Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Giacomo Mauriello"'
Publikováno v:
Journal of Chromatographic Science. 44:18-21
The effect of storage on the composition of saffron aroma is studied. Six samples of saffron from different areas of Italy are analyzed by solid-phase microextraction-gas chromatography-mass spectrometry. Samples 1, 2, and 3 are derived from cultivat
Publikováno v:
Journal of Essential Oil Bearing Plants. 8:36-51
Three species of thyme (Thymus serpyllum, T. striatus and T. capitatus), Origanum vulgaris, Lavandula angustifolia and Acinos suaveolens were studied for their volatile components by using SPME technique. In Thymus serpyllum 69 compounds are observed
Publikováno v:
International Journal of Food Science and Technology. 39:1079-1086
Summary Solid-phase microextraction gas chromatography-mass spectrometry analysis of nineteen samples of honey from Basilicata (southern Italy) showed the presence of some flavour components never described before in honey. Furthermore, some phenyl-s
Publikováno v:
Journal of Chromatographic Science. 42:299-305
Volatile organic compounds (VOCs) of nine Tuber species and two corresponding forms are identified via solid-phase microextraction-gas chromatography-mass spectrometry analysis. Seventy-five compounds are identified. The most abundant are dimethylsul
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 134:147-154
The photochemical dimerisation of 1,3-diheteroaryl-2-propen-1-one derivatives gave a mixture of dimers in agreement with the hypothesis that the reaction is under frontier orbitals control and preferential formation of only the more stable isomers. O
Publikováno v:
European Journal of Organic Chemistry. 2000:1653-1659
Photochemical reactions of some haloheterocycles bearing electron-withdrawing groups 1a-d with electron-poor olefins 2a-c gave the addition products 3a-f and 3h-m in good yields. Other products obtained were the corresponding olefins 4a-k and the alk
The photochemical behaviour of 2-EWG-substituted heterocycles in the presence of alkenes and alkynes
Publikováno v:
Tetrahedron. 55:2013-2024
The photochemical reaction of some halogenoheterocycles substituted with electron withdrawing groups with acrylonitrile gave the addition product in high yields. The irradiation of 2-acetyl-5-phenylthiophene at 355 nm with a Nd:YAG laser in the prese
Publikováno v:
Synthetic Communications. 29:35-42
The photochemical coupling between 4,5-diiodopyrrole-2-carbaldehyde and thiophene gave 4-iodo-5-(2-thienyl)pyrrole-2-carbaldehyde. Dehalogenation reaction and the coupling of the product with undecylpyrrole gave an analogue of undecylprodigiosin, an
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :37-40
The treatment of aryl and heteroaryl thiazol-2-ylmethanols with sulfuric acid in a dimethoxyethane–water mixture at 80 °C gave the corresponding ketone as the only product in good yields. All the data are in agreement with a mechanism involving th
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 118:107-110
The lignins obtained from steam explosion of straw and beech at log R 0 3.94 and 4.45 were characterised. Elemental analysis, gel permeation chromatography, UV, 1 H and 13 C NMR spectra allow defining the characteristics of the lignins used. Pulps ob