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Engineering analysis in the development of Modified Atmosphere Storage (MAS) to extend shelf life of tropical agricultural fresh products during storage
Eusabius Paul Pega, Nursigit Bintoro and Arifin Dwi Saputro

UNIVERSITAS GADJAH MADA
Bulaksumur, Caturtunggal, Kec. Depok, Kabupaten Sleman, Daerah Istimewa Yogyakarta, 55281


Abstract

An attempt to extend the shelf life of fresh products after harvest still need to be investigated to find the most applicable technology with the cheapest cost for the farmer. Seeking of such technology becomes an important aspect for better postharvest handling in Indonesia. In the developed countries, since along ago there has been a storage technology known as controlled atmosphere storage (CAS), however this technology is very complicated and very expensive to build. As an alternative, MAS seems to be possible to develope for developing country as Indonesia, since MAS doesn-t need a precise controlled of the gas composition continuously and much cheaper than CAS. The purpose of this study was to develope and investigate a method including the equipment to store fresh agricultural produtcs which could be modify the gas composition and temperature inside the storage room, which was know as MAS. Reseach had been carried out by constructing the MAS equipment first. The equipment made from available components from the local marked such as wood board, heat insulator, refrigeration unit, nitrogen gas tank, carbon dioxide gas tank, oxygen gas tank, pipes and so on. Then continued by examining the constructed equipment to create various gas composition and storage temperature inside the storage room as required for storage of fresh products. It was found that both temperature and gas composition could be created as required manualy by choosing intended temperature level and regulating gas flow from the tank. Concentration of oxygen inside storage room could be reduced by flushing nitrogen gas from the tank until the intended value was reached. As lower oxygen concentration was the main factor to reduce respiration rate, while nitrogen gas was known as an inert gas this meant that the created of gas composition to extend shelf life of agricultural product definetely could be resulted. It was found that resulted gas compisition could be maintained around one day and need to be adjusted again to the intended composition after that. The next research would be conducted to examine the performance of the equipment using fresh product inside the storage room. This research was still in progress using tomato as the sample. Some parameters would be measured both dealing with the performance of the equipment and physical properties of the stored fresh product. The combination of gas composition and temperature inside storage room of MAS would be investigated applying factorial design experiment 3 x 4 with three replication. The resulted data would be analyzed both statisticaly and mathematically including the application of kinetics modeling.

Keywords: modified, atmosphere, storage, tomatoes, kinetics

Topic: Agricultural Engineering

Link: https://ifory.id/abstract/HxcpzV6CvM34

Conference: The 4th International Conference on Green Agro-industry UPN Veteran Yogyakarta (ICGAI 2019)

Plain Format | Corresponding Author (Eusabius Paul Pega)

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