During the control of a multistep organic synthesis on a soluble polymer (PEG) by matrix-assisted laser desorption/ionization (MALDI) mass spectrometry, a chemical reactivity was encountered when the matrix was acidic, for the samples where the amino moiety of the anchored compounds was protected as
Matrix-assisted Laser Desorption/Ionization Mass Spectrometry in Milk Science
β Scribed by Silvia Catinella; Pietro Traldi; Costante Pinelli; Evaristo Dallaturca; Renzo Marsilio
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 798 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0951-4198
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β¦ Synopsis
The protein content of several cow milks was investigated by matrix-assisted laser desorptionhonization (MALDI) mass spectrometry. In particular, milk from four dinerent breeds of cow (Holstein Frisons, Brown Swiss, Jersey and Reggiana) at the same lactation stage and under the same feeding system were analysed and clear differences were found in their MALDI spectra. The various lactation stages were also investigated. A series of analyses were devoted to industrial milk treatment, by studying possible thermal damage occurring during milk pasteurization and sterilization.
π SIMILAR VOLUMES
Neutral and acidic oligosaccharides from human milk were analyzed by matrix-assisted laser desorption/ionization mass spectrometry (MALDI/MS). These experiments require suitable matrices; their selection and particularly their preparation protocols must be optimized. Important criteria are sensitivi
## Abstract The development is described of a rapid, simply and accurate analytical method aimed at evaluating both the presence of cow milk in either raw ewe and water buffalo milk samples employed in industrial processes and the addition of powdered milk to samples of fresh raw milk, using matrix
Table 1. Physical, chemical and nutritional properties and mean composition of human milk (values refer to 100 mL of milk)
Matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) has successfully been used to differentiate pseudo-enantiomeric (isotopically labelled) amino acids by using cyclodextrin as complexing host. By using different pseudo-enantiomeric mixtures (i.e. R Dn S; and R S Dn ), it has be