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- W1492721035 abstract "Six Pittosporum species native to New Zealand, P. cornifolium, P. crassifolium, P. eugenioides, P. kirkii, P. tenuifolium, and P. umbellatum, were investigated in this study. The 88 volatile compounds released from their leaves were identified by head space SPME whose optimized conditions are fibre coating PDMS, extraction time 30mins and extraction temperature 70°C with GC‐MS analysis. Most of these volatile compounds were identified as sesquiterpenes, 21 of which were shown to be major constitutes in the Pittosporum species. They are α‐pinene, sabinene, β‐pinene, β‐ myrcene, limonene, α‐copaene, (‐)‐β‐bourbonene, β‐cubebene, α‐gurjunene, β‐ caryophyllene, cis‐thujopsene, humulene, alloaromadendrene, γ‐muurolene, germacrene D, β‐cadinene, bicyclo[3.1.1]hept‐2‐ene, 2,6‐dimethyl‐6‐(4‐methyl‐3‐ pentenyl)‐, naphthalene, 1,2,4a,5,6,8a‐hexahydro‐4,7‐dimethyl‐1‐(1‐methylethyl)‐, bicyclo[2.2.1]heptane, 2‐methyl‐3‐methylene‐2‐(4‐methyl‐3‐pentenyl)‐, (1S‐endo)‐, 4,4‐dimethyl‐3‐(3‐methylbut‐3‐enylidene)‐2‐methylenebicyclo[4.1.0]heptane and cyclohexane, 1‐ethenyl‐1‐methyl‐2‐(1‐methylethenyl)‐4‐(1‐methylethylidene)‐. The main components in P. cornifolium, P. crassifolium, P. eugenioides, P. kirkii, P. tenuifolium, and P. umbellatum are germacrene D, α‐copaene, nonane, germacrene D, β‐caryophyllene and cyclohexane, 1‐ethenyl‐1‐methyl‐2‐(1‐methylethenyl)‐4‐(1‐ methylethylidene)‐, respectively. The GCMS fingerprint spectra clearly showed the difference of these plants. Six of the Pittosporum species were also subjected to projective mapping of their odour profiles. This showed “green” and “sweet” as general descriptors for all the Pittosproum. However, P. kirkii and P. cornifolium were also described as “fruity” and “floral”. The aromas of P. umbellatum, P.tenuifolium and P. crassifolium as “bitter”, “woody” and “grassy” with a sense of “spicy” and P. eugenioides as having a “citrus” odour." @default.
- W1492721035 created "2016-06-24" @default.
- W1492721035 creator A5087096958 @default.
- W1492721035 date "2013-01-01" @default.
- W1492721035 modified "2023-09-24" @default.
- W1492721035 title "Characterisation of volatile compounds from the leaves of six Pittosporum species; an instrumental and sensory evaluation" @default.
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