บทคัดย่องานวิจัย

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Laser-based photoacoustic spectroscopy reveals dynamics of postharvest physiological processes.

Vries, H. S. M. de; Veltman, R. H.; Buscher, S.; Schouten, S. P.; Oomens, J.; Harren, F. J. M.;

Postharvest Horticulture Series - Department of Pomology, University of California Year: 1997 Issue: No. 15 Pages: 22-27 Ref: 10 ref.

1997

บทคัดย่อ

Laser-based photoacoustic spectroscopy reveals dynamics of postharvest physiological processes.

CO2 and CO laser-based photothermal techniques are described which allow non-intrusive monitoring of minute changes in volatiles emitted by intact plant species. Numerous small molecules, such as ethylene, acetaldehyde, ethanol, ethane and water, can be measured at subnanolitre/litre level. The time response is a few seconds in flow-through systems. Measurement of ethylene evolution from wounded tomatoes and ethanol and acetaldehyde concentrations in pears stored under aerobic and anoxic conditions is described.