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Determination of Apparent Amylose Content in Rice by Using Paper-Based Microfluidic Chips
Xianqiao Hu1,2, Lin Lu1,2, Changyun Fang1,2
1China National Rice Research Institute , Hangzhou 310006, China.
Journal of Agricultural and Food Chemistry
|October 27, 2015
Summary
A new paper-based microfluidic chip method accurately determines apparent amylose content in rice. This innovative approach simplifies analysis for rice research and industry applications.
Area of Science:
- Analytical Chemistry
- Materials Science
Background:
- Accurate determination of apparent amylose content is crucial for rice research and the food industry.
- Conventional methods can be complex and time-consuming.
Purpose of the Study:
- To develop a novel, simplified method for determining apparent amylose content in rice using a paper-based microfluidic chip.
- To optimize the on-chip color reaction and analysis process.
Main Methods:
- Utilized a paper-based microfluidic chip for on-chip color reaction between amylose and iodine.
- Developed in situ iodine generation for the color reaction.
- Employed Photoshop for color conversion (blue to gray) and analysis after scanning the colored chip.
- Investigated and optimized factors influencing the color reaction and addressed excess iodine interference.
Main Results:
- Successfully determined apparent amylose content in rice samples ranging from 1.5% to 26.4%.
- Achieved a precision of 6.3% for the developed method.
- Demonstrated good agreement between the developed approach and the continuous flow analyzer method.
Conclusions:
- The paper-based microfluidic chip offers a novel and effective approach for apparent amylose content determination in rice.
- This method simplifies the analytical process and shows potential for widespread use in the rice industry and research.

