叶黄素在黄原胶和藻酸丙二醇酯制备的 O/W 乳剂中的稳定性。
Stability of lutein in O/W emulsion prepared using xanthan and propylene glycol alginate.
机构信息
College of Food Science, Hainan University, No.58 Renmin Avenue, Haikou 570228, China.
College of Food Science, Hainan University, No.58 Renmin Avenue, Haikou 570228, China; Engineering Research Center of Utilization of Tropical Polysaccharide Resources, Ministry of Education, No.58 Renmin Avenue, Haikou 570228, China.
出版信息
Int J Biol Macromol. 2020 Jun 1;152:371-379. doi: 10.1016/j.ijbiomac.2020.02.162. Epub 2020 Feb 19.
Lutein is a hydrophobic carotenoid with diverse bioactivities. For encapsulating the molecule in a novel method, we prepared two emulsions from xanthan and propylene glycol alginate at the ratios of 3:7 and 4:6. The instability index and particle size of the emulsions were determined using a stability analyzer and laser particle size analyzer. The influence of crystallization on the emulsions was observed under a polarizing microscope. The effects of centrifugal force and storage on the lutein emulsions were analyzed by measuring the changes in absorbance. The results showed that the emulsion fabricated by xanthan and propylene glycol alginate at the ratio of 4:6 was highly stable, and crystals were dispersed when xanthan and propylene glycol alginate existed. These results revealed that the hydrophobicity and absorption kinetics of emulsifiers would determine the stability of emulsion when the viscosity of emulsifiers reached a certain value, and the stability of emulsions would affect the stability of lutein in the emulsions.
叶黄素是一种疏水性类胡萝卜素，具有多种生物活性。为了将该分子用一种新方法进行包封，我们采用黄原胶和藻酸丙二醇酯以 3:7 和 4:6 的比例制备了两种乳液。采用稳定性分析仪和激光粒度分析仪测定了乳液的不稳定性指数和粒径。在偏光显微镜下观察了结晶对乳液的影响。通过测量吸光度的变化，分析了离心力和储存对叶黄素乳液的影响。结果表明，黄原胶和藻酸丙二醇酯比例为 4:6 的乳液非常稳定，并且当黄原胶和藻酸丙二醇酯存在时，晶体分散。这些结果表明，当乳化剂的粘度达到一定值时，乳化剂的疏水性和吸收动力学将决定乳液的稳定性，而乳液的稳定性将影响叶黄素在乳液中的稳定性。
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