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Essential Oil Constituents of Needles, Dry Needles, Inflorescences and Resins of Pinus Caribaea Morelet Growing in Bangladesh

JASIM UDDIN CHOWDHURY
BCSIR Laboratories, P.O.- Chittagong Cantonment, Chittagong-4220, Bangladesh

MD. NAZRUL ISLAM BHUIYAN*
BCSIR Laboratories, P.O.- Chittagong Cantonment, Chittagong-4220, Bangladesh

NEMAI CHANDRA NANDI
BCSIR Laboratories, P.O.- Chittagong Cantonment, Chittagong-4220, Bangladesh

Abstract/ Executive Summary:

Essential oils obtained by hydrodistillation from needles, dry needles, inflorescences and resin of Pinus caribaea Morelet were analyzed by GC-MS. Seven chemical constituents in oil of needles, 13 in dry needles, 4 in inflorescences and 6 in resin were identified. The major constituents found in the needle oil are limonene, caryophyllene and germacrene D in the dry needle oil limonene, caryophyllene oxide and caryophyllene in the inflorescences oil caryophyllene oxide, limonene and crypton and in the resin oil bicyclo[3.1.1]hept-2-ene, 2,6,6- trimethyl- (52.82%), longifolen, crypton and β-pinene.

Keywords: Pinus caribaea, Chemical composition, Essential oil, GC-MS

Location: BCSIR Laboratories, Chittagong

Start Date: 00-07-2007

End Date:

Program Area: Development of Host and Medicinal Plants

Commodity: Pine

Objectives:

To determine the Essential oil constituents of needles, dry needles, inflorescences and resins of Pinus caribaea Morelet growing in Bangladesh

Methodology:

s. In this paper the authors describe the chemical composition of the essential oil from needles, dry needles, inflorescences and resin of P. caribaea collected from plants grown in the campus of BCSIR Laboratories, Chittagong, during July 2007 by hydrodistillation method for four hrs. The plant was identified by matching with voucher specimen preserved in the herbarium of BCSIR Laboratories. The isolated oils were dried over anhydrous sodium sulphate. A comparison has been made with oils produced plants by other P. caribaea grown in different geographical regions in the world. The needles, dry needles, inflorescences and resin oil of P. caribaea were analyzed by electron impact ionization method on GC-17a gas chromatograph (Shimadzu) coupled to a QP 5050A Mass Spectrophotometer (Shimadzu). A fused capillary column (30 m × 2.5 mm) coated with DB-5 ms (J&W) was used. Direct injection of 2 µl samples with He as a carrier gas (at pressure of 100 Kpa) and oven temperature held isothermal at 50°C for 4 min. and then programmed to increase at 10°C/min to 150°C with keep time of 5 min which was further programmed to increase at 10°C/min to 250°C with a keep time of 5 min. Acquisition parameters: full scan; scan range 40-350°C, ionization voltage 70 ev. The essential oil composition was identified by comparing the mass spectra from NIST Library (NIST 147 & NIST 27).

Source of Information: Bangladesh J. Bot. 37(2): 211-212, 2008 (December)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

On the basis of the present findings it may be concluded that P. caribaea growing in Bangladesh, may be utilized as a source for isolation of natural limonene, caryophyllene oxide and bicyclo[3.1.1]hept-2-ene, 2,6,6- trimethyl.

Knowledge Management: Journal