Abstract：
Buckwheat starch has attracted worldwide attention in the food industry as a valuable raw material or food additive. Nitrogen (N) and sulfur (S) are two nutrients essential to ensure grain quality. This study investigated the combined application of N fertilizer (0, 45 and 90 kg N ha-1) and S fertilizer (0 and 45 kg SO3 ha-1) on the chemical composition, structure and physicochemical properties of buckwheat starch. The results showed that increasing the fertilizer application decreased amylose content and starch granule size but increased light transmittance, water solubility and swelling power. The stability of the absorption peak positions and the decrease in short-range order degree suggested that fertilization influenced the molecular structure of buckwheat starch. In addition, increases in viscosity and gelatinization enthalpy as well as decreases in gelatinization temperatures and dynamic rheological properties indicated changes in the processing characteristics and product quality of buckwheat-based foods.
摘要：
荞麦淀粉作为一种有价值的原料或食品添加剂在食品工业中引起了全世界的关注。氮（N）和硫（S）是确保谷物品质所必需的两种营养素。本研究调查了氮肥（0、45和90kgNha-1）和S肥（0和45kgSO3ha-1）的化学组成，荞麦淀粉的结构和理化性质.结果表明，增加施肥量降低了直链淀粉含量和淀粉颗粒大小，但增加了透光率，水溶性和膨胀力。吸收峰位置的稳定性和短程有序度的降低表明施肥影响了荞麦淀粉的分子结构。此外,粘度和糊化焓的增加以及糊化温度和动态流变特性的降低表明荞麦基食品的加工特性和产品质量发生了变化。
