a study of the quality of a local herbal tea and volatiles of parinari ...

Esters constituted (83.3 % %) while alcohols s comprised (16.7 %) of the total number of
compounds identified in S. cocculoides upon using SPME. In contrast, using the CFMD
method, resulted into ester esters (33.3%), alcohols (33.3 %) and carbonyls s (33.3 %) in ripe
fruits. The unripe fruits provided only one alcohol when CFMD was used. used
Figure 4.2 Structures of compounds extracted from the headspace of S. cocculoides
fruit pulp using SPM SPME
Using the he SPME method, isobutyl acetate, 22-methyl
butyl acetate, , ethyl 2 methyl
butyrate, 2.6 di-ter butyl-4-methyl-phenol,
butyl-2-methyl butyrate, and geranyl acetate
were identified (Figure 4.2 4.2). The CFMD method provided ethyl 2 methyl butyrate,
2 butoxy ethanol and 1-oxiranylethanone.
It is interesting that ethyl 2-methyl 2 butyrate
was identified in S. cocculoides using both the SPME and the CFMD method. Due to its
low odour threshold and fruity aroma aroma, ethyl 2-methyl methyl butyrate is considered consider to be one of
the important contributors to the characteristic sweet, apple apple-like like odour of California
skullcap (Scullaria Scullaria californica A. Gray) flowers (Takeoka et al., ., 2008), and Rambutan
fruit (Nephelium Nephelium lappaceum L.) aroma (Ong et al.,1998). The presence e of geranyl acetate
in S. cocculoides using SPME has been hitherto unreported unreported.
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