Download e-book for iPad: Advanced Mass Spectrometry for Food Safety and Quality by Yolanda Picó

By Yolanda Picó

Advanced Mass Spectrometry for meals security and caliber provides details on contemporary developments made in mass spectrometry-based strategies and their functions in nutrition safeguard and caliber, additionally masking the most important demanding situations linked to imposing those applied sciences for more advantageous identity of unknown compounds, nutrition profiling, or candidate biomarker discovery.

Recent advances in mass spectrometry applied sciences have exposed super possibilities for various food-related purposes. in spite of the fact that, the detailed features of nutrition, similar to the wide variety of the various parts and their severe complexity current huge, immense demanding situations. this article brings jointly the newest facts at the subject, delivering an incredible source in the direction of better nutrients defense and quality.

  • Presents severe purposes for a sustainable, cheap and secure meals provide
  • Covers rising difficulties in foodstuff security and caliber with many particular examples.
  • Encompasses the features, benefits, and boundaries of mass spectrometry, and the present innovations in technique improvement and validation
  • Provides the latest information at the vital subject of nutrition defense and quality

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Additional resources for Advanced Mass Spectrometry for Food Safety and Quality

Sample text

Matrix compounds and analytes are separated in the first dimension on a hydrophilic interaction LC column [114]. In a second step, this new approach was compared with the classical methods. Sample extracts, obtained by three different methods, were injected directly into the LC × LC-MS/MS system. In total 44 targeted compounds could be identified and confirmed using this methodology [115]. With thousands of organic compounds present in complex food matrices, the development of new analytical solutions leaned toward simplified ­extraction/ clean-up procedures and chromatography coupled with MS.

If not, possible solution is the use of chemical derivatization where the polar groups of the target molecules are converted into less polar moieties, which favorably affects the vapor pressure and the adsorption characteristics. The drawback of derivatization reactions is that they are time-consuming, and intensive and tedious labor. Table 5 summarizes the most important applications of this technique within food safety and quality [7, 41, 106, 129–157]. The great analytical strength of GC lies in its high resolution.

The sensitivity of MS analyses can be greatly increased when a second round of fractionation is applied to the mixture of peptides using nano-flow LC before introduction to the MS. De novo sequencing of peptides using MS/MS provides an invaluable tool for identifying proteins on the basis of amino acid sequence homology searches from available databases. Currently, only five ray-finned fish species have complete (or nearly complete) genome sequences deposited in databases, including zebrafish, fugu, medaka, tetradon, and three-spined stickleback, which can be used for identification of proteins from proteomic approaches.

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