Zhang Miaomiao, Mukhamed Bauyrzhan, Yang Qinghua, Luo Yan, Tian Lixin, Yuan Yuhao, Huang Yani, Feng Baili
State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Xianyang 712100, China.
Foods. 2023 Aug 9;12(16):3009. doi: 10.3390/foods12163009.
The overuse of nitrogen fertilizers has led to environmental pollution, which has prompted the widespread adoption of biochar as a soil conditioner in agricultural production. To date, there has been a lack of research on the effects of biochar and its combination with nitrogen fertilizer on the quality of broomcorn millet ( L.) starch. Thus, this study examined the physicochemical characteristics of starch in two types of broomcorn millet (waxy and non-waxy) under four different conditions, including a control group (N0), nitrogen fertilizer treatment alone (N150), biochar treatment alone (N0+B), and a combination of biochar and nitrogen fertilizer treatments (N150+B). The results showed that, in comparison to the control, all the treatments, particularly N150+B, decreased the content of amylose and gelatinization temperature and enhanced the starch transparency gel consistency and swelling power. In addition, biochar can improve the water solubility of starch and the gelatinization enthalpy. Importantly, the combination of biochar and nitrogen fertilizer increased the proportion of A-granules, final viscosity, starch content, and the average degree of amylopectin in polymerization. Thus, this research indicates that the combinations of biochar and nitrogen fertilizer result in the most significant improvement in the quality of starch produced from broomcorn millet.
氮肥的过度使用导致了环境污染，这促使生物炭作为土壤改良剂在农业生产中被广泛采用。迄今为止，关于生物炭及其与氮肥组合对黍（L.）淀粉品质的影响缺乏研究。因此，本研究考察了在四种不同条件下两种黍（糯性和非糯性）淀粉的理化特性，包括对照组（N0）、单独氮肥处理（N150）、单独生物炭处理（N0+B）以及生物炭与氮肥组合处理（N150+B）。结果表明，与对照相比，所有处理，尤其是N150+B，降低了直链淀粉含量和糊化温度，提高了淀粉透明度、凝胶稠度和膨胀力。此外，生物炭可提高淀粉的水溶性和糊化焓。重要的是，生物炭与氮肥的组合增加了A-颗粒比例、最终粘度、淀粉含量以及支链淀粉的平均聚合度。因此，本研究表明，生物炭与氮肥的组合对黍产生的淀粉品质改善最为显著。
