食品科学

• 基础研究 • 上一篇    下一篇

月见草油微胶囊的制备及微观结构分析

石 燕,李如一,王 辉,李 倩,李德俊,涂宗财   

  1. 1.南昌大学食品学院,食品科学与技术国家重点实验室,江西 南昌 330047;
    2.江西师范大学 功能有机小分子教育部重点实验室,江西 南昌 330022
  • 出版日期:2014-11-15 发布日期:2014-11-06

Preparation and Microstructure of Evening Primrose Oil Microcapsules

SHI Yan, LI Ru-yi, WANG Hui, LI Qian, LI De-jun, TU Zong-cai   

  1. 1. State Key Laboratory of Food Science and Technology, College of Food Science, Nanchang University, Nanchang 330047, China;
    2. Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang 330022, China
  • Online:2014-11-15 Published:2014-11-06

摘要:

采用4 种不同的配方通过喷雾干燥技术制备月见草油微胶囊,并对4 种配方制备的月见草油微胶囊的表面油含量、包埋率、粒径及表面结构进行分析。结果表明:以变性淀粉和麦芽糊精为壁材制备的月见草油微胶囊表面油含量低,包埋率好,粒径小,颗粒圆,微胶囊表面平整光滑。选用以变性淀粉和麦芽糊精为壁材制备的月见草油微胶囊进行脂肪酸组分及含量的测定,发现微胶囊化对月见草油的主要功能性成分亚油酸和γ-亚麻油酸的含量基本没有影响。用N-甲基靛红酸酐标记此配方中的麦芽糊精,通过激光共聚焦扫描显微镜进行断层扫描观察微胶囊的内部结构,发现微胶囊呈球形,单核结构,麦芽糊精在微胶囊壁中均匀分布。

关键词: 月见草油, 微胶囊, 性质, 脂肪酸, 微观结构

Abstract:

Spray drying was used to prepare evening primrose oil (EPO) microcapsules for four different formulas. The
properties of microcapsules were determined by surface oil content, encapsulation efficiency, microcapsule particle size
and surface morphology. The results indicated that EPO microcapsules prepared with wall materials consisting of starch
octenylsuccinate (OSA) and maltodextrin (MD) possessed a low surface oil content, high encapsulation efficiency, small
microcapsule particle size and smooth surface. The analysis of fatty acid composition and contents showed that the
major functional components linoleic and γ-linolenic acid had no significant change before and after microencapsulation
of EPO with OSA-MD as the wall materials. When MD as one of the wall materials of microcapsules was marked by
N-methylisatoic anhydride, the inner structure of EPO microcapsules was observed by confocal laser scanning microscopy.
The microcapsules were spheres with a single-core structure and MD was uniformly distributed in the wall.

Key words: evening primrose oil, microcapsule, properties, fatty acid, microstructure