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Sci Rep

Title:		Non-destructive mid-IR spectroscopy with quantum cascade laser can detect ethylene gas dynamics of apple cultivar 'Fuji' in real time
Author(s):		Yumoto M; Kawata Y; Abe T; Matsuyama T; Wada S;
Address:		"Photonics Control Technology Team, RIKEN Center for Advanced Photonics, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan. myumoto@riken.jp. Photonics Control Technology Team, RIKEN Center for Advanced Photonics, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan. TOPCON CORPORATION, 75-1 Hasunuma-cho, Itabashi, Tokyo, 174-8580, Japan"
Journal Title:		Sci Rep
Year:		2021
Volume:		20211019
Issue:		1
Page Number:		20695 -
DOI:		10.1038/s41598-021-00254-1
ISSN/ISBN:		2045-2322 (Electronic) 2045-2322 (Linking)
Abstract:		"Many plants, including fruits and vegetables, release biogenic gases containing various volatile organic compounds such as ethylene (C(2)H(4)), which is a gaseous phytohormone. Non-destructive and in-situ gas sampling technology to detect trace C(2)H(4) released from plants in real time would be attractive for visualising the ageing, ripening, and defence reactions of plants. In this study, we developed a C(2)H(4) detection system with a detection limit of 0.8 ppb (3sigma) using laser absorption spectroscopy. The C(2)H(4) detection system consists of a mid-infrared quantum cascade laser oscillated at 10.5 microm, a multi-pass gas cell, a mid-IR photodetector, and a gas sampling system. Using non-destructive and in-situ gas sampling, while maintaining the internal pressure of the multi-pass gas cell at low pressure, the change in trace C(2)H(4) concentration released from apples (Malus domestica Borkh.) can be observed in real time. We succeeded in observing C(2)H(4) concentration changes with a time resolution of 1 s, while changing the atmospheric gas and surface temperature of apples from the 'Fuji' cultivar. This technique allows the visualisation of detailed C(2)H(4) dynamics in plant environmental response, which may be promising for further progress in plant physiology, agriculture, and food science"
Keywords:
Notes:		"PubMed-not-MEDLINEYumoto, Masaki Kawata, Yasushi Abe, Tetsuya Matsuyama, Tomoki Wada, Satoshi eng Research Support, Non-U.S. Gov't England 2021/10/21 Sci Rep. 2021 Oct 19; 11(1):20695. doi: 10.1038/s41598-021-00254-1"