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1.
Einstein (Sao Paulo) ; 22: eRC0582, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38958338

RESUMEN

The focus of this case report is to technically describe a noninvasive diagnostic evaluation of bow Hunter's syndrome using a dynamic computed tomography angiography protocol and discuss its advantages. In addition, we aimed to exemplify the quality of the study by presenting images of a 3D-printed model generated to help plan the surgical treatment for the patient. The dynamic computed tomography angiography protocol consisted of a first image acquisition with the patient in the anatomic position of the head and neck. This was followed by a second acquisition with the head and neck rotated to the side that triggered the symptoms, with technical parameters similar to the first acquisition. The acquired images were used to print a 3D model to better depict the findings for the surgical team. The dynamic computed tomography angiography protocol developed in this study helped visualize the vertebrobasilar arterial anatomy, detect vertebral artery stenosis produced by head and neck rotation, depict the structure responsible for artery stenosis (e.g., bony structure or membranes), and study possible complications of the disease (e.g., posterior cerebral circulation infarction). Additionally, the 3D-printed model better illustrated the findings of stenosis, aiding in surgical planning. In conclusion, dynamic computed tomography angiography for the evaluation of bow Hunter's syndrome is a feasible noninvasive technique that can be used as an alternative to traditional diagnostic methods.


Asunto(s)
Angiografía por Tomografía Computarizada , Insuficiencia Vertebrobasilar , Humanos , Angiografía por Tomografía Computarizada/métodos , Insuficiencia Vertebrobasilar/diagnóstico por imagen , Insuficiencia Vertebrobasilar/cirugía , Masculino , Arteria Vertebral/diagnóstico por imagen , Imagenología Tridimensional/métodos , Impresión Tridimensional
2.
J Hepatocell Carcinoma ; 10: 1923-1933, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37933267

RESUMEN

Purpose: Fibrolamellar hepatocellular carcinoma (FLHCC) is a rare primary liver malignancy often diagnosed at advanced stages. While there are limited data on the efficacy of specific agents, we aim to report outcomes of patients treated with systemic therapies and explore prognostic factors. Patients and Methods: Medical records of patients treated between 2010 and 2022 were reviewed. Treatments were defined after multidisciplinary assessment. Descriptive statistics were used for baseline demographics. Time-to-event outcomes were estimated using the Kaplan-Meier method, compared by log-rank and adjusted by a regression model. Radiomic features (including size, shape, and texture) of the primary lesion were extracted and dimensionality reduced. An unsupervised Gaussian Mixture Model (GMM) clustering was performed, and survival was compared between clusters. Results: We identified 23 patients: 12 males, with a median age of 23.6 years. At diagnosis, 82.6% had metastases, most frequently to the lungs (39.1%), lymph nodes (39.1%), and peritoneum (21.7%). Patients received a median of three lines (1-8) of treatment, including different regimens. Sorafenib (39.1%), capecitabine (30.4%), and capecitabine/interferon (13%) were the most used first-line regimens. The median time-to-failure was 3.8 months (95% CI: 3.2-8.7). Capecitabine + interferon (42.1%) and platinum combinations (39.1%) were the most used second-line regimens, with a time-to-failure of 3.5 months (95% CI: 1.5-11.6). Median overall survival was 26.7 months (95% CI: 15.1-40.4). A high baseline neutrophil-to-lymphocyte ratio (NLR) was associated with worse survival (p=0.02). Radiomic features identified three clusters, with one cluster (n=6) having better survival (40.4 vs 22.6 months, p=0.039). Tumor sphericity in the arterial phase was the most relevant characteristic associated with a better prognosis (accuracy=0.93). Conclusion: FLHCC has unique features compared to conventional HCC, including young onset, gender balance, and absence of hepatopathy. Systemic therapies can provide encouraging survival, but lack of uniformity precludes defining a preferable regimen. Radiomics and NLR were suggested to correlate with prognosis and warrant further validation.

3.
Nat Prod Res ; : 1-6, 2023 Jul 12.
Artículo en Inglés | MEDLINE | ID: mdl-37436920

RESUMEN

This is the first study in which the impact of a new bio-packaging on histamine formation in mackerel was investigated. To monitor the preservation of fresh fish samples a treatment with innovative polymeric film and a soaking procedure in liquid new biomaterial was adopted. Ultra HPLC diode array detection (UHPLC-DAD) analyses for histamine monitoring were performed on fresh, packaged, and soaked mackerel samples at different time. The histamine content threshold value was up to 7 days, and after this period the results showed that histamine levels were affected by application of biomaterial. Significant increase was detected in sample that was not treated with biofilm. The new biofilm extended the shelf-life and reveals a promising packaging system to prevent histamine biosynthesis.

4.
Antioxidants (Basel) ; 12(2)2023 Feb 18.
Artículo en Inglés | MEDLINE | ID: mdl-36830077

RESUMEN

The black soldier fly (BSF), Hermetia illucens, has been recognized as one of the most promising insect species for its ability to valorize organic waste while producing a valuable larval biomass with a great potential as a sustainable source of nutrients, including proteins and bioactive molecules. In the present study, BSF larvae were used to produce and characterize the protein hydrolysates (BPHs) that were then evaluated for their potential biological activity in vitro. The BPHs obtained from the BSF larvae proteins by enzymatic digestion were characterized by Nuclear Magnetic Resonance (NMR) and polyacrylamide gel electrophoresis and assessed for their antioxidant activity (BPHs in the range of 0.1 to 1.5 mg/mL) in L-929 cells. Our findings show that BPHs can exert a dose-dependent cytoprotective role against H2O2-iduced oxidative stress in cells. This antioxidant activity relies on the reduction of ROS levels in challenged cells as measured by flow cytometry and fluorescence microscopy, together with the induction and nuclear translocation of Nrf2, as evaluated by qPCR and indirect immunofluorescence analysis, respectively. Overall, our findings on the remarkable biological activity of the BPHs obtained in a large-scale process strongly suggest the application of BPHs as ingredients promoting animal health in feed formulations.

5.
BJR Case Rep ; 8(4): 20220018, 2022 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-36451905

RESUMEN

Colorectal cancer represents the most common malignancy of the gastrointestinal tract and the second most frequently diagnosed malignancy in adults. The most common site of metastases is the liver and 40% of patients in stage IV have liver only disease.1 Hepatic metastases are the major determinants of morbidity and mortality in these patients, with surgery being the treatment of choice or even curative in these cases.2 Therefore, aggressive surgeries should be considered in patients with liver only disease. In this context, hepatectomy and metastasectomy have emerged as promising techniques for improving survival in patients with metastatic disease, also providing long-term cure.3 The use of liver volumetrics, tridimensional reconstructions with vessel extraction and 3D virtual surgery simulations allows better surgical planning and potentially decrease transfusions, surgery time and complications.4 For major hepatectomies (>4 resected segments), surgical planning with computed angiotomography and liver remnant volume calculation potentially increases the safety of surgery. We report a case in which preoperative 3D surgical simulation was crucial for conducting a safe major hepatectomy in a patient with multiple colorectal liver metastases.

6.
Health Care Women Int ; 43(1-3): 129-141, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-34652261

RESUMEN

The authors' purpose in the present study is to examine the role of subthreshold mental disorders as predictors of Postpartum Depression (PPD). 110 pregnancy women were evaluated as follow: the General 5-Spectrum Measure at 26 weeks of gestation; the Edinburgh Postnatal Depression Scale at 3/6 months after delivery. Only 4.5% of the sample developed PPD at 3/6 months after delivery. Agoraphobia/panic, depressed mood, social anxiety and eating problems relate positively to PPD at 3/6 months. Early identification of symptoms that could indicate the development of future mood problems in the mother is of crucial importance for mental health and prevention.


Asunto(s)
Depresión Posparto , Ansiedad/psicología , Depresión Posparto/diagnóstico , Depresión Posparto/epidemiología , Depresión Posparto/psicología , Femenino , Humanos , Madres/psicología , Periodo Posparto , Embarazo , Escalas de Valoración Psiquiátrica , Factores de Riesgo
7.
Aust N Z J Psychiatry ; 56(2): 120-136, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34169752

RESUMEN

BACKGROUND: First described in 1955, night eating syndrome refers to an abnormal eating behavior clinically defined by the presence of evening hyperphagia (>25% of daily caloric intake) and/or nocturnal awaking with food ingestion occurring ⩾ 2 times per week. AIMS: Although the syndrome is frequently comorbid with obesity, metabolic and psychiatric disorders, its etiopathogenesis, diagnosis, assessment and treatment still remain not fully understood. METHODS: This review was conducted according to PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines; PubMed database was searched until 31 October 2020, using the key terms: 'Night Eating Syndrome' AND 'complications' OR 'diagnosis' OR 'drug therapy' OR 'epidemiology' OR 'etiology' OR 'physiology' OR 'physiopathology' OR 'psychology' OR 'therapy'. RESULTS: From a total of 239 citations, 120 studies assessing night eating syndrome met the inclusion criteria to be included in the review. CONCLUSION: The inclusion of night eating syndrome into the Diagnostic and Statistical Manual of Mental Disorders-5 'Other Specified Feeding or Eating Disorders' category should drive the attention of clinician and researchers toward this syndrome that is still defined by evolving diagnostic criteria. The correct identification and assessment of NES could facilitate the detection and the diagnosis of this disorder, whose bio-psycho-social roots support its multifactorial nature. The significant rates of comorbid illnesses associated with NES and the overlapping symptoms with other eating disorders require a focused clinical attention. Treatment options for night eating syndrome include both pharmacological (selective serotonin reuptake inhibitors, topiramate and melatonergic drugs) and non-pharmachological approaches; the combination of such strategies within a multidisciplinary approach should be addressed in future, well-sized and long-term studies.


Asunto(s)
Trastornos de Alimentación y de la Ingestión de Alimentos , Síndrome de Alimentación Nocturna , Manual Diagnóstico y Estadístico de los Trastornos Mentales , Conducta Alimentaria/psicología , Trastornos de Alimentación y de la Ingestión de Alimentos/diagnóstico , Trastornos de Alimentación y de la Ingestión de Alimentos/epidemiología , Humanos , Hiperfagia/diagnóstico , Hiperfagia/epidemiología , Hiperfagia/psicología , Síndrome de Alimentación Nocturna/epidemiología , Síndrome de Alimentación Nocturna/psicología , Obesidad/psicología
8.
Molecules ; 26(15)2021 Jul 30.
Artículo en Inglés | MEDLINE | ID: mdl-34361798

RESUMEN

A fast HPLC method with fluorescence detector (FD) was developed for the determination of three tocopherols (TOCs) in milk samples from Modicana cattle breed. The ultrasound-assisted procedure was optimized for the extraction of TOCs prior to HPLC/FD analysis, reducing sample preparation time and allowing a fast quantification of α-tocopherol, δ-tocopherol and γ tocopherol. The optimized ultrasonic extraction combines an efficient and simple saponification at room temperature and a rapid HPLC quantification of TOCs in milk. The precision of the full analytical procedure was satisfactory and the recoveries at three spiked levels were between 95.3% and 87.8%. The linear correlations were evaluated (R2 > 0.99) and the relative standard deviation (RSD) values for intra-day and inter-day tests at three spiked levels were below 1% for the retention time and below 5.20% for the area at low level spiking. The proposed procedure, reducing the experimental complexity, allowed accurate extraction and detection of three TOCs in milk samples from Modicana cattle breed.


Asunto(s)
Cromatografía Líquida de Alta Presión/normas , Extracción Líquido-Líquido/métodos , Leche/química , Tocoferoles/aislamiento & purificación , alfa-Tocoferol/aislamiento & purificación , gamma-Tocoferol/aislamiento & purificación , Animales , Bovinos , Límite de Detección , Variaciones Dependientes del Observador , Reproducibilidad de los Resultados , Saponinas/química , Sonicación , Factores de Tiempo
9.
Antioxidants (Basel) ; 9(10)2020 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-33019631

RESUMEN

Marine species represent a great source of biologically active substances; Actinia equina (AE), an Anthozoa Cnidaria belonging to the Actinidiae family, have been proposed as original food and have already been included in several cooking recipes in local Mediterranean shores, and endowed with excellent nutraceutical potential. The aim of this study was to investigate some unexplored features of AE, through analytical screening and an in-vitro and in-vivo model. An in-vitro study, made on RAW 264.7 stimulated with H2O2, showed that the pre-treatment with AE exerted an antioxidant action, reducing lipid peroxidation and up-regulating antioxidant enzymes. On the other hand, the in-vivo study over murine model demonstrated that the administration of AE extracts is able to reduce the carrageenan (CAR)-induced paw edema. Furthermore, the histological damage due to the neutrophil infiltration is prevented, and this highlights precious anti-inflammatory features of the interesting food-stuff. Moreover, it was assessed that AE extract modulated nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kB) and The nuclear factor erythroid 2-related factor 2 (Nrf-2) pathways. In conclusion, our data demonstrated that thanks to the antioxidant and anti-inflammatory properties, AE extract could be used as a new food supplement for inflammatory pathology prevention.

10.
Artículo en Inglés | MEDLINE | ID: mdl-32397269

RESUMEN

Fish is a nutrient-rich food but, at the same time, consumption of fish is a possible source of exposure to heavy metals. Since many coastal Mediterranean areas suffer from great anthropomorphic pressure, the aim of this study was to assess the level of potentially toxic inorganic elements in different fish samples from the coastal zone of Southern Italy (Gela) where there is a high mortality rate linked to cancer disease and congenital malformations. The presence of mercury, cadmium, lead, nickel, arsenic, vanadium, and chromium was measured by inductively coupled plasma-mass spectrometry (ICP-MS). The risk assessment was evaluated in terms of estimated daily intake by calculating the amount of potentially toxic elements that an average individual adult weighing 60 kg would ingest. Moreover the non-carcinogenic risk was estimated by target hazard quotient (THQ). The study evidenced significant contamination by inorganic elements, especially cadmium, which can be linked to industrial pollution. The THQ indexes, as indicators of human health, suggest that the consumption of fish from the study area is not free of risk.


Asunto(s)
Arsénico , Exposición Dietética/análisis , Contaminación de Alimentos/análisis , Metales Pesados , Alimentos Marinos/análisis , Animales , Arsénico/análisis , Ecosistema , Peces , Humanos , Italia , Metales Pesados/análisis , Medición de Riesgo
11.
Foods ; 9(4)2020 Mar 26.
Artículo en Inglés | MEDLINE | ID: mdl-32224949

RESUMEN

(1) Background: Extra-virgin olive oil (EVOO) is a precious and universally studied food matrix. Recently, the quantitative chemical composition was investigated by an innovative processing method for the nuclear magnetic resonance (NMR) experiments called Multi-Assignment Recovered Analysis (MARA)-NMR. (2) Methods: Any EVOO 13-carbon NMR (13C-NMR) profile displayed inconsistent signals. This mismatch was resolved by comparing NMR data to the official gas-chromatographic flame ionization detection (GC-FID) experiments: the analyses concerned many EVOOs but also the "exotic" Capparis spinosa oil (CSO). (3) Results: NMR and GC-FID evidenced the overwhelming presence of cis-vaccenic esters in the CSO and, more importantly, cis-vaccenic 13C-NMR resonances unequivocally matched the misunderstood 13C-NMR signals of EVOOs. The updated assignment revealed the unexpected relevant presence of cis-vaccenic ester (around 3%) in EVOOs; it was neglected, so far, because routine and official GC-FID profiles did not resolve oleic and cis-vaccenic signals leading to the total quantification of both monounsaturated fatty esters. (4) Conclusions: The rebuilt MARA-NMR and GC-FID interpretations consistently show a meaningful presence of cis-vaccenic esters in EVOOs, whose content could be a discrimination factor featuring specific cultivar or geographical origin. The study paves the way toward new quantification panels and scientific research concerning vegetable oils.

12.
Nat Prod Res ; 34(1): 172-176, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31014105

RESUMEN

This study investigates the inorganic elements and the persistent organic pollutants (POPs) accumulated in liver of a sexually mature Hexanchus griseus living in the Mediterranean Sea. The casual finding of a specimen in the Strait of Messina (April 2018) allowed us to carefully analyse its liver which can be considered a very important biological indicator. The determination of inorganic elements was carried out by ICP-MS technique. Quantitative determination of polycyclic aromatic hydrocarbons (PAH) and poly-chloro-biphenyl compounds (PCB), distinguished in dioxine-like (DL) and not-dioxine-like (NDL) derivates, has been carried out by HRGC/MS and HRGC-MS/MS respectively. Worrying levels of PCB-DL (TEQ = Σ(PCB-DL)*TEF = 5.96 ng g-1), PCB-NDL (Σ(PCB-NDL) = 1390.4 ng g-1) together with the presence of pesticides and plasticizers were found in the shark liver oil. The levels of heavy metals were below the legal limits.


Asunto(s)
Metales Pesados/análisis , Plastificantes/análisis , Bifenilos Policlorados/análisis , Hidrocarburos Policíclicos Aromáticos/análisis , Tiburones/metabolismo , Animales , Contaminantes Ambientales/análisis , Hígado/química , Hígado/metabolismo , Espectrometría de Masas , Mar Mediterráneo , Plaguicidas/análisis , Espectrometría de Masas en Tándem
13.
Psychiatry Res ; 279: 323-330, 2019 09.
Artículo en Inglés | MEDLINE | ID: mdl-31164249

RESUMEN

The inclusion of the Disruptive Mood Dysregulation Disorder (DMDD) in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), under the category of depressive disorders, provides a diagnosis for those children and adolescents with severe persistent irritability and temper outbursts, once misdiagnosed as Bipolar Disorders. The main and constantly present features of DMDD are chronic, non-episodic and persistent irritability, and temper tantrums disproportionate with the trigger. DMDD is characterized by high rates of comorbidity with other psychiatric disorders. Its main clinical manifestations overlap with Oppositional Defiant Disorder, Conduct Disorder, and Attention-Deficit/Hyperactivity Disorder. For this diagnostic overlap and the increasing use of pharmacological treatments in children and adolescents, the inclusion of DMDD diagnosis has been subjected to many criticisms. Since it is a new diagnostic entity, literature on DMDD prevalence, epidemiology, risk factors, and treatment guidelines, is still sparse and unclear. The aim of this review is to collect and analyze the literature on DMDD diagnostic criteria and main hallmarks, with particular attention to comorbidities and treatment options.


Asunto(s)
Manual Diagnóstico y Estadístico de los Trastornos Mentales , Trastornos del Humor/diagnóstico , Trastornos del Humor/psicología , Trastorno por Déficit de Atención con Hiperactividad/diagnóstico , Trastorno por Déficit de Atención con Hiperactividad/epidemiología , Trastorno por Déficit de Atención con Hiperactividad/psicología , Déficit de la Atención y Trastornos de Conducta Disruptiva/diagnóstico , Déficit de la Atención y Trastornos de Conducta Disruptiva/epidemiología , Déficit de la Atención y Trastornos de Conducta Disruptiva/psicología , Trastorno Bipolar/diagnóstico , Trastorno Bipolar/epidemiología , Trastorno Bipolar/psicología , Comorbilidad , Trastorno de la Conducta/diagnóstico , Trastorno de la Conducta/epidemiología , Trastorno de la Conducta/psicología , Trastorno Depresivo/diagnóstico , Trastorno Depresivo/epidemiología , Trastorno Depresivo/psicología , Diagnóstico Diferencial , Errores Diagnósticos/prevención & control , Errores Diagnósticos/psicología , Humanos , Genio Irritable/fisiología , Trastornos del Humor/epidemiología , Prevalencia , Factores de Riesgo
14.
Nat Prod Res ; 33(19): 2815-2822, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-30445871

RESUMEN

Origanum vulgare L. samples, marketed in different geographic locations, were characterized by their organic and inorganic chemical composition. A total of 35 commercial samples were collected from various sites and analyzed to determine the qualitative and quantitative profile of essential oils, phenolic compounds and some inorganic elements. The variation in the content and composition of the essential oil was assessed by GC and GC-MS analyses, the phenolic fraction was investigated by UPLC®/PDA, and the inorganic elements were determined by ICP-MS. The Principal Component Analysis (PCA) was applied with the aim to sort out the Origanum vulgare L. samples with different composition according to the different belonging origins. The results showed appreciable qualitative and quantitative differences among samples from different geographic origin.


Asunto(s)
Aceites Volátiles/análisis , Aceites Volátiles/química , Origanum/química , Cromatografía Liquida/métodos , Cromatografía Liquida/estadística & datos numéricos , Análisis de los Alimentos/métodos , Análisis de los Alimentos/estadística & datos numéricos , Cromatografía de Gases y Espectrometría de Masas , Minerales/análisis , Análisis Multivariante , Fenoles/análisis , Análisis de Componente Principal
15.
Ecotoxicol Environ Saf ; 148: 114-124, 2018 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-29035753

RESUMEN

This study focused on the inorganic environmental contaminants in specific food products which form part of the food chain of the population residing in the area of Southern Italy (Gela) where there is a high mortality rate linked to tumor diseases and congenital malformations. Determination of toxic metals was performed by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). The toxicological data for every toxic element has been applied to evaluate the risk for the consumer by calculating the amount of potentially toxic element that would ingest an average of 60kg weight individual adult. The analysis of the investigated samples shows a high level of metal contamination which can be linked both to the polluted water and air. The obtained results give us an idea about the agricultural products contamination and possible exposure of local people through the food chain.


Asunto(s)
Monitoreo del Ambiente/métodos , Contaminantes Ambientales , Contaminación de Alimentos/análisis , Metales Pesados , Verduras/química , Riego Agrícola , Contaminantes Ambientales/análisis , Contaminantes Ambientales/toxicidad , Italia , Metales Pesados/análisis , Metales Pesados/toxicidad , Medición de Riesgo
16.
Nat Prod Res ; 31(20): 2397-2404, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-28412859

RESUMEN

Considering the crucial role of carotenoids exploitable both as nutraceuticals and also as dyes in food industry, there are many efforts in seeking for new sources of these pigments, especially in the marine world. In this study, for the first time, we extracted carotenoids from sea sponges Raspaciona aculeata and Dictyonella marsilii taken from Ganzirri Lake Messina (Italy). The determination and quantification of carotenoids was made by UPLC-PDA-MS. Remarkable results concern renieratene content in R. aculeate found to be over 2570 ppm.


Asunto(s)
Carotenoides/química , Poríferos/química , Animales , Carotenoides/aislamiento & purificación , Italia , Lagos
17.
Food Chem ; 221: 1631-1636, 2017 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-27979139

RESUMEN

A fast reversed-phase UPLC method was developed for squalene determination in Sicilian pistachio samples that entry in the European register of the products with P.D.O. In the present study the SPE procedure was optimized for the squalene extraction prior to the UPLC/PDA analysis. The precision of the full analytical procedure was satisfactory and the mean recoveries were 92.8±0.3% and 96.6±0.1% for 25 and 50mgL-1 level of addition, respectively. Selected chromatographic conditions allowed a very fast squalene determination; in fact it was well separated in ∼0.54min with good resolution. Squalene was detected in all the pistachio samples analyzed and the levels ranged from 55.45-226.34mgkg-1. Comparing our results with those of other studies it emerges that squalene contents in P.D.O. Sicilian pistachio samples, generally, were higher than those measured for other samples of different geographic origins.


Asunto(s)
Nueces/química , Pistacia/química , Aceites de Plantas/química , Escualeno/análisis , Análisis de los Alimentos , Límite de Detección , Extractos Vegetales/química , Reproducibilidad de los Resultados , Sicilia
18.
Nat Prod Res ; 31(7): 822-828, 2017 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-27871189

RESUMEN

This study is aimed to monitor by 1H NMR spectroscopy the effect of a 12-month storage period on the 1,2-diglycerides over 1,3-diglycerides ratio for five mono-cultivar 'extra virgin olive oils' (EVOO) (Arbequina, Arbosana, Cerasuola, Nocellara and FS17) and one blend of two different cultivars (Nocellara + Biancolilla) preserved in the dark and at room temperature. These quantifications, at 500 MHz, are readily extracted through a specific and original integration difference method. Albeit it was known that the isomerisation rate is affected by the free acidity, we here demonstrate that it also depends on the presence of specific macromolecules (lipases), indeed, different EVOO cultivars with similar free acidity, show different isomerisation rate. Our results are consistent with similar diglyceride monitoring performed on Greek and Spanish EVOOs by 31P NMR.


Asunto(s)
Diglicéridos/análisis , Olea/química , Aceite de Oliva/análisis , Almacenamiento de Alimentos , Isomerismo , Espectroscopía de Resonancia Magnética , Espectroscopía de Protones por Resonancia Magnética
19.
Data Brief ; 7: 129-34, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-26933670

RESUMEN

This data set is composed to assess the accumulation of persistent organic pollutants (POPs) such as polychlorinated biphenyls (PCBs) dioxin like (DL) and not dioxin like (NDL), organochlorine pesticides (POCs) and polycyclic aromatic hydrocarbons (PAHs) in Thunnus thynnus and to elucidate the suitability of this species as a bioindicator for monitoring contaminations of these compounds in the marine ecosystems of the Straits of Messina. This investigation was conducted on liver samples of 14 T. thynnus collected during April 2015. Quantitative determination of PCBs (DL and NDL), POCs and PAHs in the examined samples has been carried out by HRGC-MS/MS. Among the PCBs, high prevalence of DL was found while, generally, the values detected for PCBs-NDL were lower than the legal limits. Tuna samples analyzed for PAHs residues revealed that all the samples were contaminated with acenaphthalene, fluorene, phenanthrene and anthracene. Moreover, generally the residual levels of DDT and DDT metabolites were low. The total content of PCB-DL, in almost all the samples, showed higher concentration than the legal limit.

20.
Nat Prod Res ; 30(9): 1009-16, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26469871

RESUMEN

Ethanol production by fermentation is strongly dependent on media composition. Specific nutrients, such as trace elements, vitamins and nitrogen will affect the physiological state and, consequently, the fermentation performance of the micro-organism employed. The purpose of this study has been to assess the highest ethanol production by a minimal medium, instead of the more complex nutrients supplementation used during alcoholic fermentation. All fermentation tests were carried out using a microwell plate reader to monitor the processes. Two Saccharomyces cerevisiae strains (NCYC 2826 and NCYC 3445) were tested using three nitrogen sources, supplied with different vitamin and salts. The results show that solutions made of urea phosphate, KCl, MgSO4·7H2O, Ca-panthothenate, biotin allowed an ethanol yield of 22.9 and 23.4 g/L for strain NCYC 2826 and NCYC 3445, respectively, representing 90 and 92% of the theoretical yield. All tests were carried out using glucose as common reference carbon source.


Asunto(s)
Medios de Cultivo , Etanol/metabolismo , Fermentación , Saccharomyces cerevisiae/metabolismo , Sulfato de Amonio/metabolismo , Glucosa/metabolismo , Nitrógeno/metabolismo , Sales (Química)/análisis , Sales (Química)/metabolismo , Urea/metabolismo , Vitaminas/análisis , Vitaminas/metabolismo
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