Exploring Blueberry Aroma Complexity by Chromatographic and Direct-Injection Spectrometric Techniques

Exploring Blueberry Aroma Complexity by Chromatographic and Direct-Injection Spectrometric Techniques

Blueberry (Vaccinium spp.) fruit consumption has increased over the last 5 years, becoming the second most important soft fruit species after strawberry. Despite the possible economic and sensory impact, the blueberry volatile organic compound (VOC) composition has been poorly investigated. Thus, the great impact of the aroma on fruit marketability stimulates the need to step forward in the und...

Mass spectrometric and chromatographic techniques for determination of polycyclic compounds.

Use of the integrated ion—current technique offers great advantages over conventional mass spectrometry. It provides a most sensitive method of analysis with limits of detection in the subpicogram region. Furthermore it can be frequently used to resolve isomeric compounds. In conjunction with other techniques it offers a great potential in the detection and estimation of air pollutants. INTRODU...

Gas-chromatographic Mass-spectrometric Detection

Cystathionine has been reported to undergo enzymatic changes leading to the formation of seven membered cyclic products (Ricci, G., Santoro, L., Achilli, M., Matarese, R. M., Nardini, M., and Cavallini, D. (1983) J. Biol. Chem. 258, 10511-10517; Cavallini, D., Costa, M., Pensa, B., and Coccia, R. (1985) Biochem. Int. 10, 641-646). Gas-chromatographic and mass-spectrometric evidence reported in...

Liquid chromatographic method for quantifying polyphenols in ciders by direct injection.

An analytical method for the quantitative determination of the principal phenolic compounds (benzoic acids, hydroxycinnamic acids, 3-phenylpropionic acids, flavanols, procyanidins, dihydrochalcones, quercetin glycosides) in ciders, which successfully employs a RP-HPLC and photodiode-array detection system without prior treatment of the sample, is described. Parameters usually examined in the me...

Alternative Sample Preparation Techniques in Gas Chromatographic - Mass Spectrometric Analysis of Urinary Androgenic Steroids