Development of a natural air-drying and low-temperature storage facility for paddy rice

K. I M Young Keun, Jung Seob Choe, Hong Sun Yoon, Eiji Inoue

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

This research aimed at developing natural air-drying and low-temperature storage facility for paddy rice to dry harvested paddy rice by natural ventilation at ambient temperature and then store paddy rice at constant low temperature year-round to prevent influence of changes in external temperature and thereby maintain quality of the paddy rice over extended period of time. Results of the research are presented below. 1. The developed and manufactured prototype (natural air-drying and low-temperature storage facility for paddy rice) monitors temperature of the grain and inside the storage during high-temperature season starting in April and automatically operates cooler unit to maintain temperature of the grain in the storage bin and throughout the whole storage below 15°C all year round. 2. By measuring germination rate, water content, crack rate, fat acidity, and milling yield of paddy rice stored in the prototype for each storage period, changes were significantly small compared to storage by natural air-drying alone. It was thus concluded that excellent quality of paddy rice upon harvest can be maintained over extended period of time using the developed prototype. 3. Economic analysis of the prototype showed that it maintained quality of the paddy rice higher than the traditional natural air-drying method to enhance their price, leading to annual profit of 1,343 thousand won for storing 10 ton of paddy rice.

Original languageEnglish
Pages (from-to)61-67
Number of pages7
JournalJournal of the Faculty of Agriculture, Kyushu University
Volume58
Issue number1
Publication statusPublished - Feb 2013

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Biotechnology

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