Potential for Sensor Systems to Monitor Fruit Physiology of Mango during Long-Distance Transport

乙烯監測系統在芒果長途運輸果實生理監測中的應用潛力
Marcus NAGLE^1,2, Eriko YASUNAGA³, Busarakorn MAHAYOTHEE4, Joachim MÜLLER^1
1 Institute of Agricultural Engineering, University of Hohenheim, Garbenstrasse 9,Stuttgart, Germany
² Agricultural Research and Development Program, Central State University, Wilberforce, Ohio 45384, USA
³ Institute for Sustainable Agro-ecosystem Services, Graduate School of Agricultural and Life Sciences,
The University of Tokyo, 111 Midori Machi, Nishi Tokyo, Tokyo 1880002, Japan
⁴ Department of Food Technology, Faculty of Engineering and Industrial Technology, Silpakorn University,
Nakhon Pathom,Thailand
(Received December 1, 2017; Accepted January 21, 2018)

Abstract

Mango is a widely c*ted tropical fruit crop and exhibits climacteric behavior characterized by changes in respiration and ethylene production during development and ripening. Optimal postharvest ripening depends on many factors, but during shipping to distant high-value markets, ripening generally should be minimized. Monitoring the physiological activity presents possibilities for real-time response and the integration of smart technologies. However, systems are still needed which are portable, economical, and accurate. Optical sensors are low-cost but lack good accuracy, while electrochemical sensors are highly accurate but expensive. Economic nanoparticle sensors are being developed for potential applications in fruit quality monitoring, but they can be complex. This work explores possibilities for development of a monitoring system for climacteric fruits such as mango and presents results on testing of commercially available systems and development of sensors that will fit the criteria.

芒果是一種廣泛種植的熱帶水果作物，在發育和成熟過程中表現出呼吸和乙烯產量變化的成熟期特征。的采后成熟取決于諸多因素，但在運輸到遙遠的高價值市場時，成熟通常應小化。監測生理活動提供了實時響應和智能技術集成的可能性。然而，仍然需要便攜、經濟和準確的系統。光學傳感器成本低，但精度不高，電化學傳感器精度高，但價格昂貴。經濟型納米顆粒傳感器正被開發用于水果質量監測的潛在應用，但它們可能很復雜。本研究探討了開發芒果等成熟期水果監測系統的可能性，并介紹了商用系統的測試結果和符合標準的傳感器的開發。

Keywords: gas sensor, mango fruits, postharvest ripening, transport monitoring

RESEARCH IMPLEMENTATION AND RESULTS
Testing of the ethylene analyzer
Research was conducted in order to evaluate commercial EC sensors for ethylene measurement. A device was obtained for testing, namely the ETH-1010N Electrocatalytic Ethylene Analyzer (ETH) produced by Fluid Analytics, Inc., USA. Tests were carried out to evaluate several aspects of the device.

研究實施與結果
乙烯分析儀測試
為了評估商用乙烯測量用EC傳感器進行研究。獲得用于測試的裝置，即美國Fluid Analytics公司生產的ETH-1010N電催化乙烯分析儀。進行測試以評估裝置的幾個方面。