Volatile Constituents of Several Varieties of Pummelos and Characteristics among Citrus Species

抄録

Cold-pressed oil (CPO) components from 8 varieties of pummelos were identified and measured. γ-Terpinene was the second major component in 4 varieties, but only a minor component in the others. Cadina-1(10), 6, 8-triene was identified by GC-MS in addition to the 63 compounds identified already.
Multivariate analyses were applied to 37 kinds of citrus fruits including pummelos and other species. The pummelo was classified into 2 groups by cluster analysis, and into 3 groups by principal component analysis on the basis of the oxygenated composition (w/w%) in fresh CPOs. The tendency for classification agreed in the two analyses. Nootkatone was the only discriminating component of the pummelo species from others. The results are also discussed in citrus species other than pummelo, being compared with the botanical classifications.