규산질 비료 시용이 쌀 품질 및 저장 특성에 미치는 영향

Effect of Silicate Application on Grain Quality and Storage Characteristics in Rice

  • Won, Jong-Gun (Gyeongbuk Agricultural Research & Extension Services) ;
  • Kim, Se-Jong (Gyeongbuk Agricultural Research & Extension Services) ;
  • Ahn, Duok-Jong (Gyeongbuk Agricultural Research & Extension Services) ;
  • Seo, Young-Jin (Gyeongbuk Agricultural Research & Extension Services) ;
  • Choi, Chung-Don (Gyeongbuk Agricultural Research & Extension Services) ;
  • Lee, Sang-Chul (Division of Plant Bioscience, College of Agriculture and Life Science, Kyungpook National University)
  • 발행 : 2008.12.31

초록

규산 시용에 따른 수량 및 미질 관련해서는 많이 보고되고 있지만 도정 특성과 관련된 보고와 특히 저장관련 자료가 거의 없어 이에 대한 연구를 수행하여 다음과 같은 결과를 얻었다. 1. 수량 및 수량구성요소에서는 규산 시용구에서 수수 및 영화수가 증가하였으며, 등숙비율도 2%이상 증가하여 완전미 수량은 $7.7{\sim}9.5%$정도 증가하였다. 2. 미질 특성의 이화학적 성분 함량은 규산시용에 따라 단백질 함량은 $0.2{\sim}0.3%$ 감소하였으며, 쌀의 외관상 품위 변화는 시용량이 증가할수록 분상질립 및 피해립율이 감소되면서 완전미의 비율이 규산 무시용(83.2%)에 비해 규산 1배 시용시 85.6%, 1.5배 시용시 86.4%, 2배 시용시 88.7%로 높아지는 효과가 있었다. 3. 규산을 시용함에 따른 색체 선별율은 $4.2{\sim}7.2%$ 향상되었고, 색미율은 $5.5{\sim}16.6%$ 낮아져 완전미 도정수율은 $5.5{\sim}8.6%$향상되었다. 4. 규산 시용에 따른 저장성 변화에 있어서 지방산도는 저온 저장($15^{\circ}C$)에서는 저장기간에 따른 큰 변화는 없었으나, 상온저장에서는 6월 이후 증가하여 노화가 급격하게 진행되었다. 5. 쌀의 pH에 의한 최상위 등급 비율은 저온 저장에서는 9월 이후부터 낮아지는 경향이나, 상온 저장에서는 6월부터 급격히 낮아져 신선도가 현저히 저하되었으며, 저온과 상온 저장 모두 규산 시용구에서 쌀의 신선도가 무시용구에 비하여 오래 지속되는 경향이었다.

This study was carried out to clarify the effect of silicate application on rice grain quality and storage characteristics in Ilpumbyeo cultivar. In yield and yield components, panicles and spikelet numbers were increased and ripened grain rate was also increased by 2%. Head rice yield was increased by $7.7{\sim}9.5%$ in silicate application. Protein content of milled rice was reduced by $0.2{\sim}0.3%$ and head rice rate was increased by $2.9{\sim}6.7%$ in silicate application due to decrease of chalky and damaged rice rate. In milling characteristics, color separation rate was improved by $4.2{\sim}7.2%$ and colored rice rate was decreased by $5.5{\sim}16.6%$ in silicate application. Acid value of stored brown rice were increased slowly in low temperature and silicate application, but that in room temperature and no silicate application was increased remarkably. The best degree rate of stored brown rice (over than 7.5 of pH) measured by the pH of grain was increased by the silicate application in both low and room temperature. Therefore, it was suggested that the storage characteristics of rice grain was improved by the silicate application.

키워드

참고문헌

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