Identification and quantitative analysis of the volatile substances emitted by maturing cotton in the field |
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| Authors: | Thompson A C Baker D N Gueldner R C Hedin P A |
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| Affiliation: | Agricultural Research Service, State College, Mississippi 39762. |
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| Abstract: | When atmosphere from cotton plants (Gossypium hirsutum L., var. Deltapine Smoothleaf) was condensed by passing it over the expansion coil of an air conditioner and three 1-hour collections per day (early morning, noon, and late afternoon) were made, the total essential oils were found to consist of 50 to 60% β-bisabolol (Ik 1660) and γ-bisabolene (Ik 1550) and 30 to 40% geraniol (Ik 1250), myrtenal (Ik 1328), nerolidol (Ik 1520), and β-caryophyllene oxide (Ik 1590). As the plant matured, trans-2-hexanol was produced in concentrations of 7 to 27%. Before fruiting, β-bisabolol made up as much as 60% of the total essential oil transpired by the plants, and as the concentration of β-bisabolol increased, that of γ-bisabolene decreased. |
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