乳状液
壳聚糖
柠檬烯
化学
纳米颗粒
抗氧化剂
核化学
均质化(气候)
皮克林乳液
化学工程
材料科学
色谱法
纳米技术
精油
有机化学
工程类
生物多样性
生态学
生物
作者
Qian Li,Rui Li,Fanxing Yong,Qiaoli Zhao,Jing Chen,Xing Lin,Ziyu Li,Zhuo Wang,Baojun Xu,Saiyi Zhong
出处
期刊:Foods
[MDPI AG]
日期:2024-02-19
卷期号:13 (4): 622-622
被引量:2
标识
DOI:10.3390/foods13040622
摘要
Pickering emulsions (PEs) have been regarded as an effective approach to sustaining and preserving the bioactivities of essential oils. The aim of this research is to prepare a PE stabilized by chitosan/alginate nanoparticles (CS-SA NPs) for the encapsulation and stabilization of D-limonene. In this work, the influence of calcium ions (Ca2+) on the morphology and interaction of nanoparticles was studied, and then the preparation technology of CS-SA/Ca2+ NPs was optimized. The results showed that the presence of Ca2+ reduced the size of the nanoparticles and made them assume a spherical structure. In addition, under the conditions of 0.2 mg/mL CaCl2, 0.6 mg/mL SA, and 0.4 mg/mL CS, the CS-SA/Ca2+ NPs had the smallest size (274 ± 2.51 nm) and high stability (−49 ± 0.69 mV). Secondly, the PE was prepared by emulsifying D-limonene with CS-SA/Ca2+ NPs, and the NP concentrations and homogenization speeds were optimized. The results showed that the small droplet size PE could be prepared with 2 mg/mL NP and a homogenization speed of 20,000 r/min, and it had excellent antibacterial and antioxidant activities. Most importantly, the emulsion showed higher activity, higher resistance to ultraviolet (UV) and a higher temperature than free D-limonene. This research provides a feasible solution for the encapsulation, protection and delivery of essential oils.
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