Adsorption behavior of natural anthocyanin dye on mesoporous silica
Adsorption behavior of natural anthocyanin dye on mesoporous silica
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DOI：
10.1016/j.jpcs.2013.08.007
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发表时间：
2014
影响因子：
4
通讯作者：
Y. Kohno;Eriko Haga;K. Yoda;M. Shibata;C. Fukuhara;Y. Tomita;Y. Maeda;Kenkichiro Kobayashi
中科院分区：
文献类型：
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作者：
Y. Kohno;Eriko Haga;K. Yoda;M. Shibata;C. Fukuhara;Y. Tomita;Y. Maeda;Kenkichiro Kobayashi
由于其无毒，天然存在的花青素是潜在的适合作为食品和化妆品的着色剂。为了使花青素得到更广泛的应用，需要将花青素固定在无机寄主上，以便于处理和提高稳定性。本文主要研究了大量天然花青素染料在介孔二氧化硅上的吸附，以及络合作用对花青素稳定性的增强。花青素被成功吸附在含有少量铝的HMS型介孔二氧化硅上。通过修饰-丙基孔壁，使二氧化硅表面疏水，增加了吸附的花青素量。通过与含铝的HMS样品制备复合材料，提高了吸附的花青素的耐光性，但改善的程度不是很大。有人提出，为了进一步提高稳定性，需要将花青素分子掺入中孔深处。
Because of its non-toxicity, naturally occurring anthocyanin is potentially suitable as a colorant for foods and cosmetics. To the wider use of the anthocyanin, the immobilization on the inorganic host for an easy handling as well as the improvement of the stability is required. This study is focused on the adsorption of significant amount of the natural anthocyanin dye onto mesoporous silica, and on the stability enhancement of the anthocyanin by the complexation. The anthocyanin has successfully been adsorbed on the HMS type mesoporous silica containing small amount of aluminum. The amount of the adsorbed anthocyanin has been increased by modifying the pore wall withn-propyl group to make the silica surface hydrophobic. The light fastness of the adsorbed anthocyanin has been improved by making the composite with the HMS samples containing aluminum, although the degree of the improvement is not so large. It has been proposed that incorporation of the anthocyanin molecule deep inside the mesopore is required for the further enhancement of the stability.