201. [Preparation of zirconia nanoparticles deposited cotton fibers and their application in the rapid enrichment of phosphopeptides].
- Author
-
Yu Q, Fang K, He X, Zheng J, and Feng Y
- Subjects
- Animals, Caseins, Humans, Milk chemistry, Serum chemistry, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, Cotton Fiber, Nanoparticles, Phosphopeptides isolation & purification, Zirconium
- Abstract
A kind of cotton-based fibrous adsorbent, zirconia nanoparticles coated cotton fiber (ZrO
2 -CF), was successfully prepared by liquid-phase deposition of zirconia nanoparticles on the surface of cotton fiber. And the ZrO2 -CF fibrous adsorbent was packed in pipet tips for the enrichment of phosphopeptide by pipetting up and down within 2 min, which was simple and fast. Nine phosphopeptides were identified from the digestion of β -casein after ZrO2 -CF extraction. ZrO2 -CF exhibited good selectivity in the enrichment of phosphopeptides from the digestion mixture of β -casein and BSA (molar ratio is 1:100) in which four phosphopeptides were identified. And it also showed excellent extraction efficiency in actual biological samples such as non-fat milk and human serum in which four and nine phosphopeptides were identified, respectively.- Published
- 2018
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