Antibacterial Activity of 4-Oxo-(E)-2-hexenal from Adults and Nymphs of the Heteropteran, Dolycoris baccarum (Heteroptera: Pentatomidae)

Koji NOGE; Hiroki KIMURA; Makoto ABE; Judith X. BECERRA; Shigeru TAMOGAMI

doi:10.1271/bbb.120321

Organic Chemistry Note

Antibacterial Activity of 4-Oxo-(E)-2-hexenal from Adults and Nymphs of the Heteropteran, Dolycoris baccarum (Heteroptera: Pentatomidae)

Koji NOGE, Hiroki KIMURA, Makoto ABE, Judith X. BECERRA, Shigeru TAMOGAMI

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Keywords: Dolycoris baccarum, 4-oxo-(E)-2-hexenal, (E)-2-hexenal, antibacterial activity, 16S rRNA

JOURNAL FREE ACCESS

2012 Volume 76 Issue 10 Pages 1975-1978

DOI https://doi.org/10.1271/bbb.120321

View "Advance Publication" version (October 7, 2012).

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Abstract

We identified 4-oxo-(E)-2-hexenal (4-OHE) as a common component of the secretion from both Dolycoris baccarum nymphs (66.5 ± 34.7 µg/bug) and adults (87.4 ± 48.0 µg/bug) by GC/MS. We also found that this compound inhibited the growth of bacteria starting at 10 µg. The stronger antibacterial activity of 4-OHE than that of (E)-2-hexenal and (E)-2-octenal might be explained by the reactivity of α,β-unsaturated aldehydes with nucleophilic molecules.

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