PDF(Pubmed)
Abstract：
Wheat (Triticum aestivum L.) stands as a significant cereal crop globally, including in Korea, where its consumption reached 35.7 kg per capita in 2023. In the southern regions of Korea, wheat cultivation follows paddy rice, with harvesting typically occurring during the rainy season in mid-June. This timing, coupled with the high humidity and unpredictable rainfall, often leads to pre-harvest sprouting and subsequent deterioration in flour quality. To assess the impact of rain on flour quality, an artificial rain treatment was administered 45 days after heading in an open field greenhouse, followed by flour quality analysis. The color measurement revealed an increase in the L* parameter, indicative of enhanced kernel vitreousness, attributed to endosperm starch degradation via alpha-amylase activation induced by water absorption. Moreover, significant changes were observed in ash content and the gluten index within the wetted group, resulting in decreased dough strength and stability, ultimately leading to a reduction in loaf volume. Consequently, it is recommended that wheat be harvested 4-7 days after reaching the physiological maturity stage to avoid the rainy season and ensure the production of high-quality wheat.
摘要：
小麦(TriticumaestivumL.)是全球重要的谷类作物，包括在韩国,2023年人均消费量达到35.7公斤。在韩国南部地区,小麦种植紧随水稻，收获通常发生在6月中旬的雨季。这个时机,再加上高湿度和不可预测的降雨，通常会导致收获前发芽和随后的面粉质量恶化。为了评估雨水对面粉品质的影响，在露天温室抽穗后45天进行人工降雨处理，其次是面粉质量分析。颜色测量显示L*参数增加，表明内核玻璃化增强，归因于胚乳淀粉通过吸水诱导的α-淀粉酶活化降解。此外，在湿润组中观察到灰分含量和面筋指数的显着变化，导致面团强度和稳定性下降，最终导致面包体积的减少。因此,建议小麦在达到生理成熟期后4-7天收获，以避免雨季，确保优质小麦的生产。
