Search results for " Physicochemical"

showing 10 items of 22 documents

Effect of Harvest Date on Mango (Mangifera Indica L. Cultivar Osteen) Fruit’s Qualitative Development, Shelf Life and Consumer Acceptance

2021

The qualitative characteristics of mango fruits change throughout their development process and are also influenced by their duration. Harvesting at different times after the fruit set affects external and internal quality and the post-harvest behavior and management possibilities of the fruits. The objective of this study was to assess the evolution of the most important physicochemical and organoleptic parameters of cv. Osteen fruits concern the length of their stay on the plant and also to their post-harvest management. For this reason, fruits were harvested progressively in ten pickings. The study showed that mango fruits that are kept on the tree reach the best quality traits, correspo…

0106 biological sciencesOrganolepticConsumption point Mangifera indica Physicochemical analyses Sensory profileBiologyShelf life01 natural sciences040501 horticultureDry matterMangiferasensory profileCultivarphysicochemical analysesMango fruitconsumption pointManagement practicesSfood and beveragesAgriculture04 agricultural and veterinary sciencesInternal qualitySettore AGR/03 - Arboricoltura Generale E Coltivazioni ArboreeHorticulture<i>Mangifera indica</i>0405 other agricultural sciencesAgronomy and Crop Science010606 plant biology & botanyAgronomy
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Thermomineral waters of Greece: geochemical characterization

2020

75 °C). In terms of pH most results vary from 5.5 to 823 °C) ii) warm (23 40 °C) iii) thermal (40 75 °C) and iv) hyperthermal (&gtfew springs show either very low pH (&lt10) proposing serpentinization processes. Regarding TDS concentrations collected waters can be subdivided into low salinity (up to 1.5 g/L) brackish (up to 20 g/L) and saline (up to 43 g/L). The medium high salinities can be justified by mixing with sea water and/or strong waterrock interaction processes. Isotope composition of O and H ranges from 12.7 to +2.7 ‰ SMOW and from 91 to +12 ‰ SMOW respectively and is generally comprised between the Global Meteoric Water Line and the East Mediterranean Meteoric Water Line. Only few water samples show a positive shift for δ18O possibly related to high temperature waterrock interaction processes. Carbon dioxide (18 997000 μmol/mol) or N2 (1100 989000 μmol/mol) or CH4 (&ltMany geothermal areas of Greece are located in regions affected by Miocene or Quaternary volcanism and in continental basins characterised by elevated heat flow. Moreover the majority of them is found along the coast as well as in islands of the Aegean Sea and thus thermal water is often brackish to saline due to marine intrusion into costal aquifer. In the present study almost 300 thermal and cold mineral water samples were collected along the Hellenic territory with their physicochemical parameters (temperature pH electrical conductivity and Eh) and the amount of bicarbonates (titration with 0.1N HCl) being determined in situ. Additionally gases found either in free or dissolved phase were sampled. Both water and gas samples were analysed at the INGVPa laboratories for major ions (Ion Chromatography) silica (Inductively Coupled Plasma Optical Emission Spectrometry) chemical composition of free and dissolved gases (Gas Chromatography) water isotopes (O and H) and carbon and helium isotopes of free and dissolved gases (Mass Spectrometry). The temperature of the investigated waters ranges from 6.5 to 98°C pH from 1.96 to 11.98 whilst Total Dissolved Solids (TDS) from 0.06 to 43 g/L. Based on the temperature parameter waters can be divided into four groups: i) cold (&lt0.5 913000 μmol/mol) are the prevailing gas species found in the studied sites. The δ13CCO2 values ranged from 20.1 to +8.5 ‰ whilst the isotope ratio of He from 0.21 to 6.71 R/RA.4) suggesting interaction with H2Srich gases or very high pH values (&gtSettore GEO/08 - Geochimica E Vulcanologia
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Synergism between exposure to mercury and use of iodine supplements on thyroid hormones in pregnant women

2015

Objective: To evaluate the association between mercury exposure and thyroid-stimulating hormone (TSH), total triiodothyronine (TT3) and free thyroxine (FT4) levels during pregnancy as well as to explore if there is any synergic action between mercury and intake of iodine from different sources. Methods: The study population was 1407 pregnant women participating in the Spanish INMA birth cohort study. Total mercury concentrations were analyzed in cord blood. Thyroid hormones (THs) were measured in serum samples collected at 13.2 +/- 1.5 weeks of gestation. The association between mercury and TH levels was evaluated with multivariate linear regression models. Effect modification caused by iod…

Adultmedicine.medical_specialtyendocrine systemendocrine system diseasesEndocrine disruptionFluoroimmunoassaychemistry.chemical_elementThyrotropinIodineBiochemistryCohort StudiesPregnancyInternal medicinePrenatal exposuremedicineHumansGeneral Environmental ScienceThyroidPregnancyTriiodothyronineSpectrophotometry AtomicThyroidEnvironmental ExposureMercurymedicine.diseaseFetal BloodMercury (element)Iodine supplementationThyroxineEndocrinologymedicine.anatomical_structurechemistryAbsorption PhysicochemicalSpainDietary SupplementsGestationPopulation studyTriiodothyronineFemalehormones hormone substitutes and hormone antagonistsHormoneEnvironmental MonitoringIodine
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Nuevos datos sobre el uso de materia colorante durante el Neolítico antiguo en las comarcas centrales valencianas

2006

La caracterización mineralógica de materias colorantes procedentes de los yacimientos valencianos de la Cova de l'Or, la Cova de la Sarna y la Cova Fosca de la Vall d'Ebo demuestra el uso de dos tipos de materia colorante durante el Neolítico Antiguo: Hematites y Cinabrio. Las características y distribución geográfica de cada una de ellas nos remiten a dos estrategias distintas de obtención y. probablemente. de utilización de las mismas.

Ancient NeolithicprehistoriaAncient Neolithic; Physicochemical analyses; Haematites; Cinnabar Chaine Opératoirelcsh:Clcsh:ArchaeologyPhysicochemical analyseslcsh:CC1-960Cinnabar Chaine Opératoirelcsh:Auxiliary sciences of historyHaematitesSagvntum
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Halloysite-Based Bionanocomposites

2017

Scientific research has been invigorated by a new class of biodegradable materials as alternatives to polymers derived from fossils. Such biomaterials can also offer economic advantages because they are derived from renewable resources. Several biopolymers (gelatin, chitin, chitosan, starch, pectin, cellulose and its modified versions, etc.) have been exploited to produce films and formulations. Their use is limited because of fast degradation, predominant hydrophilic character, and, in some cases, unsatisfactory mechanical properties. However, the properties of these polymers can be improved by using inorganic fillers such as additives. Halloysite nanotube is a promising green filler for t…

BiopolymerMaterials scienceApplicationHalloysite nanotube02 engineering and technologySettore CHIM/06 - Chimica Organicaengineering.material010402 general chemistry021001 nanoscience & nanotechnology01 natural sciencesHalloysitePhysicochemical propertie0104 chemical sciencesBiopolymers halloysite nanotubes HNT-biopolymers nanocomposites physicochemical properties applicationsHNT-biopolymers nanocompositeChemical engineeringengineering0210 nano-technologySettore CHIM/02 - Chimica Fisica
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Obesity interferes with the orosensory detection of long-chain fatty acids in humans

2014

Background: The association between the orosensory detection of lipids, preference for fatty foods, and body mass index (BMI; in kg/m 2 ) is controversial in humans. Objective: We explored the oral lipid-sensing system and the orosensory-induced autonomic reflex system in lean and obese subjects. Design: Lean (BMI: 19 to ,25; n = 30) and obese (BMI .30; n = 29) age-matched men were enrolled. Their oral threshold sensitivity to linoleic acid (LA) was determined by using a 3-alternative forced-choice ascending procedure, and their eating habits were established by the analysis of 4 consecutive 24-h food-consumption diaries. The effect of brief oral lipid stimulations on plasma triglyceride [(…

Blood GlucoseMaleobesityChemical PhenomenaMESH : Insulin[ SDV.AEN ] Life Sciences [q-bio]/Food and NutritionCholesterol VLDLMedicine (miscellaneous)MESH: Food HabitsStimulationMESH: Energy IntakeMESH : TasteMESH : FastingBody Mass Indexchemistry.chemical_compoundMESH: Cholesterol VLDLMESH: Diet RecordsInsulinMESH: ObesityMESH : Physicochemical PhenomenaCompletely randomized designMESH : Food HabitsCross-Over StudiesMESH: Middle AgedMESH : Food PreferencesNutrition and DieteticsFastingMiddle AgedDiet RecordsMESH : TriglyceridesSensory ThresholdsTasteMESH : ObesityMESH: Triglyceridesmedicine.medical_specialtyMESH : MaleLinoleic acidMESH: FastingMESH: InsulinMESH: Cross-Over StudiesMESH: Body Mass IndexLinoleic AcidMESH : Diet RecordsFood PreferencesBMIMESH : Linoleic AcidInternal medicineAutonomic reflexmedicineHumansMESH : Middle AgedhumanMESH: Food PreferencesTriglyceridesMESH : Cholesterol VLDLMESH: Linoleic AcidMESH: HumansCholesterolbusiness.industryMESH : HumansMESH : Energy IntakeFeeding BehaviorMESH : Blood GlucoseMESH : Cross-Over Studiesmedicine.diseaseCrossover studyObesityMESH: Malefat taste[SDV.AEN] Life Sciences [q-bio]/Food and NutritionMESH: Physicochemical PhenomenaMESH : Body Mass IndexEndocrinologychemistryMESH: Blood GlucoseMESH: Tastefood preferenceMESH: Sensory ThresholdsEnergy Intakebusiness[SDV.AEN]Life Sciences [q-bio]/Food and NutritionBody mass indexMESH : Sensory ThresholdsThe American Journal of Clinical Nutrition
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Pulsed electric fields as an alternative to thermal processing for preservation of nutritive and physicochemical properties of beverages: A review

2017

Fruit juices and other beverages constitute an important source of bioactive compounds, but thermal processing may reduce their contents thus decreasing natural nutritive value of foods. This has been recently led to the use of non-thermal technologies, especially pulsed electric fields (PEF) as an interesting alternative to thermal pasteurization of beverages. Reported results show that PEF is a useful for pasteurization of fruit juices that can minimize changes in physicochemical and nutritional properties with retention of higher amounts of health-related phytochemicals. This study presents an overview of the effect of PEF on the physicochemical (e.g., Brix, pH, viscosity, acidity, color…

BrixbiologyChemistryGeneral Chemical Engineeringpulsed electric fields ; liquid foods ; physicochemical properties ; nutritional propertiesfood and beveragesPasteurization04 agricultural and veterinary sciencesFree aminobiology.organism_classification040401 food sciencelaw.inventionAntioxidant capacity0404 agricultural biotechnologylawFood scienceAromaFlavorFood ScienceJournal of Food Process Engineering
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When the functionalisation comes in useful: ionic liquids with a “sweet” appended moiety demonstrate drastically reduced toxicological effects

2020

The growing number of applications of ionic liquids (ILs) in industry have brought attention to the green credentials of synthesis, as well as their cytotoxicities and ecotoxicities both for their use and accidental leakage into the environment. With the abovementioned properties in mind, we designed a class of ILs with either cations bearing a gluconamide motif and aliphatic side chains or the anion incorporating a gluconic acid (derived from food waste) moiety. An IL with an imidazolium cation with an appended gluconic amide (bearing five hydroxyl groups) moiety was also synthesized for a useful comparison. Different structural features were considered, placing emphasis on the nature and …

CytotoxicityGeneral Chemical Engineeringphysicochemical properties02 engineering and technology010402 general chemistry01 natural sciencesionic liquidschemistry.chemical_compoundSDG 3 - Good Health and Well-beinggluconic acidEnvironmental ChemistryMoietyecotoxicityRenewable Energy Sustainability and the EnvironmentChemistrySettore CHIM/06 - Chimica OrganicaGeneral Chemistryionic liquids gluconic acid cytotoxicity ecotoxicity physicochemical properties021001 nanoscience & nanotechnologyCombinatorial chemistry0104 chemical sciencesCytotoxicity; ecotoxicity; gluconic acid; ionic liquids; physicochemical propertiesIonic liquidGluconic acidSurface modification/dk/atira/pure/sustainabledevelopmentgoals/good_health_and_well_beingEcotoxicity0210 nano-technology
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SENSORY AND PHYSICOCHEMICAL CHARACTERIZATION OF CERASUOLO DI VITTORIA RED WINE

2007

DOC wine sensory and physicochemical parameters
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Direct experimental observation of mesoscopic fluorous domains in fluorinated room temperature ionic liquids

2017

Fluorinated room temperature ionic liquids (FRTILs) represent a class of solvent media that are attracting great attention due to their IL-specific properties as well as features stemming from their fluorous nature. Medium-to-long fluorous tails constitute a well-defined apolar moiety in the otherwise polar environment. Similarly to the case of alkyl tails, such chains are expected to result in the formation of self-assembled fluorous domains. So far, however, no direct experimental observation has been made of the existence of such structural heterogeneities on the nm scale. We report here the first experimental evidence of the existence of mesoscopic spatial segregation of fluorinated dom…

General Physics and AstronomyNanotechnology02 engineering and technologyNeutron scattering010402 general chemistryLAYER CAPACITOR APPLICATIONS; PERFLUOROALKYL SIDE-CHAINS; ANGLE NEUTRON-SCATTERING; PARTICLE MESH EWALD; PHYSICOCHEMICAL PROPERTIES; FORCE-FIELD; CATION SYMMETRY; STRUCTURAL-CHARACTERIZATION; AMMONIUM TETRAFLUOROBORATE; MOLECULAR SIMULATION01 natural sciencesionic liquidsionic liquids SANS nanostructuration fluorous domains NMR NOEchemistry.chemical_compoundMolecular dynamicsPhysics and Astronomy (all)nanostructurationMoietyPhysical and Theoretical ChemistryAlkylNOEchemistry.chemical_classificationfluorous domainsMesoscopic physicsSANSNuclear magnetic resonance spectroscopy021001 nanoscience & nanotechnologyNMR0104 chemical sciencesfluorinated ionic liquids neutron scattering x-ray diffraction structurechemistryChemical physicsIonic liquidPolar0210 nano-technology
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