Abstract

Post-harvest operations can reduce changes in the physical-chemical quality of processed grains. Thus, this study aimed to evaluate the effects of drying and storage conditions on the lipids and starches content in corn grains correlating ethanol production. In the results obtained, the adjustment of the drying curves associated with physical analyses made it possible to verify that the increase in temperature affected the grains’ cell tissues and reduced lipids, starches, and the industrial yield of ethanol for 0.032 L kg⁻¹ of grains. Besides, the corn storage under refrigeration was favorable to maintaining the levels of lipids (+1.42%), starch (+1.33%), and ethanol yield (+0.017 L kg⁻¹ of grains). In conclusion, the drying temperature at 40 °C and the controlled storage at 15 °C preserved the corn grain quality over the six months and positively influenced the grain processing quality. The adverse environmental conditions associated with the post-harvest technologies do not guarantee the quality of the corn grains used for the processing industry. In the current Brazilian situation, the corn ethanol industry improvement involves the application of low temperature in drying systems and the storage of corn in controlled environments.

摘要

收获后的操作可以减少加工谷物的物理化学质量的变化。因此，本研究旨在评估干燥和储存条件对与乙醇生产相关的玉米粒中脂质和淀粉含量的影响。在获得的结果中，与物理分析相关的干燥曲线的调整使得可以验证温度的升高影响谷物的细胞组织并降低了脂质、淀粉和 0.032 L kg ^-1乙醇的工业产量。谷物。此外，冷藏玉米有利于维持脂质（+1.42%）、淀粉（+1.33%）和乙醇产量（+0.017 L kg ^-1谷物）。总之，40°C 的干燥温度和 15°C 的受控储存在六个月内保持了玉米籽粒质量，并对谷物加工质量产生了积极影响。与收获后技术相关的不利环境条件并不能保证用于加工工业的玉米粒的质量。在巴西目前的情况下，玉米乙醇行业的改善涉及在干燥系统中应用低温以及在受控环境中储存玉米。