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Updated: Jul 7, 2026

Methods for Comparing Nutrients in Beebread Made by Africanized and European Honey Bees and the Effects on Hemolymph Protein Titers
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Published on: March 17, 2015

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基板NMR与化学测量相结合:一种工作流程,揭示蜂蜜补充剂中隐藏的药物成分

Camille Pujol1, Saïda Danoun2, Ghislaine Biasini3

  • 1Laboratoire Softmat, Université de Toulouse, CNRS UMR 5623, Université Toulouse III-Paul Sabatier, 31062 Toulouse, France.

Molecules (Basel, Switzerland)
|May 11, 2024
PubMed
概括

基板核磁共振 (NMR) 与化学测量相结合,有效地选蜂蜜补充剂的tadalafil和sildenafil等 adulterants. 该方法准确地识别和量化食品补充剂中未申报的活性药物成分.

关键词:
伪造 伪造 伪造基板NMR可以使用.化学测量方法 化学测量方法紧的NMR是指一个紧的NMR.蜂蜜,蜂蜜,蜂蜜,蜂蜜,蜂蜜,蜂蜜,蜂蜜低场NMR是一种低场NMR.这种药物是西尔代纳菲尔.塔达拉菲尔 (tadalafil) 的使用情况

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相关概念视频

NMR Spectroscopy: Chemical Shift Overview01:15

NMR Spectroscopy: Chemical Shift Overview

The position of the absorption signal of a sample is reported relative to the position of the signal of tetramethylsilane (TMS), which is added as an internal reference while recording spectra. The difference between the absorption frequencies of the sample and TMS (in Hz) is divided by the spectrometer operating frequency (in MHz) to obtain a dimensionless quantity called the chemical shift. It is reported on the δ (delta) scale and expressed in parts per million.
For instance, the proton...
¹H NMR Signal Integration: Overview00:58

¹H NMR Signal Integration: Overview

The intensity of a signal, which can be represented by the area under the peak, depends on the number of protons contributing to that signal. The area under each peak is shown as a vertical line called an integral, with the integral value listed under it, as seen in the proton NMR spectrum of benzyl acetate. Each integral value is divided by the smallest integral value to obtain the ratio of the number of protons producing each signal. The ratio reveals the relative number of protons and not...
Applications Of NMR In Biology01:25

Applications Of NMR In Biology

Nuclear magnetic resonance (NMR) spectroscopy is a very valuable analytical technique for researchers. It has been used for more than 50 years as an analytical tool. F. Bloch and E. Purcell formulated NMR in 1946 and won the 1952 Nobel Prize in Physics  for their work. Biological macromolecules such as proteins, nucleic acids, lipids, and organic molecules including pharmaceutical compounds, can be studied using this versatile tool that exploits the magnetic properties of certain nuclei.
The...