马永强,黎晨晨,王鑫,王艺锜.番茄红素微乳液制备及降解动力学研究[J].包装工程,2023,44(5):139-148.
MA Yong-qiang,LI Chen-chen,WANG Xin,WANG Yi-qi.Preparation and Degradation Kinetics of Lycopene Microemulsion[J].Packaging Engineering,2023,44(5):139-148. |
| 番茄红素微乳液制备及降解动力学研究 |
| Preparation and Degradation Kinetics of Lycopene Microemulsion |
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| DOI：10.19554/j.cnki.1001-3563.2023.05.018 |
| 中文关键词: 番茄红素晶体 微乳液 伪三元相图 降解动力学 |
| 英文关键词: lycopene crystal microemulsion pseudo-ternary phase diagram degradation kinetics |
| 基金项目:哈尔滨商业大学研究生创新科研基金项目(YJSCX2019-566HSD) |
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| 中文摘要: |
| 目的 设计一种包埋手段，最大限度地提高番茄红素的稳定性，延缓番茄红素降解速率，从而扩大番茄红素的应用。方法 以番茄红素晶体为目标芯材，利用伪三元相图获得番茄红素微乳液的最佳配方。利用光降解和热降解动力学模型，探究番茄红素晶体包埋前后的光、热稳定性。结果 制备番茄红素微乳液的最佳配方:油相为乙酸乙酯，表面活性剂为吐温60，助表面活性剂为无水乙醇，表面活性剂与助表面活性剂之比(Km)为2∶1，此时形成的微乳面积最大为53.05%。番茄红素微乳液中番茄红素的质量浓度为352.90 μg/mL，平均粒径为13.22 nm，聚合物分散性指数(PDI)为0.054 8，其构相为O/W型微乳液。制备的番茄红素微乳液具有良好离心稳定性和贮藏稳定性。在不同光照时间和温度处理下，其降解均符合一级降解动力学规律，且微乳中番茄红素降解速率小于番茄红素晶体降解速率。结论 番茄红素被微乳液包埋后提高了水溶性、稳定性，同时能够有效延缓番茄红素晶体的光降解和热降解速率，对番茄红素起到保护作用。 |
| 英文摘要: |
| The work aims to design an encapsulation technique to improve the stability of lycopene to the maximum extent and delay the degradation rate of lycopene, thus expanding the application of lycopene. With lycopene crystal as the target core material, the optimal formula of lycopene microemulsion was obtained by pseudo-ternary phase diagram. The light and thermal stability of lycopene before and after encapsulation was investigated by the kinetic model of photodegradation and thermal degradation. The optimal formula of lycopene microemulsion was as follows:ethyl acetate as oil phase, Tween 60 as surfactant, anhydrous ethanol as cosurfactant, and ratio of surfactant to cosurfactant (Km) as 2∶1. Under this condition, the maximum microemulsion area was 53.05%, the content of lycopene in lycopene microemulsion was 352.90 μg/mL, the average particle size was 13.22 nm, the PDI was 0.054 8, and O/W microemulsion was obtained which had good centrifugal stability and storage stability. After illumination for different time and treatments at different temperature, the degradation of lycopene conformed to the first-order degradation kinetics and the degradation rate of lycopene in microemulsion was lower than that of lycopene crystal. The water solubility and stability of lycopene encapsulated in microemulsion is improved, and the encapsulation can effectively delay the light and thermal degradation rate of lycopene crystal, thus protecting the lycopene. |
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