Ultrasonic preparation, structural characterization and functional enhancement of thyme essential oil-loaded microcapsules based on mannosylerythritol lipid-A

IF 9.7 1区化学 Q1 ACOUSTICS Ultrasonics Sonochemistry Pub Date : 2025-02-09 DOI:10.1016/j.ultsonch.2025.107265

Shunjie Kang , Qihe Chen , Haorui Ma , Jiwei Ding , Changchun Hao , Qin Shu , Yongfeng Liu

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Abstract

Mannosylerythritol lipid-A (MEL-A) is a kind of novel biosurfactant and has great potential to apply into food and pharmaceutical field with its outstanding physicochemical and biological property. In this study, Thyme essential oil (TEO) microcapsules based on MEL-A were prepared through ultrasonic emulsification and characterized by size, morphology, structure, antioxidant and antibacterial activity. The results showed the optimal preparation condition was the duration of 15 min and power intensities of 400 W/cm² through ultrasound treatment, improving the solubility and applicability of TEO. Further experiment explored the physicochemical properties and biological activity of TEO microcapsules, measuring a particle size of 276.19 ± 1.72 nm with good dispersibility. FT-IR, X-ray, and TEM confirmed the successful encapsulation of the essential oil within the microcapsules. Meanwhile, the antioxidant and antibacterial properties of microcapsules were assayed and microcapsules with 7 % MEL-A exhibited better antioxidant properties, while those containing 13 % MEL-A showed better antibacterial performance. In conclusion, MEL-A showed obvious structural stability and functional enhancement in TEO-loaded microcapsules, indicating that its potential applications in food preservation and food machinery sterilization are numerous.

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甘露糖赤四醇脂- a负载百里香精油微胶囊的超声制备、结构表征及功能增强

甘露糖赤四醇脂- a （MEL-A）是一种新型的生物表面活性剂，以其优异的物理化学和生物特性在食品和制药领域具有广阔的应用前景。本研究采用超声乳化法制备了基于MEL-A的百里香精油（TEO）微胶囊，并对其大小、形态、结构、抗氧化和抗菌活性进行了表征。结果表明，超声处理的最佳制备条件为持续时间15 min，功率强度400 W/cm2，提高了TEO的溶解度和适用性。进一步研究了TEO微胶囊的理化性质和生物活性，微胶囊的粒径为276.19±1.72 nm，具有良好的分散性。FT-IR， x射线和TEM证实了精油在微胶囊内的成功封装。同时，对微胶囊的抗氧化和抗菌性能进行了测试，结果表明，添加7% MEL-A的微胶囊具有较好的抗氧化性能，而添加13% MEL-A的微胶囊具有较好的抗菌性能。综上所述，MEL-A在teo负载的微胶囊中表现出明显的结构稳定性和功能增强，表明其在食品保鲜和食品机械杀菌方面的潜在应用前景广阔。

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来源期刊

Ultrasonics Sonochemistry 化学-化学综合

CiteScore

15.80

自引率

11.90%

发文量

361

审稿时长

59 days

期刊介绍： Ultrasonics Sonochemistry stands as a premier international journal dedicated to the publication of high-quality research articles primarily focusing on chemical reactions and reactors induced by ultrasonic waves, known as sonochemistry. Beyond chemical reactions, the journal also welcomes contributions related to cavitation-induced events and processing, including sonoluminescence, and the transformation of materials on chemical, physical, and biological levels. Since its inception in 1994, Ultrasonics Sonochemistry has consistently maintained a top ranking in the "Acoustics" category, reflecting its esteemed reputation in the field. The journal publishes exceptional papers covering various areas of ultrasonics and sonochemistry. Its contributions are highly regarded by both academia and industry stakeholders, demonstrating its relevance and impact in advancing research and innovation.