Abstract β-carotene was encapsulated in Pickering emulsions stabilized by biopolymer particles formed by wheat gluten nanoparticles (WGN) or wheat gluten nanoparticle-xanthan gum (WGN-XG) complexes. The WGN-XG emulsions had larger initial mean particle diameters (23.9 μm) than the WGN ones (9.4 μm), but they were still stable to aggregation over a wide range of pH values (4–8) and salt levels (0–1000 mM NaCl). They were also effective at protecting β-carotene from chemical degradation during storage, with around 94.3% and 70.1% of the carotenoids being retained after one-month storage at 25 and 37 °C, respectively. WGN-XG and WGN emulsions were both stable to thermal sterilization. An in vitro digestion experiment showed that β-carotene had a higher bioaccessibility in the WGN-XG emulsions than in the WGN ones. These results may facilitate the design of Pickering emulsions with high stability for nutraceutical delivery in food and supplement products.

中文翻译：

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在小麦面筋纳米颗粒-黄原胶稳定的 Pickering 乳液中包裹 β-胡萝卜素：增强类胡萝卜素的稳定性和生物可及性

摘要 β-胡萝卜素被包裹在由小麦面筋纳米颗粒 (WGN) 或小麦面筋纳米颗粒-黄原胶 (WGN-XG) 复合物形成的生物聚合物颗粒稳定的 Pickering 乳液中。WGN-XG 乳液的初始平均粒径 (23.9 μm) 比 WGN 的 (9.4 μm) 大，但它们在广泛的 pH 值 (4-8) 和盐浓度 (0-1000毫米氯化钠）。它们还可以有效地防止 β-胡萝卜素在储存过程中发生化学降解，在 25 和 37°C 下储存 1 个月后，大约 94.3% 和 70.1% 的类胡萝卜素得以保留。WGN-XG 和 WGN 乳液都对热灭菌稳定。体外消化实验表明，β-胡萝卜素在 WGN-XG 乳液中比在 WGN 乳液中具有更高的生物可及性。