In this work, Pickering emulsions were successfully prepared using a new Pickering stabilizer prepared from starch nanocrystals by alkaline treatment. Starch nanocrystals produced from different sources (waxy maize starch, NWS; normal maize starch, NCS) were treated with ammonia to investigate the differences in emulsifying properties of the resulting starch nanocrystals (TSNCnc, produced from NCS; TSNCwc, produced from NWS). The results of visual observation and confocal laser scanning microscopy revealed that alkaline treatment increased the Pickering-stabilizing capacity of starch nanocrystals, irrespective of starch type. The droplet size of Pickering emulsion stabilized by TSNCwc was about 5.29 μm, while droplets stabilized by TSNCnc were about 70.52 μm. The big difference between the droplet size of emulsions stabilized by TSNCnc and TSNCwc was attributed to the structural differences between the two kinds of maize starch. The droplet size of Pickering emulsion stabilized by TSNCwc was significantly smaller than that of Pickering emulsion stablilized by SNCwc. Zetasizer, transmission electron microscopy and scanning electron microscopy results showed that alkaline treatment decreased the particle size of starch nanocrystals. The present study paves the way for finding new approaches to prepare starch nanocrystals-based Pickering emulsions possessing small droplet sizes.

中文翻译：

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使用碱性溶液处理的淀粉纳米晶体稳定Pickering乳液。

在这项工作中，使用一种新的Pickering稳定剂成功地制备了Pickering乳液，该稳定剂由淀粉纳米晶体经碱处理制得。用氨处理从不同来源（糯玉米淀粉，NWS；普通玉米淀粉，NCS）生产的淀粉纳米晶体，以研究所得淀粉纳米晶体（TSNCnc，由NCS生产； TSNCwc，由NWS生产）的乳化性能差异。目视观察和共聚焦激光扫描显微镜的结果表明，碱处理提高了淀粉纳米晶体的Pickering稳定能力，而与淀粉类型无关。TSNCwc稳定的Pickering乳液的液滴尺寸约为5.29μm，TSNCnc稳定的液滴的尺寸约为70.52μm。用TSNCnc和TSNCwc稳定的乳剂液滴大小之间的较大差异是由于这两种玉米淀粉之间的结构差异。TSNCwc稳定的Pickering乳液的液滴尺寸明显小于SNCwc稳定的Pickering乳液的液滴尺寸。Zetasizer，透射电子显微镜和扫描电子显微镜的结果表明，碱处理降低了淀粉纳米晶体的粒径。本研究为寻找新方法以制备具有小液滴尺寸的基于淀粉纳米晶体的Pickering乳液铺平了道路。Zetasizer，透射电子显微镜和扫描电子显微镜的结果表明，碱处理降低了淀粉纳米晶体的粒径。本研究为寻找新方法以制备具有小液滴尺寸的基于淀粉纳米晶体的Pickering乳液铺平了道路。Zetasizer，透射电子显微镜和扫描电子显微镜结果表明，碱处理降低了淀粉纳米晶体的粒径。本研究为寻找新方法以制备具有小液滴尺寸的基于淀粉纳米晶体的Pickering乳液铺平了道路。