Search results for "Aliment"

COOK AND CHILL: RISULTATI DI UN'INDAGINE CONDOTTA PRESSO L'U.O. DI ORTOPEDIA DELL'AZIENDA OSPEDALIERO-UNIVERSITARIA POLICLINICO

2008

INDAGINE SULLA QUALITA' DEL SERVIZIO RISTORATIVO E.R.S.U. (ENTE REGIONALE PER IL DIRITTO ALLO STUDIO UNIVERSITARIO) DELL'UNIVERSITA' DI PALERMO: L'OP…

2009

Modulation of folic acid bioaccessibility by encapsulation in pH-responsive gated mesoporous silica particles

2015

[EN] A study on the controlled release of folic acid (FA) from pH-responsive gated mesoporous silica particles (MSP) is reported. The MCM-41 support was synthesized using tetraethyl orthosilicate (TEOS) as hydrolytic inorganic precursor and the surfactant hexadecyltrimethylammonium bromide (CTAB) as porogen species. Calcination of the mesostructured phase resulted in the starting solid. This solid was loaded with FA to obtain the initial support S0. Moreover, this FA-loaded material was further functionalized with 3-[2-(2-aminoethylamino)ethylamino]propyltrimethoxysilane (N3) in order to obtain the gated polyamine-functionalised material S1. Solids S0 and S1 were characterized using standar…

Protective effect of mesoporous silica particles on encapsulated folates.

2016

Mesoporous silica particles (MSPs) are considered suitable supports to design gated materials for the encapsulation of bioactive molecules. Folates are essential micronutrients which are sensitive to external agents that provoke nutritional deficiencies. Folates encapsulation in MSPs to prevent degradation and to allow their controlled delivery is a promising strategy. Nevertheless, no information exists about the protective effect of MSPs encapsulation to prevent their degradation. In this work, 5-formyltetrahydrofolate (FO) and folic acid (FA) were entrapped in MSPs functionalized with polyamines, which acted as pH-dependent molecular gates. The stability of free and entrapped vitamins af…

Enzyme-Responsive Intracellular Controlled Release Using Nanometric Silica Mesoporous Supports Capped with "Saccharides"

2010

The synthesis of new capped silica mesoporous nanoparticles for on-command delivery applications is described. The gate-like functional hybrid systems consisted of nanoscopic MCM-41-based materials functionalized on the pore outlets with different “saccharide” derivatives and a dye contained in the mesopores. A series of hydrolyzed starch products as saccharides were selected. The mesoporous silica nanoparticles S1, S2, and S3 containing the grafted starch derivatives Glucidex 47, Gludicex 39, and Glucidex 29 were synthesized. Additionally, for comparative purposes solid S4 containing lactose was prepared. Delivery studies in pure water in the presence of pancreatin or -D-galactosidase were…

Stability of different mesoporous silica particles during an in vitro digestion

2016

Mesoporous silica materials have the ability to entrap drugs, nutrients and functional biomolecules and can be able to act as smart delivery systems capable to control and target the release of their cargo in a particular part of the gastrointestinal tract when administrated orally. However, the aptness of these encapsulation supports in in vivo oral controlled release relies on their chemical stability through the digestive tube. In this context, we have evaluated the stability of four different mesoporous silica particles, frequently used as encapsulating supports, during an in vitro digestion process comprising buccal, stomach and intestinal phases. Results showed that after 4 h of diges…

Off–on BODIPY-based chemosensors for selective detection of Al3+ and Cr3+versus Fe3+ in aqueous media

2014

[EN] Two new off-on BODIPY-based chemosensors that are highly sensitive for trivalent cations in aqueous solutions are described. Compound 2 exhibits selective sensing of Al3+ and Cr3+ versus Fe3+ through two different channels (UV-vis and fluorescence).

IL SISTEMA DI ALLERTA RAPIDO COMUNITARIO (RASFF): ATTIVITÀ DEL SERVIZIO DI IGIENE DEGLI ALIMENTI E DELLA NUTRIZIONE (SIAN) DELL’ ASP DI PALERMO DAL 2…

2014

Tratamiento de la imagen corporal en los trastornos de la conducta alimentaria desde la terapia online

2019

La insatisfacción corporal es uno de los factores predisponentes de los trastornos de conducta alimentaria (TCA) y las distorsiones perceptivas del tamaño corporal es un criterio diagnóstico de estos. Actualmente, se han desarrollado intervenciones online para reducir los factores de riesgo de los TCA. El objetivo de este trabajo es llevar a cabo una revisión de la literatura científica sobre el tratamiento de la imagen corporal en los TCA desde la terapia online y poner de manifiesto los avances generados. Se realizó una búsqueda en las bases de datos PsycNET, Scopus y Web of Science. La búsqueda se centró en revisar los programas de intervención para TCA con TIC en el tratamiento de la im…

"Having a drink in a bar...!" : contextual effects on drink experience : promises of the immersive approach for studying contextual influences on foo…

2013

The overall aim of the present thesis is to study contextual influences on food behaviour (including variables coming from the environment and from the consumer). To this purpose, an immersive method using a space with physical elements was used, in order to evoke a realistic situation within a laboratory setting. Here, the method consisted in designing an immersive bar evoking the situation of “having a drink in a bar”. Two variants of the bar were created and five studies were implemented in these spaces to study how context influences food choices and evaluation. Our approach consisted in taking the product as central in the link between the consumer and the environment and not as a cont…