期刊
EUROPEAN JOURNAL OF ORAL SCIENCES
卷 112, 期 6, 页码 510-515出版社
WILEY
DOI: 10.1111/j.1600-0722.2004.00166.x
关键词
adsorption; ellipsometry; hydroxyapatite; polyphenols; salivary proteins
The adsorption of components from black tea and of purified tea polyphenols onto a whole unstimulated salivary pellicle-like protein layer, formed in vitro on hydroxyapatite discs, was studied by in situ ellipsometry. It was found that components from black tea and the purified polyphenols epicatechin-3-gallate (ECG), epigallocatechin-3-gallate (EGCG) and theaflavin readily adsorbed onto the pellicle. Further investigations showed that under the experimental conditions of this study, no black tea- or purified polyphenol-modified pellicles were eluted by either phosphate buffer or sodium dodecyl sulphate rinses. Therefore, black tea and its polyphenol components are indicated to have a profound effect on in vitro pellicle modification. Similar effects were observed for tannic acid.
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