Franco Tubaro

Franco Tubaro
University of Udine | UNIUD · Department of Agricultural Food and Environmental Sciences

Professor

About

53
Publications
7,574
Reads
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1,363
Citations
Citations since 2017
6 Research Items
578 Citations
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
Introduction
Additional affiliations
January 2011 - February 2016
University of Udine
Position
  • Professor (Associate)

Publications

Publications (53)
Article
Malondialdehyde (MDA) is a mutagenic secondary product of the peroxidation of polyunsaturated fatty acids, often used as a target for the food oxidation state, whose determination is frequently performed by its slow reaction with thiobarbituric acid (TBA), dissolved in acidified aqueous-ethanol medium, to produce a pink colored MDA-TBA adduct. In t...
Article
Full-text available
Pulsed electric field (PEF) is a non-thermal technology able to promote color and polyphenols extraction from grape skins. Most of the publications about PEF in winemaking report data concerning international varieties, poorly considering minor cultivars and the medium/long-term effects of the treatment on wine composition during storage. PEF was a...
Article
In the light of the increasing use of red wine in the diet, due to its antioxidant properties, the availability of a simple and fast method to assay the antioxidant activity of this beverage is needed. Here we measured wine antioxidant capacity (WAC) via "crocin bleaching test", wine polyphenol content (WPC), via Folin Ciocalteu method, and fluorim...
Article
A simple and sensitive device is presented based on the use of pencil-drawn paper based electrochemical detector placed at the end of a cotton thread fluidic channel in wall-jet configuration. This innovative and fast responding electroanalytical system can be adopted for both single and dual electrode electrochemical detection, this last achieved...
Article
Full-text available
A simple, reliable and low-cost fabrication method is here proposed for assembling paper-based electrochemical devices using a commercial desktop digitally controlled plotter/cutter, together with ordinary writing tools. Permanent markers (tips of 1 mm) were used to create effective hydrophobic barriers on paper, while micro-mechanical pencils (mou...
Article
Full-text available
Valve dystrophic calcification is a common disorder affecting normophosphatemic subjects. Here, cultured aortic valve interstitial cells (AVICs) were treated 3 to 28 days with phosphate (Pi) concentrations spanning the normal range in humans (0.8, 1.3, and 2.0 mM) alone or supplemented with proinflammatory stimuli to assess possible priming of dyst...
Article
A simple, sensitive and fast responding device is described for the discrimination of hydrophilic ortho-diphenols, whose presence in abundant enough amounts is typical for extra virgin olive oils (EVOOs), from hydrophilic mono-phenols instead present in almost all vegetable oils. It consists of a dual electrode detector pencil-drawn at the end of a...
Article
Herbicides, fungicides and bactericides containing heavy metals used in agriculture make it possible to find these toxic metals in beer (Čejka et al. in Ecol Chem Eng S 18:67–74, 2011). The aim of this work was to monitor the distribution of some toxic heavy metals such as cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), lead (Pb) zinc (Zn),...
Article
The aim of this study is to gather information about the possibility of including the haircoat condition as an animal-based indicator in an on-farm welfare assessment protocol foradult dairy goats. Validity was tested in two repetitions performed in Portugal and Italy,in order to increase the sample size. Two homogeneous groups of 24 adult dairy go...
Article
The aim of this experimental work was to evaluate the effect of inulin addition on dough rheological properties, texture and sensory quality of extruded snacks. Two commercial fructan products of different degree of polymerisation (DPn) were used at levels from 2% to 7% (DPn=10 for inulin GR; DPn=23 for inulin HPX). Dough rheological properties wer...
Article
Atherosclerosis is a progressive disease characterized by modified low density lipoprotein (LDL) accumulation in the large artery walls, with subsequent phagocytosis by macrophages, transforming into foam cells, and vascular smooth muscle cells (VSMCs). In particular, native LDL (nLDL) can modify joining to each other giving rise to aggregated LDL...
Article
Full-text available
The influence of light on fresh-cut vegetables during storage is controversial, since both positive and negative effects on shelf-life and quality of such products have been observed. In this work, the effect of low-intensity light treatments on lamb's lettuce, a fresh-cut leafy and ready-to-eat vegetable, was investigated during storage at low tem...
Article
Metastatic calcification of cardiac valves is a common complication in patients affected by chronic renal failure. In this study, primary bovine aortic valve interstitial cells (AVICs) were subjected to pro-calcific treatments consisting in cell stimulation with (i) elevated inorganic phosphate (Pi = 3 mM), to simulate hyperphosphatemic conditions;...
Article
Supercritical carbon dioxide (SC-CO2) was employed to extract oil from hemp (Cannabis sativa L.) seeds. For ground seeds, the supercritical extraction was carried out at temperatures of 40, 60 and 80 °C and pressures of 300 and 400 bar. Different solvent-ratios were applied. Supercritical CO2 extractions were compared with a conventional technique,...
Article
Full-text available
High performance liquid chromatography (HPLC) has been optimised for the analysis of the creatine content and possible organic contaminants in 33 samples of creatine supplements from the market. Creatinine resulted to be the major organic contaminant (44% of the samples over 100mg/kg). About 15% of the samples had dihydro-1,3,5-triazine concentrati...
Article
Some Dominican ‘heavy’ rums, of a single brand, available commercially and labelled as 8, 15, 18, 21 and 25 year-old have been evaluated and compared. Headspace solid-phase microextraction (HS-SPME) coupled to gas chromatography–mass spectrometry (GC–MS) was used to analyse volatile compounds and crocin kinetic competition test to evaluate their an...
Article
The effects of different operating conditions applied to a continuous dense-phase carbon dioxide (DPCD) system on antioxidant capacity and volatile compounds of apple juice were compared with current heat pasteurisation method. Only the microbial tests required by Italian Regulation to assure microbiological safety to ‘fruit juices and vegetables’...
Article
Lipoxygenase (LOX) and hydroperoxide lyase (HPL) activities were characterised in olive pulp microsomes from two cultivars (Ghiacciolo and Nostrana di Brisighella) from Northern Italy. LOX activity exhibited a maximum at pH 5.5 in both cultivars, and the highest value was found in cv Ghiacciolo. This was correlated with the higher total antioxidant...
Article
Full-text available
Recovery of apple trees from apple proliferation was studied by combining ultrastructural, cytochemical, and gene expression analyses to possibly reveal changes linked to recovery-associated resistance. When compared with either healthy or visibly diseased plants, recovered apple trees showed abnormal callose and phloem-protein accumulation in thei...
Article
Etiopathogenetic mechanisms in calcific aortic valve stenosis are still poorly understood despite this being the third major cause of heart disease in western world. In prior in vitro cultures simulating metastatic calcification, pro-calcific effects on aortic valve interstitial cells (AVICs) resulted by adding bacterial endotoxin lipopolysaccharid...
Article
Full-text available
A linear sweep voltammetric (LSV) approach is proposed for achieving rapid information on metal release from tinned containers into preserved vegetables. Chopped tomato and pea preserves were chosen as prototypes for acid and nearly neutral canned food, respectively. Metal release in these vegetables tinned into both bare and lacquered containers w...
Article
Full-text available
An improved single step microwave digestion procedure is described for providing the fast and easy exhaustive mineralisation of biological samples concomitantly with the quantitative conversion of any type of selenium compounds into Se(IV). In such a way, digested samples are directly suitable for the subsequent Se analysis at trace and ultratrace...
Article
The capability of a mixture of compounds to quench peroxyl radicals is measured by comparing the kinetics of a reaction between these and the carotenoid crocin and the competition that other antioxidants have for the same peroxyl radicals. This kinetic approach uses a source of peroxyl radicals to evaluate the capacity of other compounds or a mixtu...
Article
Alcoholic beverages are known to exert a protective effect on atherosclerotic disease. This study aimed to assess the in vivo and in vitro effects of alcohol on matrix metalloproteinase (MMP) -2 and -9, known to determine atherosclerosis progression. Eighteen healthy volunteers, regular drinkers (two standard alcohol servings/day, on average) at fi...
Article
Full-text available
Special waste incinerator ashes (fly and bottom) and steelmaking slag were attrition milled, separately or in blend to give powders that were pressed into specimens. Pressed samples were sintered in a muffle furnace to form monolithic ceramics that were characterized by density, shrinkage on firing, water absorption, bending strength, hardness and...
Article
Full-text available
Special waste incinerator ashes (fly and bottom) and steelmaking slag were attrition milled, separately or in blend to give powders that were pressed into specimens. Pressed samples were sintered in a muffle furnace to form monolithic ceramics that were characterized by density, shrinkage on firing, water absorption, bending strength, hardness and...
Article
Evidence is accumulating that postprandial phenomena play a role in atherogenesis. Dietary lipid hydroperoxides that escape from the gastrointestinal barrier can be incorporated into plasma lipoproteins, leading to a modified form of LDL (LDL minus). The present human study was designed to investigate the effect of selenium supplementation on the f...
Article
In this paper lipoxygenase (LOX) presence was investigated in coffee berries to determine its involvement in lipid degradative metabolism of plants grown in organic and conventional cultivations. An immunochemical analysis has evidenced a ca. 80 kDa protein, cross-reacting with an anti-LOX antibody, only in the pulp fraction of berries obtained fro...
Article
Iron sequestration inside the plant cell may be accomplished by ferritins, a class of proteins able to buffer and store this metal in a safe and soluble form. This protein has been shown in plastids and only recently in plant mitochondria. In this paper, we examined the localization of mitochondrial ferritin in different plant organs and its possib...
Article
Full-text available
Detailed characterization of the subdermal model is a significant tool for better understanding of calcification mechanisms occurring in heart valves. In previous ultrastructural investigation on six-week-implantated aortic valve leaflets, modified pre-embedding glutaraldehyde-cuprolinic-blue reactions (GA-CB) enabled sample decalcification with co...
Article
The monitoring of extractable organic halogen (EOX) and heavy metal contents in sludge coming from 10 different municipal wastewater treatment plants (MWWTP) located in Friuli Venezia Giulia (Italy) is reported. In this work, sludge samples drawn from sludge treatment units have been digested and analyzed by Inductively Coupled Plasma-Mass Spectrom...
Article
Full-text available
Municipal sewage sludge from municipal wastewater treatment plants were thermally transformed into powders which were blended with two types of steelworks slags in different proportions. Mixtures of powders, performed by attrition milling, were pressed into specimens which were submitted to thermodilatometric tests in order to evaluate their shrink...
Article
Full-text available
Drinkable water supplied by aqueducts undergoes preliminar potabilization which, in Italy, is mainly accomplished by chlorine addition. The bactericidal action involved in this process is always accompanied by chlorination and oxidation of organic species (mainly humic and fulvic acids) naturally present in treated waters, so that many disinfection...
Article
Full-text available
Municipal seawage sludge (MSS) from municipal wastewater treatments plants (WWTP) of different size were thermally transformed into powders which were pressed into specimens submitted to thermodilatometric tests in order to evaluate their shrinkage and then their softening temperatures on heating up to 1100°C. In addition the shrinkage behaviour of...
Article
Full-text available
In this paper, both biochemical and immunochemical evidence for the presence of lipoxygenase (LOX) in plant mitochondria is presented. Highly purified pea (Pisum sativum L., cv. Alaska) mitochondria show LOX activity, evaluated as conjugated diene formation, oxygen consumption, and hydroperoxide formation. Both 9- and 13-hydroperoxy-octadecadienoic...
Article
The antioxidant capacity of some calcium antagonists and one calcium agonist 1,4-dihydropyridines (DHPs) was evaluated by a competitive kinetic procedure. With the exception of Amlodipine, all the calcium antagonist DHPs display an unambiguous antioxidant capacity, while for the calcium agonist DHP (Bay K 8644) no measurable reactivity towards pero...
Article
The release of heavy metals from uncovered and nickel-covered brass pumps has been evaluated by ICP-MS analysis in both simple ultrapure water and 3% acetic acid solution (mimic of neutral and acid edible liquids, respectively), following a procedure similar to that recommended by the National Sanitation Foundation (NSF) International, Test Procedu...
Article
Full-text available
Previously, reactions with copper phthalocyanines at 0.05 M critical electrolyte concentration were found to cause demineralization in calcifying porcine aortic valves after subdermal implantation in rat, as well as simultaneous visualization of peculiar phthalocyanine-positive layers around cells and cell-derived matrix vesicles. In the present in...
Article
Full-text available
The roles played by various determinants in physiological, pathological or experimental calcification are still unclear. In this investigation, new insights were gained into structural changes occurring in porcine aortic valves undergoing mineralization in the rat subdermal model and then subjected to reactions with cationic phthalocyanines (PHTs),...
Article
The effect on the formation of both oxygenated polyatomic and doubly charged ions in inductively coupled plasma mass spectrometry (ICP-MS) has been evaluated for sample introduction with three different injection devices. An ultrasonic nebulizer (USN) equipped with an efficient membrane desolvator, in addition to a usual desolvation module incorpor...
Article
The role of polyphenols in human nutrition is discussed on the basis of their redox chemistry, which accounts for the observed antioxidant effect and in turn for their protective effect against atherosclerosis. Epidemiologic data, together with experimental pathology and cell biology, support the recommendation that optimal nutrition should contain...
Article
The two analytical approaches described here are addressed to the evaluation of health protective or challenging aspects of different diets and could contribute to determine the "Recommended Optimal Intake" for different nutritional antioxidants. A competition kinetics procedure for measuring plasma antioxidant capacity is described. This procedure...
Article
A competition kinetics procedure for measuring total antioxidant capacity in wine is described. This procedure is based on the “crocin bleaching test” (Bors et al. Biochim. Biophys. Acta 1984, 796:, 312–319) as modified for analyzing the antioxidant capacity of complex mixtures (Tubaro et al. J. Am. Oil Chem. Soc. 1996,73, 173–179...
Article
The effect of carnosine on irradiation inactivation kinetics of Aeromonas hydrophilawas studied. In phosphate buffer, carnosine had no effect on survival of the pathogen, whereas in turkey meat supplemented with carnosine the adverse effect of irradiation on A. hydrophila was reduced. Peroxy radicals were toxic to A. hydrophila, and this effect was...
Article
A competition kinetics procedure for measuring plasma antioxidant capacity is described. This procedure is based on the "crocin bleaching test" (Bors, W., et al. Biochim. Biophys. Acta 796:312-319; 1984) modified for analyzing the antioxidant capacity of complex mixtures (Tubaro, F., et al. J. Am. Oil Chem. Soc. 73:173-179; 1996). The information p...
Article
The generation of a chain-breaking antioxidant capacity has been analyzed in butter cookies, as a function of the cooking time. A kinetics approach was used, by which the antioxidant capacity of aqueous extracts of cookies was measured in terms of equivalence by weight of a reference antioxidant. A diazo compound was used to generate at constant ra...
Article
The capability of a compound or of a mixture of compounds to quench peroxyl radicals was measured by analyzing the kinetics of the competition of a parallel reaction where peroxyl radicals bleach the carotenoid crocin. This kinetic approach, originally described for the analysis of antioxidants reacting with hydroxyl radicals in water, was modified...
Article
Methyl esters of long chain fatty acids as well as esters with functional (OH) and/or bulky substituents in alpha position and in the OR moiety may be effectively reduced with an excess of sodium tetrahydroborate at moderate temperature in dioxane-water without catalysts. The reaction has been applied to the reduction of a pool of triglycerides of...

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Projects

Projects (3)
Project
Monitoring and control drinking and surface water
Archived project
Application of dietary fibres for the development of functional foods containing cereals such as pasta and extruded snacks
Project
Flavonoid translocation assays