A5091337867- Analytical Chemistry and Chromatography
- Phytochemicals and Antioxidant Activities
- Electrochemical Analysis and Applications
- Analytical Chemistry and Sensors
- Phytochemistry and Biological Activities
- Essential Oils and Antimicrobial Activity
- Protein purification and stability
- Seed and Plant Biochemistry
- Phytoestrogen effects and research
- Natural product bioactivities and synthesis
- Food composition and properties
- Edible Oils Quality and Analysis
- Fermentation and Sensory Analysis
- Plant responses to elevated CO2
- Plant Physiology and Cultivation Studies
- Analytical chemistry methods development
- Electrochemical sensors and biosensors
- Flavonoids in Medical Research
- Saffron Plant Research Studies
- Postharvest Quality and Shelf Life Management
- Microbial Metabolites in Food Biotechnology
- Mass Spectrometry Techniques and Applications
- Horticultural and Viticultural Research
- Plant biochemistry and biosynthesis
- Soybean genetics and cultivation
University of Florence
2006-2018
The antiradical activity of dry beans was evaluated in order to assess the validity this test and correlate results with those achieved Folin−Ciocalteu method a rapid spectrophotometric for analysis total flavonoids. Four landraces (12 samples) common (Phaseolus vulgaris L.), collected two regions Italy (Tuscany Basilicata) three different years, were analyzed. EC50 values ranged from 39 2810 mg sample/mg 1,1-diphenyl-2-picrylhydrazil radical. phenolic content each sample expressed as gallic...
Ten genotypes belonging to Lactuca sativa, Cicorium intybus, Plantago coronopus, Eruca and Diplotaxis tenuifolia used in fresh mixed salads were investigated for their polyphenol contents. Flavonoids hydroxycinnamic acids characterized by high-performance liquid chromatography (HPLC)/diode array detection/mass spectrometry. Quercetin, kaempferol, luteolin, apigenin, crysoeriol derivatives identified; all caffeoyl derivatives. The total content was obtained through the Folin−Ciocalteu test...
Flavonoids and hydroxycinnamic derivatives of turnip tops (Brassica rapa L. subsp. sylvestris L.) were characterized for the first time in four samples from different origins. Turnip exhibit a high polyphenols content (ranging 107 to 191 mg/100 g, fresh weight) good antiradical activity, determined with DPPH* test. After liquid-liquid extraction fractionation procedures, most flavonoids (isorhamnetin, kaempferol, quercetin glycosides) identified by means HPLC-DAD/MS techniques. Isorhamnetin...
Roots, cotyledons, leaves, stems, pods, and seeds of three soy cultivars were analyzed for their content isoflavones, flavonols, coumarins, phenolic acid derivatives with samplings during a three-month period. The extracts by HPLC/DAD HPLC/MS, allowing us to confirm the presence daidzein genistein as major isoflavones characterize most flavonols derivatives. Seeds exhibited highest isoflavones: 12.61 g/kg dry weight (DW) in cv. Emiliana; 8.97 DW Elvir; 4.49 Kure, roots are only part ranging...
Abstract BACKGROUND: Lactuca sativa L. ssp. acephala L., cv. Batavia red Mohican plants were cultivated under intensive conventional, organic and biodynamic farming analyzed for their polyphenol content antiradical activity in order to demonstrate the influence of on yield, activity. RESULTS: The yield from conventional was highest (2.89 kg m −2 ), while content, measured by spectrophotometry, these lower at P < 0.05 (1.36 mg g −1 ) than (1.74 1.85 , respectively). activity, DPPH · assay,...
The flavonoid composition of three phenotypes "Zolfino" landraces, a typical bean grown in Tuscany, has been elucidated by means HPLC-DAD and HPLC-MS analysis. Flavonols, isoflavones, anthocyanins have separated determined the different samples chosen on basis their seed coat color. A flavonol that not previously found Phaseolus vulgaris L. seeds characterized. quantitative data show presence flavonols (ranging from 709 to 118 mg/kg fresh weight), isoflavones 14 2 anthocyanins, black beans...
Antiradical activity and total polyphenol flavonoid contents of modern old varieties durum (9 varieties) soft (17 wheat grains, sampled over two years (summer 2007 2008) in the same site, were determined order to point out differences among between varieties. Nine compounds identified by means HPLC/MS, their amount was determined. No correlation found antiradical or contents. The temperature conditions 30 days before harvesting principal factor which differentiated quantitative profile...
Abstract BACKGROUND Volatile compounds of Cellina di Nardò and Ogliarola Barese, two typical Italian olive varieties, have been characterised at different ripening stages. Proton transfer reaction–time‐of‐flight–mass spectrometry ( PTR‐TOF‐MS ) was used for the first time on these fruits with aim characterising volatile profile and, in case Ogliarola, changes which may occur during maturation process. RESULTS does not involve any sample pre‐treatment, allows high‐resolution measurements,...
Abstract As part of screening aimed at the selection novel antimycotic compounds vegetable origin, leaf extracts Camellia sinensis L., Cupressus sempervirens L. and Pistacia lentiscus seed extract Glycine soja Sieb. et Zucc. were tested against yeast yeast‐like species implicated in human mycoses. Of only those C. (obtained from a commercial preparation green tea) exhibited broad activity towards Candida glabrata , Clavispora lusitatiae Cryptococcus laurentii Filobasidiella neoformans...
The stigma, stamens and sepals of Crocus sativus L,. from two different geographical origins, were analyzed for their crocin flavonol contents. Identification crocins, safranal, picrocrocin, flavonols was carried out by HPLC/DAD HPLC/MS analysis. Both stigma samples, grown under natural conditions, exhibited high contents (between 342 231 mg/g), while the rich in 6 10 mg/g). contain mainly kaempferol- 3-O-sophoroside, whereas quercetin methyl-quercetin glycosides. These data may be useful...