Compositon of the essential oil of rhizomes of kaempferia galanga L.

Abstract

The composition of the essential oil of rhizomes of Kuempferiu galanga L. growing in Malaysia has been investigated by capillary GC, GC-MS and 'H-NMR. The oil contained 54 components, of which the major constituents were ethyl trans-pmethoxycinnamate (51.6%), ethyl cinnamate (16.5 %). pentadecane (9.0%), 1,8-cineole (5.7 %), 6-car-3-ene (3.3%) and borneol (2.7 %). Terpenoid constituents amounted to 16.4%.

Ultrasound-enhanced subcritical water extraction of essential oils from Kaempferia galangal L. and their comparative antioxidant activities

“…This indicated that the essential oil in USWE and SWE contains fewer impurities, which was similar to the previous report [16]. The main component of essential oil extracted by SD, SWE and USWE was ethyl-p-methoxycinnamate, and the next was ethyl cinnamate, which was consistent with previous studies [26,27] and the content of USWE was the highest, followed by SWE. The results proved that ultrasound did not alter the main effective components in K. galangal essential oil, but the content of effective composition was high.…”

Principles, Concepts and Strategies of Stereoselective Synthesis

“…Several examples of naturally occurring compounds with fused-or bridgedrings are illustrated in Figure 1.10: strychnine, the most celebrated member of the Strychnos family of Corynanthe alkaloids; brevetoxin B, a member of the family of neurotoxines; and optically active D-(þ)-borneol, a terpene that is a component of many essential oils. 14,15 In many instances, the geometric structure can have significant influence on chemical and biochemical properties.…”

In Vitro Propagation of Kaempferia Galanga (Zingiberaceae) and Comparison of Larvicidal Activity and Phytochemical Identities of Rhizomes of Tissue Cultured and Naturally Grown Plants

“…Essential oil in rhizome is volatile and is used as a spice, beverage and also in perfume and cosmetic industries [3,4]. Leaves and flowers contain flavonoids [5].…”

“…Leaves and flowers contain flavonoids [5]. Main constituents of the rhizome extract contain ethyl-p-methoxycinnamate, ethyl cinnamate, 3-carene, camphene, borneol, cineol, kaempferol and kaempferide which are responsible for many properties of K. galanga [3]. The rhizome of the plant has been reported to possess stimulant, carminative, diuretic and stomachic properties [6].…”