Myrcene pepper

Dilution and concentration experiments on samples of dried black pepper berries from India and Malaysia, as well as enantioselec-tive analysis of optically active monoterpenes, indicated ( )-linalool, (-i-)-a-phellandrene, (-)-limonene, myrcene, (-)-a-pinene, 3-methylb-utanal and methylpropanal as the most potent odorants of black pepper. Additionally, 2-iso-propyl-3-methoxypyrazine and 2,3-diethyl-5-methylpyrazine were detected as important odorants of the black pepper sample from Malaysia, which had a mouldy, musty off-flavour (Jagella and Grosch, 1999a). Gamma irradiation was an effective means of decon-... 

Thevanmundi, Poonjaranmunda, Valiakaniak-kadan and Subhakara. Some of the newly developed cultivars are Panniyur-1, Panniyur-2, Panniyur-3 and Panniyur-4. By adopting GC and GC-MS techniques, researchers have identified over 55 compounds from the volatile oil of these pepper cultivars. The major compounds identified were a- and (3-pinene, sabinene, limonene, P-caryophyllene, myrcene, p-cymene and caryophellene oxide (Gopalakrishnan et al., 1993 Menon et al., 2000, 2002, 2003 Menon and Padmakumari, 2005). Table 2.7 illustrates this variability among different popular cultivars. 

Fig. 22.1. Storage of ground black pepper at room temperature - changes in the concentrations of odorants, (a) ( - ) 3-methylbutanal, (o-o) a-pinene, ( - ) myrcene, ( - ) a-phellandrene (b) (A-A) limonene, (A—A) 1,8-cineol, ( —T) linalool...

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