Sensors for Measurement of Respiratory Gases in Fresh Produce Packaging and Storage
用于測量新鮮農產品包裝和貯存中呼吸氣體的傳感器
Nandita Keshria b Cornelia Weltzien b Pramod V. Mahajana
aDepartment of Horticulture Engineering, Leibniz Institute for Agricultural Engineering and Bioeconomy, Potsdam, Germany
bAgromechatronics - Sensor-based Process Management in Agriculture, Technical University of Berlin, Germany
Available online 1 March 2019.
https://doi.org/10.1016/B978-0-08-100596-5.22472-4
Abstract
Maintenance of optimum respiration rate is considered the key to extending the shelf life of fresh produce. Reduction of respiration rate depends on successful maintenance of optimum amounts of the respiratory gases (O2 and CO2) inside the storage and packaging system. To maintain optimal composition of respiratory gases, their precise measurement inside a storage or packaging system is very important. Traditional methods of respiration rate measurement included manual methods that are time consuming, laborious and not accurate. Recent applications involve easy-to-use electrochemical and optical sensor-based O2 and CO2 gas analyzer systems that offer more flexibility, real-time measurement, reliability and accuracy in sensing and controlling the system for measurement of gas concentration. This article gives an insight into the various types of sensors that are currently used for respiration rate measurement and their working principles. It also includes information on various commercially-available sensor-based respiration rate measurement devices, their working principles, advantages, disadvantages and applications. Application of electrochemical sensors offers advantages such as stability and compactness. On the other hand, optical sensors are advantageous mostly due to their in-situ analysis. Fluorescence quenching-based optical sensors offer non-invasive, non-destructive gas measurement inside packages. The infrared optical gas sensors are advantageous for continuous measurement. Application of these sensors for collection of comprehensive information is important to better understand the respiration process and hence aid in design of packaging and storage systems; however, there is still scope for more intensive research in this area.
保持呼吸速率被認為是延長新鮮農產品貨架期的關鍵。呼吸速率的降低取決于儲存和包裝系統內呼吸氣體(氧氣和二氧化碳)的量的成功維護。為了保持呼吸氣體的成分，在儲存或包裝系統中對其進行精確測量是非常重要的。傳統的呼吸速率測量方法包括人工測量，費時費力，不準確。的應用包括易于使用的基于電化學和光學傳感器的氧氣和二氧化碳氣體分析儀系統，該系統在檢測和控制氣體濃度測量系統方面具有更大的靈活性、實時性、可靠性和準確性。本文介紹了目前用于呼吸速率測量的各種傳感器及其工作原理。它還包括各種商用傳感器式呼吸速率測量裝置的信息、其工作原理、優點、缺點和應用。電化學傳感器的應用具有穩定性和緊湊性等優點。另一方面，光學傳感器的優勢主要在于其原位分析。基于熒光猝滅的光學傳感器在包裝內提供非侵入性、非破壞性氣體測量。紅外光學氣體傳感器有利于連續測量。應用這些傳感器收集綜合信息對于更好地了解呼吸過程，從而有助于包裝和儲存系統的設計是很重要的；然而，在這方面仍有更深入研究的空間。
Keywords：Electrochemical sensor,Fluorescence quenching,Fresh produce,Gas analyzer,Gas measurement,In-situ,Non-invasive,O2 and CO2 sensor,Optical sensor,Packaging system,Post-harvest,Real-time Respiration rate,Sensors,Storage system
關鍵詞：電化學傳感器、熒光淬火、新鮮農產品、氣體分析儀、氣體測量、原位、非侵入、O2 和 CO2 傳感器、光學傳感器、包裝系統、采后、實時呼吸速率、傳感器、存儲系統
