Table 2: Literature survey of origin and chemical composition of clove bud oil.

Component Eugenol
(1)
Eugenyl acetate (2) β-Caryophyllene
(3)
α-Humulene
(4)
β-Caryophyllene oxide
(5)
Humulene epoxide I (6) Humulene epoxide II (7)
Origin
Ph. Eur. Limits [22]
(%)
75-88 4-15 5-14 n.s. n.s. n.s. n.s.
Madagascar [28] (%) 73.5-79.7 4.5-10.7 7.3-12.4 1-1.4 n.s. n.s. n.s.
Madagascar [29] (%) 82.6 6.0 7.2 0.8 0.3 0.1 tr.
India [29] 70 2.1 19.5 1.9 0.4 n.d. 0.1
Cuba [30] 69.8 16.1 13.0 0.6 n.d. n.d. n.d.
Turkey [31] 87.00 8.01 3.56 0.4 0.1 n.d. n.d.
Italy [32] (commercial oil) 82.6 8.03 7.45 n.s. n.s. n.s. n.s.
Portugal [21]
(commercial oil)
85.3 n.d 6.8 0.9 0.1 n.d. n.d.
Unknown [33] (hydrodistilled) 88.58 5.62 1.39 0.19 tr. tr. n.d.

n.s.-not specified; n.d.-not detected; tr.-traces

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