Fragrant sesquiterpenes from agarwood

Analysis of essential oil of eaglewood tree (Aquilaria agallocha Roxb.) by gas chromatography mass spectrometry

“…workers (Maheshwari et al, 1963;Varma et al, 1965;Paknikar and Naik, 1975;Thomas and Ozainne, 1976;Pant and Rastogi, 1980;Bhandari et al, 1982;Nagashima et al, 1983;Ishihara et al, 1991Ishihara et al, , 1993. Maheshwari et al (1963) isolated three new sesquiterpenic furanoids of the selinane group from agarwood oil, obtained from the fungus infected plant and their structures and absolute configurations determined by degradative studies and physical measurements.…”

“…Nakanishi et al (1984) again reported that a benzene extract of an Indonesian sample of 'Jinkoh' agarwood was found to contain -agarofuran, 10-epi--eudesmol and oxo-agarospirol. Ishihara et al (1991) characterized seven new sesquiterpenes based on the guaiane skeleton in a sample of agarwood oil. Five new eudesmane sesquiterpenes and three other compounds further characterized by Ishihara et al (1993) in a sample of agarwood extract produced in the laboratory from A. agallocha of Vietnamese origin.…”

“…Ishihara et al (1991) characterized seven new sesquiterpenes based on the guaiane skeleton in a sample of agarwood oil. Five new eudesmane sesquiterpenes and three other compounds further characterized by Ishihara et al (1993) in a sample of agarwood extract produced in the laboratory from A. agallocha of Vietnamese origin. Vesiculararbuscular myccorhizal association in the tree species and changes in amino acid composition due to pathogenesis were also studied by Tamuli et al (2002aTamuli et al ( , 2002b.…”

Investigation of Agarwood Compounds in Aquilaria malaccensis & Aquilaria Rostrata Chipwood by Using Solid Phase Microextraction

“…Many of compounds detected in the main chromatograms of these sample were pyrolysis products especially in the smoke sample, while their present in the incense volatile are less and that can be resulted from the increased temperature which applied to burned sample, these products as toluene, furfural, o-xylem, benzaldehyde, phenol, p-methylanisol, salicylaldehyde, acetophenone, P-cresol, nonanal, naphthalene and vanillin; some of the sesquiterpenes are also can be pyrolyzed products from the resin. These finding also confirmed by Isihara (1993) and many of these pyrolyzed form are also reported by Pripdeevech (2011) in his study for the oil of agarwood [16,18,[29][30][31][32] The present of 2-butanone -4-phenyl are significant in the smoke sample only, while aromadendrene, elemol, dihydro β-agarofuran and ɤ-selinene are presented in the volatile sample more than smokes in both species of Aquilaria malaccensis & Aquilaria rostrata kessane has not reported before since the early studies on agarwood were carried out in the lower capacity of the used GCMS instrument today some of the investigation used 20 eV, and not, as usual, at 70 eV beside the uses of the more advance NIST library as search tool to identify the compounds [32][33][34].…”

Agarwood oil quality classifier using machine learning

“…Nowadays, agarwood oil is widely traded internationally and the market demand for it is very huge especially from countries in the Middle East, Japan and Malaysia [1]. The agarwood oil is used as incenses, perfumes, traditional ceremonies and religious prayers [1][2][3]. The quality of the agarwood oil plays an important role in classifying the market price section that it will be sold as.…”