Comparative Chemical Analysis of the Essential Oil Constituents in the Bark, Heartwood and Fruits of Cryptocarya massoy (Oken) Kosterm. (Lauraceae) from Papua New Guinea

Abstract

Exhaustive hydro-distillation of the bark, heartwood and fruits of Cryptocarya massoy (Lauraceae) afforded pale yellow-coloured oils in 0.7, 1.2 and 1.0 % yields, respectively. Detailed chemical evaluation of these distillates using GC/MS revealed the major components in the bark and the heartwood oils to be the C-10 (5,6-dihydro-6-pentyl-2H-pyran-2-one) and C-12 (5,6-dihydro-6-heptyl-2H-pyran-2-one) massoia lactones, while the major fruit oil constituent was benzyl benzoate (68.3 %). The heartwood also contained trace amounts of the C-14 (5,6-dihydro-6-nonyl-2H-pyran-2-one) massoia lactone (1.4 %) and the saturated C-10 derivative δ-decalactone (2.5 %).

Isomerization of anacardic acid: A possible route to the synthesis of an unsaturated benzolactone and a kairomone

“…One example of an unsaturated lactone is massoia lactone (Fig. 2), which has been long been used as a constituent of native medicines [18,19]. Massoia lactone and analogs are known to possess good antimicrobial activity against Staphylococcus aureus, Bacillus subtilis, and Esherichia coli.…”

Hydrostatic countercurrent chromatography and ultra high pressure LC: Two fast complementary separation methods for the preparative isolation and the analysis of the fragrant massoia lactones

“…The GC-MS analyses showed that fraction II (81 mg) contained all the minor fragrant sesquiterpenes (Rt 45-65 min), such as a-cubebene, b-caryophyllene, a-copaene, b-elemene, zingiberene, a-amorphene, etc. In the previous study on massoia undertaken by Rali et al [1], these compounds were identified in fruit and heartwood oils, but not in the bark oil. This was due to their small concentration, and also for most of them to co-elution with the main C-10 lactone, avoiding consequently their detection in the chromatogram.…”

“…1). The C-10 derivative is predominant in the massoia bark oil, in which Rali et al have measured a content of 65% [1]. The other main components are C-12 lactone and benzyl benzoate, representing 17 and 13%, respectively.…”

Antibiotics in Aquaculture – Use, Abuse and Alternatives

“…The chemical composition of EOs depends on the extraction method and can also vary according to conditions such as climate, soil composition, origin, season, plant organ, age and vegetative cycle stage (Abu-Darwish et al, 2011;Angioni et al, 2006;Ben Marzoug et al, 2011;Chung et al, 2011;Ennajar et al, 2011;Karakaya, 2011;Masotti et al, 2003). The composition of EOs is very complex and can include more than sixty components; however, a few major components constitute up to 85% of the EOs and generally determine their biological properties (Bakkali et al, 2008), whereas other components are present only as traces (Bader et al 2010;Rali et al, 2007). The components include two groups of distinct biosynthetic origin that are synthesized in secondary metabolism (Nagegowda, 2010;Pichersky et al, 2006).…”