Formulation characteristics of monodisperse structured lipid microparticles using microchannel emulsification

Formulation characteristics of monodisperse structured lipid microparticles using microchannel emulsification
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利用微通道乳化法制备单分散结构脂质微粒的制剂特性

DOI:
10.1080/02726351.2021.1929612
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发表时间:
2021
影响因子:
2.5
通讯作者:
Isao Kobayashi
Isao Kobayashi
中科院分区:
工程技术4区
文献类型:
--
作者:
Hanxiao Wang;Mitsutoshi Nakajima;Marcos A. Neves;Kunihiko Uemura;Setsuko Todoriki;Isao Kobayashi

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由油脂和固体油脂按特定比例组成的结构脂质微颗粒(StLMs)因其负载稳定性和释放生物活性化合物的可控性而备受关注。在这项研究中,我们使用微通道乳化(MCE)在~ 70°C下制备了棕榈酸或三棕榈醇与豆油以不同比例混合的单分散stlm,然后通过冷却结晶。基于不同分散相的物理化学性质,利用与MCE系统连接的显微镜视频系统对配方特性进行了观察和研究。在~ 70°C温度下,脂滴的平均直径和变异系数分别为15.5 ~ 19.0 μm和3.3 ~ 8.4%。液滴冷却结晶后,StLMs的形态发生了变化,但平均尺寸和CV的变化可以忽略不计。从各脂质分子的内部结构和差示扫描量热法(DSC)实验提供的基本信息出发,提出了脂质分子形态变化的假设,为stlm的包封研究提供参考。
Structured lipid microparticles (StLMs) composed of oil and solid lipid in specific ratios are drawing significant attention, owing to their stability in loading and controllability in releasing bioactive compounds. In this study, we formulated monodisperse StLMs with palmitic acid or tripalmitin mixed with soybean oil in different ratios using microchannel emulsification (MCE) at ∼70 °C and following crystallization by cooling. Based on the physicochemical properties of the different dispersed phases, the formulation characteristics were observed and investigated using a microscope video system connected to the MCE system. For each ratio and composition at ∼70 °C, the lipid droplets presented average diameter and coefficient of variation (CV) values in respective ranges of 15.5–19.0 μm and 3.3–8.4%. Following droplet crystallization by cooling, the StLMs exhibited morphological changes but negligible changes in average size and CV. From the internal structure of each lipid molecular and the fundamental information supplied by differential scanning calorimetry (DSC) experiments, we outline the assumptions for morphology variation, which can be used as reference for encapsulation research of StLMs.
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