Response to Individual compounds present in tie headspace of Phytophihora infestans infected potato tubers using Insect antennae as sensing elements

摘要

Volatile organic compounds (VOCs) collected from potato tubers inoculated with Phytophthora infestans were analysed using gas chromatography - mass spectrometry (GC-MS). Examination of the volatile profiles showed 2-ethyl-l-hexanol, 1,3-dimethoxybenzene and l-octen-3-ol as promising marker compounds for infected tubers. A sensor based on insect antennae was selected for possible use as an indicator of these compounds. Results show that the antenna of Leptinotarsa decemlineata is sensitive to three out of four compounds. The response of this sensor to individual compounds is discussed with relation to a practical application in which volatile mixtures must be monitored.