Sweet tea extract encapsulated by different wall material combinations with improved physicochemical properties and bioactivity stability.

IF 3 4区医学 Q2 CHEMISTRY, APPLIED Journal of microencapsulation Pub Date : 2024-08-01 Epub Date: 2024-05-28 DOI:10.1080/02652048.2024.2357779

Qingyue Deng, Lishu Han, Chengjiang Tang, Yue Ma, Shuibing Lao, Douyong Min, Xiaoling Liu, Hongrui Jiang

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Abstract

Aim: To prepare sweet tea extract microcapsules (STEMs) via a spray-drying by applying different wall material formulations with maltodextrin (MD), inulin (IN), and gum arabic (GA). Methods: The microcapsules were characterised by yield, encapsulation efficiency (EE), particle size, sensory evaluation, morphology, attenuated total reflectance-Fourier transform infra-red spectroscopy and in vitro digestion studies. Results: The encapsulation improved the physicochemical properties and bioactivity stability of sweet tea extract (STE). MD5IN5 had the highest yield (56.33 ± 0.06% w/w) and the best EE (e.g. 88.84 ± 0.36% w/w of total flavonoids). MD9GA1 obtained the smallest particle size (642.13 ± 4.12 nm). MD9GA1 exhibited the highest retention of bioactive components, inhibition of α-glucosidase (96.85 ± 0.55%), α-amylase (57.58 ± 0.99%), angiotensin-converting enzyme (56.88 ± 2.20%), and the best antioxidant activity during in vitro gastrointestinal digestion. Conclusion: The encapsulation of STE can be an appropriate way for the valorisation of STE with improved properties.

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不同壁材组合封装的甜茶提取物具有更好的理化特性和生物活性稳定性。

目的：采用麦芽糊精（MD）、菊粉（IN）和阿拉伯树胶（GA）等不同壁材配方，通过喷雾干燥法制备甜茶提取物微胶囊（STEMs）。方法：通过产量、封装效率（EE）、粒度、感官评估、形态、衰减全反射-傅立叶变换红外光谱和体外消化研究对微胶囊进行表征。研究结果封装提高了甜茶提取物（STE）的理化性质和生物活性稳定性。MD5IN5 的产量最高（56.33 ± 0.06% w/w），EE 最好（如总黄酮含量为 88.84 ± 0.36% w/w）。MD9GA1 的粒径最小（642.13 ± 4.12 nm）。MD9GA1 的生物活性成分保留率最高，对α-葡萄糖苷酶（96.85 ± 0.55%）、α-淀粉酶（57.58 ± 0.99%）和血管紧张素转化酶（56.88 ± 2.20%）的抑制率最高，在体外胃肠道消化过程中的抗氧化活性最好。结论封装 STE 是提高 STE 价值并改善其特性的适当方法。

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来源期刊

Journal of microencapsulation 工程技术-工程：化工

CiteScore

6.30

自引率

2.60%

发文量

审稿时长

3 months

期刊介绍： The Journal of Microencapsulation is a well-established, peer-reviewed journal dedicated to the publication of original research findings related to the preparation, properties and uses of individually encapsulated novel small particles, as well as significant improvements to tried-and-tested techniques relevant to micro and nano particles and their use in a wide variety of industrial, engineering, pharmaceutical, biotechnology and research applications. Its scope extends beyond conventional microcapsules to all other small particulate systems such as self assembling structures that involve preparative manipulation. The journal covers: Chemistry of encapsulation materials Physics of release through the capsule wall and/or desorption from carrier Techniques of preparation, content and storage Many uses to which microcapsules are put.