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- Title
<sup>17</sup>O NMR and Raman Spectroscopies of Green Tea Infusion with Nanomaterial to Investigate Their Properties.
- Authors
CHANGYAN ZHOU; HUIPING ZHANG; YING YAN; XINYA ZHANG
- Abstract
17O NMR and Raman spectrograms of green tea infusions with nanomaterial were investigated. Different green tea infusions were prepared by steeping tea powder with different concentrations of nanomaterial aqueous solution. The tea infusions were tested with 17O NMR and Raman spectroscopies. The 17O NMR results showed that line width increased to 90 in the tea infusions after nanomaterial was added as a result of the effects of the self-association of Ca2+ and tea polyphenol. The results of Raman spectroscopy showed that, in tea infusions, the enhancement of C─C and C─O stretching vibrations suggest an increase in the number of effective components in water.
- Subjects
NANOSTRUCTURED materials analysis; GREEN tea; POLYPHENOL oxidase; RAMAN spectroscopy; THERMODYNAMIC control
- Publication
Journal of AOAC International, 2016, Vol 99, Issue 5, p1377
- ISSN
1060-3271
- Publication type
Article
- DOI
10.5740/jaoacint.16-0128