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viernes, 28 de junio de 2019

Analytical Chromatography | Medical News | Medical Articles | Analytical Chromatography |

	June 28, 2019
	Analytical Chromatography
	The latest chromatography news from AZoNetwork

Analyzing Soft & Strong Drinks for Caffeine, Preservatives and Some Sweeteners

This technique is used to determine the mass concentration of caffeine and acesulfame K, as well as ascorbic acid, sorbic acid, benzoic acid, saccharin, and their respective salts in beverages. The technique applies to all kinds of alcoholic and non-alcoholic beverages, including energy and sports drinks, juices, wines, beers and beer products, vodka, brandy and spirits, and liquors.

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			Mortierella alpina Produces Interesting Compounds Other than Fatty Acids "The fungus Mortierella alpina has been used for many years in the production of polyunsaturated fatty acids for baby foods. Now, scientists have used chromatography to show that the fungus also produces a potent collection of natural surfactants, called malpinins.

			Optical Fiber Biosensors in Food Safety Both destructive and nondestructive analytical techniques are currently used to assess food products. Unfortunately, these techniques often require a considerable amount of time for both sample preparation and analysis. Optical biosensors may provide a viable alternative.

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	Capillary GC/MS: The Basics. The analyte species are first separated in the gas chromatography column after which they enter the mass spectrometer. In the mass spectrometer, the analyte is ionized, mass filtered, and then detected. The outlet of the column is connected to the ion source of the mass spectrometer.

	Sample Preparation Products for Mass Spectrometry Porvair Sciences, global specialists in the manufacture of microplates and microplate equipment, offer an extensive range of sample preparation products for mass spectrometry techniques including LC/MS and GC/MS.

	Verifying ‘organic’ Foods Researchers have shown how UHPLC and high-resolution MS can be used to verify if organic foods are truly pesticide free. The methodology could be used to help food regulators crack down on illegal practices in organic farming.

	What is 4D Proteomics? Recently, Tang and co. detailed a proteomics method combining four separate techniques for analysis of serum proteins. The aim was to overcome the difficulty of analyzing low-abundance proteins in a sample dominated by a few proteins, with LC-MS being the fourth and final step.

	Mass Spectrometry as a Tool in Forensic Science Mass spectrometry is commonly used by forensic scientists for the screening and identification of known and unknown substances. In mass spectrometry, a sample is analyzed to determine its molecular composition through the generation of a spectrum that reveals the masses of its component parts.