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A Study on the Application of CO2-Modified Atmosphere Combined with Temperature-Control Technology in Rice Warehouse

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Combining carbon dioxide (CO2) modified atmosphere and temperature-controlled (TC) storage significantly preserves rice quality and nutritional value over 360 days. This integrated green grain storage technology effectively inhibits fungal growth and mycotoxin accumulation.

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Area of Science:

  • Agricultural Science
  • Food Science
  • Biotechnology

Background:

  • Green grain storage technologies like carbon dioxide (CO2) modified atmosphere and temperature-controlled (TC) storage are gaining prominence.
  • Limited research exists on the integrated application of CO2 + TC storage for grains.

Purpose of the Study:

  • To evaluate the efficacy of combined CO2 + TC storage on rice quality dynamics and microbial activity over 360 days.
  • To compare CO2 + TC storage with conventional storage methods.

Main Methods:

  • Rice quality parameters (color, fatty acid value, yield, germination) were monitored.
  • Microbial activity, including fungal proliferation (Fusarium, Aspergillus) and aflatoxin B1 accumulation, was assessed.
  • Non-targeted metabolomics was employed to analyze metabolic pathway alterations.

Main Results:

  • CO2 + TC storage preserved rice color, retarded fatty acid value increase, and maintained higher brown rice yield, head rice yield, and germination percentage compared to control.
  • CO2 + TC storage effectively suppressed Fusarium and Aspergillus proliferation, inhibiting aflatoxin B1 accumulation.
  • Metabolomics revealed enhanced antioxidant capacity and disease resistance in rice under CO2 + TC storage due to modulated metabolic pathways.

Conclusions:

  • Integrated CO2 + TC storage is a highly effective green technology for maintaining stored rice quality and nutritional value.
  • This method delays quality deterioration by inhibiting microbial spoilage and enhancing the rice's intrinsic defense mechanisms.
  • The findings provide a novel perspective and mechanistic understanding for advanced grain storage solutions.