Comparison of the Carbon Dioxide Output(LC-CO<sub>2</sub>) in the Production and Use of No-wash Rice and Conventional Rice

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  • 無洗米，普通米の製造・利用におけるライフサイクルCO<sub>2</sub> 排出量
  • 無洗米,普通米の製造・利用におけるライフサイクルC02排出量
  • ムセンマイ フツウ マイ ノ セイゾウ リヨウ ニ オケル ライフサイクル C02 ハイシュツリョウ

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The carbon dioxide output(LC-CO2) was analyzed for both no-wash rice and conventional rice from the beginning of the polishing process up to the start of cooking in order to assess the environment benefit of no-wash rice.<br>Of the four different methods for producing no-wash rice, we focused on the bran grind(BG) process for which fuel-consumption data is publicly available. After excluding those processing steps which are common to the production of both no-wash and conventional rice, we found that BG no-wash rice produced 0.016 kg of CO2/kg of rice compared to 0.078 kg of CO2/kg of conventional rice. Hence, the BG production method yields a 20% reduction in CO2 emissions compared to conventional rice production. In addition to the savings in labor, water and time afforded by no-wash rice, which needs no washing before cooking, we conclude that using BG no-wash rice instead of conventional rice is an effective way to reduce CO2 emissions.

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