14 documents found, page 1 of 2

Carbon footprint of the School of Allied Health Technologies of Polytechnic Ins...

Higher education institutions have increased their responsibilities for the reduction of greenhouse gas emissions (GHG) in order to contribute to a more sustainable development. The School of Allied Health Technologies is a good example of an institution that has environmental concerns and has been developing initiatives and commitments for a more sustainable environmental future. The calculation of the carbon ...

Género e representação: a indumentária feminina nos jacentes portugueses dos sé...

Resumo: O objectivo deste trabalho foi desvendar que imagens projectam os jacentes femininos de Duzentos, Trezentos e Quatrocentos das mulheres que os mandaram esculpir ou foram assim representadas pelos seus maridos e filhos. Utilizámos como fonte principal a indumentária desses jacentes por reconhecermos que ela é um importante factor de construção de identidades sociais e de género. Não desdenhámos, contudo,...

Flow Diverters Devices for Treatment of Intra-cranial Aneurysms – six Months Fo...

Endoluminal reconstruction with flow diverter devices represents an innovative technique in the treatment of intracranial aneurysms. These new stents, self-expandable and of low porosity, are released through the microcatherization of the parent artery. The main goal of these systems is thereby rebuilding the vessel wall and excluding the aneurysmal formation of the arterial circulation. We show the preliminary...

Nanoemulsions of β-carotene using a high-energy emulsification-evaporation tech...

Nanoemulsions of β-carotene were prepared using a high-energy emulsification-evaporation technique based on a 23 level factorial design. Results show that it is possible to obtain dispersions at a nanoscale range. Process parameters such as time and shear rate of homogenization affected significantly particle size distribution in terms of volume-weighted mean diameter and surface-weighted mean diameter. The obt...

Rheological characterization of κ-carrageenan/galactomannan and xanthan/galacto...

The synergistic interactions of two non-conventional galactomannans (Gleditsia triacanthos galactomannan (mannose/galactose ratio [M/G] = 2.82) and Sophora japonica galactomannan (M/G = 5.75)) with κ-carrageenan and xanthan were quantified and compared with those of two traditional galactomannans (guar gum—M/G= 1.8 and locust bean gum—M/G= 3.5) with the same polysaccharides. The main objective was to evaluate t...

Characterization of galactomannans extracted from seeds of Gleditsia triacantho...

The rheological behaviour, under steady and dynamic shear and extensional conditions, of two nonconventional galactomannans isolated from Gleditsia triacanthos and Sophora japonica is determined and compared to those of locust bean gum and guar gum. The studied galactomannans exhibit shear-thinning behaviour in the range of concentrations and shear rates evaluated. For similar concentrations and shear rates, th...

Production of β-carotene nanoemulsions prepared by a high-speed blender: charac...

An efficient implementation of nanotechnology at the industrial level depends on the development of new tools for the application of strategies aimed at improving food quality and human health. Such strategies should offer the potential to significantly improve the solubility and bioavailability of many functional ingredients. The aim of the present work was to prepare -carotene stable nanoemulsions as potentia...

Nano structures for food applications

Extraction, purification and characterization of galactomannans from non-tradit...

This work presents a methodology for the extraction of galactomannans from seeds of four different species of Leguminosae (Adenanthera pavonina, Caesalpinia pulcherrima, Gleditsia triacanthos and Sophora japonica) to be used e.g. in the food and biomedical industries. The galactomannans were obtained by aqueous extraction followed by a precipitation with ethanol. This methodology is simpler and easier to perfor...

Optimization of edible coating composition to retard strawberry fruit senescence

The ability of polysaccharide-based (starch, carrageenan and chitosan) coatings to extend the shelf-life of strawberry fruit (Fragaria ananassa) were studied, mainly for industrial applications. The coatings and strawberries were characterized in terms of their physical properties (superficial properties, wettability, oxygen permeability) in order to optimize coating composition. The optimized coatings were the...