety grass was about 30,000 kg/ha. which in turn yielded about 80kg/ha. of the essential oil. The oil contains 5% (-)-limonene, 60% pulegone, and 30% rotundifolone.
The ultraviolet spectrum of rotundifolone semicarbazone in methanol showed maxima at 273-274mμ, which was slightly different form the value reported by Indian investigator. The reason for it was inquired. - 英文摘要: --
- 中文關鍵字: --
- 英文關鍵字: --