Construction of octenyl succinic anhydride modified porous starch for improving bioaccessibility of β-carotene in emulsions.
Construction of octenyl succinic anhydride modified porous starch for improving bioaccessibility of β-carotene in emulsions.
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通过引入辛烯基琥珀酸酐（OSA）部分成功合成了改性多孔淀粉（PS），并首次应用于β-胡萝卜素乳液中。多孔淀粉内部的孔隙和通道为OSA改性淀粉提供了更多的可能性。 13C固态NMR和傅里叶变换红外光谱(FT-IR)证实了具有不同取代度(DS)的OSA改性PS的酯键。 OSA改性PS的疏水性辛烯基琥珀酸和亲水性羟基表现出良好的乳化能力，可用于制备β-胡萝卜素乳液。随着OSA变性淀粉DS的增加，β-胡萝卜素的生物可及性也随之增强。这项研究不仅为利用多孔淀粉改性淀粉开辟了一条新途径，而且为获得基于乳液的生物活性成分输送系统提供了一种有吸引力的替代方案。 OSA改性多孔淀粉的合成及应用
Modified porous starch (PS), by introducing octenyl succinic anhydride (OSA) moieties, was synthesized successfully, which was applied as an emulsion of β-carotene for the first time. The pores and channels within porous starch provided more possibilities for OSA to modify starch. The ester linkage of OSA modified PS with different degrees of substitution (DS) were confirmed by both 13C solid-state NMR and Fourier transform-infrared spectroscopy (FT-IR). The hydrophobic octenyl succinic and hydrophilic hydroxyl groups of OSA modified PS showed the good emulsifying capability, which could be utilized to prepare β-carotene emulsions. And the bioaccessibility of β-carotene was also enhanced with increasing DS of OSA modified starch. This study not only paves a new way using porous starches for modification of starch, but also offers an attractive alternative for obtaining emulsion-based delivery systems for bioactive components. The synthesis and application of OSA modified porous starch.
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