1,720,977 research outputs found
Polychlorinated biphenyls, organochlorine pesticides, and polycyclic aromatic hydrocarbons in wild, farmed, and frozen marine seafood marketed in Campania, Italy
No full textPolychlorinated biphenyls (PCBs), organochlorine pesticides, and polycyclic aromatic hydrocarbons (PAHs) were detected
in fresh-catch, farmed, and frozen marine fish marketed in Campania, Italy. Additionally, polychlorobiphenyl congeners were
found: six were non–dioxin-like (NDL-PCB) (IUPAC no. 28, 52, 101, 138, 153, and 180), and one was dioxin-like (DL-PCB)
(IUPAC no. 118). In all, 93% of fresh-catch, 100% of aquaculture, and 74% of the frozen specimens contained PCBs at
concentrations varying from 0.12 to 35.11 ng/g, wet weight; NDL-PCBs ranged between 0.12 and 32.44 ng/g. Penta-, hexa-,
and heptachlorobiphenyls were predominant. Regarding organochlorine pesticides, hexachlorobenzene was detected in 35% of
fresh catch, 36% of farmed, and 46% of the frozen fish specimens, in a range between 0.01 and 3.29 ng/g. Contents of the
dichlorodiphenyltrichloroethane isomer amounted to 0.12 to 11.00 ng/g. Finally, PAHs were detected in 100% of the specimens.
Benzo[a]pyrene was detected in 66% of the aquaculture, 35% of the fresh catch, and 24% of the frozen species, at concentrations
varying from 0.03 to 9.18 ng/g. On the basis of annual fish consumption, an average daily intake of NDL-PCBs of
6.02 ng/kg of body weight was estimated. Calculated daily hexachlorobenzene and total dichlorodiphenyltrichloroethane intakes
were, respectively, 0.11 and 0.90 ng/kg of body weight per day. The contribution of fish to the daily consumption of the
noncarcinogenic PAHs can be considered low; for benzo[a]pyrene, the estimated daily intake is considerably lower than the
doses considered carcinogenic for experimental animals by the European Union Scientific Committee on Food
Migration of monomers and plasticizers from packed foods and heated microwave foods using QuEChERS sample preparation and gas chromatography/mass spectrometry
No full textThe objective of this study was to evaluate the migration of monomers and plastic additives in microwave heated homemade courses and in packed liquid food. Compounds studied were 3 phthalates, 4- tert-octylphenol (OP), 4-nonylphenol (NP), bisphenol A (BPA) and di(2-ethylhexyl)adipate (DEHA). A QuEChERS based method was optimized for the analysis of these compounds in solid or liquid packed and retailed food. Using gas chromatography coupled to mass spectrometry, recoveries ranged from 49 ± 16% (OP) to 130 ± 16% (BPA) and from 63 ± 22% (OP) to 127 ± 29% (NP) in solid and liquid foods, with limits of detection below 14.37 ng g-1 and 2.25 ng mL-1, respectively. NP showed the highest mean level in homemade foods (1064 ± 363 ng g-1 wet weight) and reheating did not produce an increase in the levels detected. Phthalates and DEHA were detected at low concentrations. Among liquid foods, meat broth mean concentrations of NP were of 9.61 ± 1.93 ng mL-1 and of 9.68 ± 1.75 ng mL-1 for butylbenzylphthalate in fish broth, while in wine, the most abundant compound was di-n-butylphthalate. Overall, the developed QuEChERS method permitted to determine the presence of investigated chemicals in packed food allowing the evaluation of compounds that can affect food quality
Contributo della dieta nell'esposizione di pazienti ospedalizzati a palstificanti ftalici
No full textMalattie a trasmissione alimentare: indagine sulle conoscenze e rispettivi comportamenti in studenti universitari.
No full textInfluence of roasting process in six coffee Arabica cultivars: Analysis of volatile components profiles
No full text
Determination of acrylamide levels in potato crisps and other snacks and exposure risk assessment through a Margin of Exposure approach.
No full textStudy on influence of temperature, storage time and packaging type on dibutylphthalate(DBP) and di(2-ethylhexyl)phthalate (DEHP) release in packed meals.
No full textReady-to-eat meals packed in polyethylene terephthalate (PET) and aluminium dishes, supplied to patients in two hospitals in the Campania region (Italy), were studied to evaluate the probable migration of di-n-butylphthalate (DBP) and di(2-ethylhexyl)phthalate (DEHP) from the packaging into the food. The influence of temperature, storage time and type of package on the migration process was considered, analysing the meals according to three time ranges, before the packaging (T 0) and after 60?min (T 1) and 120?min (T 2) from packaging during the storage in thermostatic delivery carts. At T 0 in the meals sampled before packaging in PET dishes, mean levels of DBP and DEHP were 0.023?+/-?0.002?mu g/g and 0.069?+/-?0.041?mu g/g, respectively; the DBP level increased 230% and that of DEHP increased 208% by time T 0 versus T 2. In the meals sampled before packaging (T 0) in aluminium dishes, the mean levels of DBP and DEHP were 0.030?+/-?0.001?mu g/g and 0.057?+/-?0.015?mu g/g, respectively. The significant increase in contaminant levels over storage times for meals packed in PET dishes demonstrates that from packages made of plastic materials the migration of phthalic acid esters into foods is possible. In meals packed in PET dishes, the highest DBP and DEHP increases were observed in the T 0 to T 1 range, which represented the time interval over which meals were kept hot, and mainly in the first ones, where the highest temperatures have been recorded
Survey of lead, cadmium, mercury and arsenic in seafood purchased in Campania, Italy
No full textLead, cadmium, mercury and arsenic were surveyed in fresh catch, farmed and frozen marine fish, cephalopods
and mussels marketed in Campania (Italy), and the population’s weekly intake from seafood was assessed.
A total of 162 specimens of fish and cephalopods and 30 pools of mussels were analyzed. Pb levels in fresh catch
species ranged between 520 and 689 ng/g; in farmed from 520 to 438 ng/g and in frozen from 520 to 541 ng/g.
Cd values ranged in fresh catch seafood from 50.8 to 19.8 ng/g; in farmed from 50.8 to 42.3 ng/g; in frozen from
50.8 to 93.1. Hg levels ranged 8–339 ng/g in wild seafood; 55–226 ng/g in farmed and 55–313 ng/g in frozen.
In fresh catch seafood, As values ranged 510–231 ng/g; in farmed from 12–310 ng/g and in frozen 12–272 ng/g.
Cd and Hg concentrations were below the EU limits in all species; two samples of farmed European seabass and
two frozen samples exceeded EU limits for Pb. The median weekly dietary intake could affect the provisional
tolerable weekly intake (PTWI) of Pb by 2% (range 0.5–16.5%), Cd PTWI by 0.9% (range 0.1–8.0%), Hg PTWI
by 9.6% (range 0.6–41.0%) and the As PTWI by 3.6% (range 0.4–12.5%). Considering the upper values in the
ranges, seafood represents a non-negligible contribution to Pb weekly intake (16.5%), but mainly to the weekly
intake of Hg (41.0%) for high seafood consumers and those consuming the most contaminated species
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