Nanostructured Montmorillonite Clay for Controlling the Lipase-Mediated Digestion of Medium Chain Triglycerides

被引：36

作者：

Dening, Tahnee J. ^{[1
]}

Joyce, Paul ^{[2
]}

Rao, Shasha ^{[1
]}

Thomas, Nicky ^{[1
]}

Prestidge, Clive A. ^{[1
]}

机构：

[1] Univ South Australia, Sch Pharm & Med Sci, City East Campus, Adelaide, SA 5001, Australia

[2] Univ South Australia, Future Ind Inst, Mawson Lakes Campus, South Australia 5095, Australia

来源：

ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 48期

基金：

澳大利亚研究理事会;

关键词：

montmorillonite; clay; lipid-based formulation; lipid digestion; lipolysis; lipase; hybrid microparticles; DRUG-DELIVERY-SYSTEMS; COMMON FORMULATION LIPIDS; IN-VIVO PERFORMANCE; COLLOIDAL STABILIZERS; POROUS NANOSTRUCTURE; VITRO; ABSORPTION; EMULSIONS; CHOLESTEROL; ALUMINOSILICATE;

D O I：

10.1021/acsami.6b13599

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Biocompatible lipid hybrid particles composed of montmorillonite and medium chain triglycerides were engineered for the first time by spray drying oil-in-water emulsions stabilized by montmorillonite platelets to form montmorillonite-lipid hybrid (MLH) microparticles containing up to 75% w/w lipid. In vitro lipolysis studies under simulated intestinal conditions indicated that the specific porous nanoarchitecture and surface chemistry of MLH particles significantly increased the rate (>10-fold) and extent of lipase-mediated digestion compared to that of coarse and homogenized submicrometer triglyceride emulsions. Proton nuclear magnetic resonance studies verified the rapid and enhanced production of fatty acids for MLH particles; these are electrostatically repelled by the negatively charged montmorillonite platelet faces and avoid the "interfacial poisoning" caused by incomplete digestion that retards lipid droplet digestion. MLH particles are a novel biomaterial and encapsulation system that optimize lipase enzyme efficiency and have excellent potential as a smart delivery system for lipophilic biomolecules owing to their exceptional physicochemical and biologically active properties. These particles can be readily fabricated with varying lipid loads and thus may be tailored to optimize the solubilization of specific bioactive molecules requiring reformulation.

引用

页码：32732 / 32742

页数：11

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