Search

Your search keyword '"Franchi, G. G."' showing total 94 results
Start Over Author "Franchi, G. G."
94 results on '"Franchi, G. G."'

25. PHENOLIC COMPOUNDS, CAROTENOIDS AND ANTIOXIDANT ACTIVITY IN FIVE TOMATO (LYCOPERSICON ESCULENTUM MILL.) CULTIVARS.

Author

ZANFINI, A., FRANCHI, G. G., MASSARELLI, P., CORBINI, G., and DREASSI, E.

Subjects
*PHENOLS, *CAROTENOIDS, *ANTIOXIDANTS, *HYDROPHILIC compounds, *TOMATOES, *QUANTITATIVE research
Abstract

In this study we examined the antioxidants content (polyphenols and carotenoids) and the total hydrophilic (HAA) and lipophilic (LAA) antioxidant activity of red (cv. Shiren and Red Pear), yellow (cv. Yellow Pear-shaped), pale yellow (cv. Snowball) and black (cv. Black Trifele) ripe tomato fruits. For each studied cultivars, the HAA was higher than the LAA. The correlation between antioxidants (polyphenols and carotenoids) and TEAC values (HAA and LAA) was also estimated and the only significative correlation was obtained between rutin and TEAC-HAA. Statistical analysis shows significative differences in antioxidants content (especially for lycopene and β-carotene) between the analyzed tomato cultivars. [ABSTRACT FROM AUTHOR]

Published
2017

35. Application of NIR Reflectance Spectroscopy to the Identification of Drugs Derived from Plants

Author

Corti, P., Dreassi, E., Franchi, G. G., Corbini, G., Moggi, A., and Gravina, S.

Abstract

NIR reflectance spectroscopy was applied to the identification of plant drugs. It was possible to satisfactorily distinguish ginseng, Silybwn marianum and grape seeds, directly analysing the product in its finished form. It was possible to identify Silybum samples grown in different areas. Ginseng samples containing starch were identified and old and young roots were distinguishable. Semiquantitative assay of ginsenoside content was possible.

Published
1990
Full Text
View/download PDF

48. [Production of oxygen radicals and the UV spectrum of furanocoumarins].

Author

Bovalini L, Martelli P, Cinci G, Simoni S, Franchi GG, and Anselmi C

Subjects
Ficusin metabolism, Free Radicals, Khellin analogs & derivatives, Khellin metabolism, PUVA Therapy, Riboflavin metabolism, Spectrophotometry, Ultraviolet, Furocoumarins metabolism, Superoxides metabolism
Published
1986

49. Localization of the active principles of the male fern (Dryopteris filix-mas (L.) Schott.) by fluorescence microscopy.

Author

Franchi GG and Ferri S

Subjects
Microscopy, Fluorescence, Plants, Medicinal anatomy & histology, Butyrophenones analysis, Plants, Medicinal analysis
Abstract

The active principles of the male fern, Dryopteris filix-mas (L.) Schott., consisting of a mixture of phloroglucinol derivatives called "crude filicin", are localized by means of fluorescence microscopy under U.V. 365 nm and monochromatic blue 435-490 nm lights. Crude filicin is autofluorescent, and therefore may be easily localized in the internal glandular hairs of the intercellular spaces of rhizome and leaf bases parenchyma, without pre-treatment of sections. Localization is confirmed both morphologically and chemically, and is possible on a fresh material, as well as on a desiccated one. The test allows also a complete anatomical examination of sections, and may be useful, for its easiness and quickness, in further taxonomic or pharmacognostic studies.

Published
1988
Full Text
View/download PDF

50. Occurrence of cyclic AMP and related enzymes during germination of Pinus pinea seeds.

Author

Martelli P, Lusini P, Bovalini L, Bartali R, Franchi GG, and Cinci G

Subjects
Chromatography, High Pressure Liquid, Seeds growth & development, Trees, 3',5'-Cyclic-AMP Phosphodiesterases metabolism, Adenylyl Cyclases metabolism, Cyclic AMP metabolism, Seeds enzymology
Abstract

The occurrence of cAMP, adenylate cyclase and cAMP phosphodiesterase has been tested in Pinus pinea seed during germination. The study has been carried out on dormant and imbibed seeds, seedlings, endospermic residues, roots and cotyledons. cAMP has been detected by the protein binding method and its occurrence has been verified by HPLC detections. cAMP phosphodiesterase shows a very high activity at acidic pH, while being completely inactive at pH 7.4. At this pH value, well detectable levels of adenylate cyclase have been observed. Therefore, the classical pathway of synthesis and breakdown of cAMP, already accepted for animal and bacterial cells, seems to be operating in Pinus pinea plant too.

Published
1987

Catalog

Books, media, physical & digital resources
See catalog results