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Discrimination analysis of new rice, stale rice, and their mixture using an electronic eye

전자눈을 이용한 햅쌀, 묵은쌀 및 이의 혼합쌀 판별 분석

  • Hong, Jee-Hwa (Experiment Research Institute, National Agricultural Products Quality Management Service) ;
  • Lee, Jae-Hwon (Experiment Research Institute, National Agricultural Products Quality Management Service) ;
  • Cho, Young-Ho (Centum-Tech) ;
  • Choi, Kyung-Hu (Experiment Research Institute, National Agricultural Products Quality Management Service) ;
  • Lee, Min-Hui (Experiment Research Institute, National Agricultural Products Quality Management Service) ;
  • Park, Young-Jun (Experiment Research Institute, National Agricultural Products Quality Management Service) ;
  • Kim, Hyun-Tae (Experiment Research Institute, National Agricultural Products Quality Management Service)
  • 홍지화 (국립농산물품질관리원 시험연구소) ;
  • 이재훤 (국립농산물품질관리원 시험연구소) ;
  • 조영호 (센텀테크) ;
  • 최경후 (국립농산물품질관리원 시험연구소) ;
  • 이민휘 (국립농산물품질관리원 시험연구소) ;
  • 박영준 (국립농산물품질관리원 시험연구소) ;
  • 김현태 (국립농산물품질관리원 시험연구소)
  • Received : 2017.05.02
  • Accepted : 2017.08.14
  • Published : 2017.10.31

Abstract

The objective of this study was to develop methods for the discrimination of new and stale rice by using an electronic eye. To develop the discriminant, 107 rice samples produced in the years 2015 and 2016 were investigated. After the rice was treated with guaiacol, oxydol, and p-phenylenediamine reagents, an electronic eye was applied to discriminate between newly harvested rice and rice stored for 1 year. Out of the 4,096 color codes of the electronic eye, 31 color codes were identified for the discrimination of newly harvested rice and rice stored for 1 year. The classification ratio of newly harvested rice and rice stored for 1 year was 100% and the discrimination accuracy for unknown samples was 100%. In a total of 150 mixtures of new rice and stale rice, the discrimination accuracy was between 16.7 and 95.6%, depending on the mixing ratio. This capability of the electronic eye will be useful as a tool for discriminating the production year of rice.

본 연구는 햅쌀과 묵은쌀 및 이의 혼합곡 판별을 위하여 전자 눈 분석을 이용한 쌀 신곡과 구곡 판별법 개발 연구를 수행하였다. 국내에서 수집된 신구곡을 대상으로 GOP 시약처리를 통해 효소 활성에 따른 정색 반응을 확인한 후 전자눈 장비를 이용하여 신곡과 구곡의 판별에 적합한 색깔 코드의 선별과 이를 이용한 쌀 신곡과 구곡의 판별법을 개발하였다. 미지시료를 이용하여 판별 정확도를 분석한 결과 신곡과 구곡인 단일곡은 100%의 정확도로 판별이 되었으나 혼합곡의 경우 혼합된 비율에 따라 판별 정확도가 달라졌다. 혼합곡은 신곡과 구곡의 혼합 비율에서 구곡이 비율이 높아질수록 판별 정확도가 높아지는 것으로 나타났다. 이러한 결과를 통해 전자눈 분석을 통하여 햅쌀과 묵은쌀을 판별할 수 있는 실용적인 판별 체계를 구축하였으므로 본 연구를 통해 개발된 판별식은 쌀 신구곡 판별을 위한 과학적인 근거자료로서 활용이 가능할 것으로 판단된다.

Keywords

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