Comparing ginger essential oil level is contained in ungrown ginger and grown big ginger

Comparing ginger essential oil level is contained in ungrown ginger and grown big ginger

ABSTRACT :

 Introduction: In Vietnam, ginger is a herbal medicine. Their rhizoma was used as a spice and their essential oil was used for a wide array of ailment that include arthritis, rheumatism, sprains, muscular aches, pains, sore throats, cramps, indigestion, vomiting, hypertension, dementia, fever, infectious diseases, etc...In this study, we compared the essential oil compounds of two ginger plants: Zingiber officinale Rosce. and Zingiber sp. (a wild vietnamese ginger) by the GC-MS method.

Objectives: Identify and compare morphological characteristic of two plants of the genus Zingiber and components of the two essetial oils by GC-MS technique.

Materials: Ginger trees of about 6 months years old were collected at Bình Phước in April 2009.

Experimental methods: Observe and describe morphological characteristics, microscopic structure of leaves, rhizomes, roots by blue iodine and red carmin method. Preliminary determine the phytochemical components of two ginger species. Oil analysis by GC-MS, System GCHR - MS, GC 6890N, MS AUTOSPECPREMIER P700, Micromass. Column Chromatography HP5MS 30 m x 250 mm x 0.25 mm. Software: NIST Mass spectral search program for the NIST / EPA / NIH mass spectral Library version 2.0d, 2005.

Results: The essential oil of wild ginger has a higher concentration of oil at 0.47% compared to Zingiber officinale at 0.19%. This difference is quite appropriate to microscopic structure of their rhizomes, Zingiber sp. has many eliminate cells more than Zingiber officinale. Besides of essential oils, alkaloids, tannins, organic acids and reduced substances in both of ginger studied, Zingiber sp. contains coumarinic compounds. The main component of essential oil were Camphene, Cineol, a-Citral, b-Citral, a-pinene, b-Myrcene, Linnalol, Terpinene-8-ol, a-Curcumene, Zingiberene, a-Farnesene, b-Sesquiphellandrene given both two gingers, the contents of camphene, Cineol, a-Citral, -Citral in Zingiber sp. are higher than in Zingiber officinale Rosce. Citronellal, b-Eudesmol, b-Bisabolene are only present in Zingiber sp. which content being more than 1%. Verbenone (0.30%), Thujopsene (0.33%) have not been identified before in other investigations of genus Zingiber. Other compounds which are supposed to be of importance for the characteristic pharmacology of ginger were all present.

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