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Controlling the Release from Enzyme-Responsive Microcapsules with a Smart Natural Shell

机译:用智能天然壳控制从酶反应微胶囊中释放

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摘要

We design a natural and simple core-shell-structured microcapsule, which releases its cargo only when exposed to lipase. The cargo is entrapped inside a gel matrix, which is surrounded by a double-layer shell containing an inner solid lipid layer and an outer polymer layer. This outer polymer layer can be designed according to the intended biological system and is responsible for protecting the microcapsule architecture and transporting the cargo to the desired site of action. The lipid layer contains natural ester bonds, which are digested by lipase, controlling the release of cargo from the microcapsule core. To demonstrate the feasibility of this approach, our model system includes a colorant bixin entrapped inside a kappa-carrageenan gel matrix. This core is surrounded by an inner beeswax-palmitic acid layer and an outer casein-poloxamer 338 layer. These fabricated microcapsules are then applied into Cheddar cheese, where they selectively color the cheese matrix.
机译:我们设计了一种天然和简单的核心壳结构的微胶囊,只有在暴露于脂肪酶时才会释放其货物。 该货物被夹在凝胶基质内,其被含有内固脂质层和外聚合物层的双层壳包围。 该外聚合物层可以根据预期的生物系统设计,并且负责保护微胶囊架构并将货物运送到所需的作用部位。 脂质层含有天然酯键,其被脂肪酶消化消化,从微胶囊核心控制货物的释放。 为了证明这种方法的可行性,我们的模型系统包括夹在kappa-carrageenan凝胶基质内的着色剂脑蛋白。 该芯被内蜂蜡棕榈酸层和外酪蛋白 - 泊洛昔氨酸338层包围。 然后将这些制造的微胶囊施加到Cheddar奶酪中,在那里选择性地染色奶酪基质。

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