Among the constituents contained in the basil and
orange oils, estragole had the lowest LC50 values with 0.004 and
0.013 mg cm−3 against S. zeamais and T. castaneum adults. The LD50
values of linalool found in both the oils were 0.016 and 0.023 mg cm−3
,
and the main compound of orange oil, limonene, had LD50 values
0.122 and 0.171 mg cm−3 against S. zeamais and T. castaneum, respectively.
Among tested compounds, the bicyclic and acyclic monotepenes,
α-pinene and β-myrcene exhibited the lowest activities against
S. zeamais (0.264 and 0.274 mg cm−3
) and T. castaneum (0.273 and
0.275 mg cm−3
), respectively