Photoacoustic effect of ethene: Sound generation due to plant hormone gasses

Abstract

Ethene (C2H4), which is produced in plants as they mature, was used to study its photoacoustic properties using photoacoustic spectroscopy. Detection of trace amounts, with N2 gas, of C2H4 gas was also applied. The gas was tested in various conditions- temperature, concentration of the gas, gas cell length, and power of the laser to determine their effect on the photoacoustic signal, the ideal conditions to detect trace gas amounts, and concentration of C2H4 produced by an avocado and banana. A detection limit of 10 ppm was determined for pure C2H4. A detection of 5% and 13% (by volume) concentration of C2H4 produced for a ripening avocado and banana, respectively, in closed space.

Plant phenotyping relevance

植物由来エチレンを光音響分光で検出する測定法を条件検討・検出限界評価し、果実の成熟状態に関連するエチレン産生を測定しているため、植物状態の取得法が中心です。

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