Genomics and Applied Biology 2026, Vol.17, No.1, 16-25 http://bioscipublisher.com/index.php/gab 23 and turning it twice a day; Farmer B sent the rice to the cooperative and used 45°C low-temperature hot air to dry it. Both methods dried the rice to a moisture content of 14% before comparison. The results were clear: the whole-grain rice yield of the drying method was only 78%, with a broken rice rate of 12%, and the rice was relatively hard; while the mechanical drying method increased the whole-grain rice yield to 88%, the broken rice rate dropped to 5%, and the taste was more elastic and glutinous (Wang et al., 2020). In terms of efficiency, the processing time for one ton of rice by group B was only one-fiftieth of that of group A. The grain temperature was more uniform, and moldiness was also less. This case demonstrates that in high-temperature and high-humidity conditions, mechanical drying has an advantage. 8 Conclusions and Recommendations Based on the common practices of farmers, namely sun-drying and mechanical drying, this paper compared the changes in rice quality. From the results, it can be seen that mechanical drying is faster and more uniform in reducing moisture content. When the moisture content is approximately 24%, the whole polished rice yield can exceed 92%, and the broken rice rate is close to 1%. At the same time, problems such as yellow grains and burst kernels have significantly decreased, and the appearance has become more stable. However, higher temperature is not always better. Although high temperature speeds up the process, it is prone to increase the fatty acid value and disrupt the internal structure. In the taste test, the mechanical-dried rice has better viscosity and elasticity, and the aroma is retained more fully. Overall, using mechanical drying under an appropriate moisture content is more likely to achieve a balance between efficiency and quality, and has more advantages over simple sun-drying. Based on the previous results, there are several key points to pay special attention to in the operation. The harvesting time of the rice should not be too early or too late. Due to different initial moisture contents, the subsequent drying parameters also need to be adjusted. The critical temperature is not fixed. When using mechanical drying, it is advisable to adopt a segmented temperature increase or intermittent ventilation method. Don't raise the temperature too quickly at once; when the moisture content drops below 20%, the heat risk should be controlled at 45-50℃ and maintained for 20-30 hours, which will result in relatively more stable efficiency and quality. If you choose to dry in the sun, the layer should be thin and uniform, and it should be frequently turned over. Cover in time when encountering moisture, and try to avoid rainy days. You can also stagger the batches with neighboring farmers. If conditions permit, small-scale drying equipment or renting socialized services can also be chosen. Combined with the agricultural machinery subsidy policy, the cost pressure can be significantly reduced. It should be noted that the analysis in this article is mainly based on hypothetical scenarios and experimental results. More on-site verification is still lacking, and the conclusions may vary under different rice varieties and climatic conditions. Future research can expand the scope and conduct field trials in different regions to see if the impact of changes in drying parameters on quality is consistent. At the same time, energy consumption and environmental protection issues during the drying process should also be paid attention to, such as energy-saving technologies like heat pumps and solar-assisted systems. In addition, the stability of storage after drying, as well as the changes in quality during processing and circulation, also need to be further tracked to provide a more complete reference for production practice. Acknowledgments I extends our sincere gratitude to the anonymous reviewers for their valuable and insightful comments, which have greatly strengthened this paper. Conflict of Interest Disclosure The author affirms that this research was conducted without any commercial or financial relationships that could be construed as a potential conflict of interest. References Chen C., Wu P., and Tang J., 2017, Design and performance evaluation of a flat-bed dryer for paddy rice, Biosystems Engineering, 162: 29-38. https://doi.org/10.1016/j.biosystemseng.2017.07.012
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