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Aline Schneider Teixeira

Aline Schneider Teixeira
YPF y CIDCA-Conicet · YPF Tecnologia

PhD

About

35
Publications
7,014
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523
Citations
Additional affiliations
July 2007 - July 2008
University of Minho
Position
  • Student

Publications

Publications (35)
Article
Ex situ conservation of plant biodiversity has been increasingly used to prevent further loss of genetic resources. Seed banks, for example, shelter the passport data of germplasm, preserved in detail, and made available for easy access, actions included in the FAO's Second Global Plan. We examined the deterioration of tomato seeds of different var...
Article
Betacyanins are betalain derivatives showing a red-violet color suitable as a natural food colorant. An aqueous extract rich in betacyanin pigments and phenolic compounds from Alternanthera brasiliana was characterized using a high-performance liquid chromatography system with diode array and electrospray mass spectrometry detection. The major beta...
Article
Yerba mate (Ilex paraguariensis) is an infusion traditionally drunk in many countries of South America. Along its industrial manufacture, a fine yerba mate powder represents a considerable proportion of the total production, consisting of an industrial by-product not safe for human consumption, rich in minerals, that could be useful as organic comp...
Article
Full-text available
Yerba mate waste based urea fertilizer capsules were obtained and characterized. Yerba mate powder (YMP) content in these encapsulation systems ranged from 52 to 82% for the different formulations. The aim of the study was to evaluate the effect of yerba mate powder:calcium alginate ratio and the assay temperature on capsule degradation and urea re...
Poster
Full-text available
Las variedades de tomate de polinización abierta, son recursos genéticos, que en los últimos años, han ido ganando importancia para los mercados locales (ferias de venta directa del productor al consumidor, bolsones). En la actualidad, este tipo de semillas, son un insumo de importancia para la Agricultura Familiar del Cordón Hortícola de la ciudad...
Article
The effect of high hydrostatic pressure (HHP) treatment on maize starch granules was analyzed taking into account different operating conditions (time, temperature, high pressures and starch to water ratio) and the effect of hydrocolloids (λ-carrageenan, guar and xanthan gum). Morphological analysis using different microscopic techniques, mainly SE...
Article
Betacyanins and phenolic compounds from acetonitrile:acidified water extracts of Alternanthera brasiliana and Alternanthera tenella were characterized and quantified using a high-performance liquid chromatography system coupled with diode array and electrospray mass spectrometry detection. Four betacyanins (amaranthine, isoamaranthine, betanin and...
Chapter
This chapter describes corn starch as a carrier for bioactive compounds and the modifications in its structure by the high hydrostatic pressure (HHP) technique. The ability of HHP-treated corn starch to bind and carry zinc and magnesium salts and natural antioxidants of yerba mate (Ilex paraguariensis) extracts is presented as a case study in the c...
Article
Modification of corn starch granules to transform them into carriers for molecules of nutritional interest was assayed by alkaline and high pressure treatments. Changes in the granular structure of starches were revealed by porosimetry and swelling power studies, while confocal microscopy evaluated the mode of disruption of the granules. Both alkal...
Experiment Findings
Full-text available
RESUMEN La Avena sativa, un alimento que además de brindar los requerimientos básicos en la dieta provee beneficios adicionales hacia la salud, previniendo enfermedades crónico degenerativas como: obesidad, diabetes, cardiovasculares y cáncer. El objetivo de este trabajo fue determinar el perfil de polifenoles del extracto etanólico de avena median...
Poster
Full-text available
Los antioxidantes son importantes en la prevención de diversas enfermedades humanas. Los compuestos con actividad antioxidante pueden funcionar como captadores de radicales libres, formadores de complejos de metales pro-oxidantes, agentes reductores, y desactivadores de la formación de oxígeno singlete, protegiendo así al cuerpo de enfermedades deg...
Article
In the present work, the recycling of yerba mate (Ilex paraguariensis) industrial byproducts into urea-containing capsules is described as an environmentally friendly strategy for nitrogen release into the soil. Yerba mate is an infusion traditionally drunk in various countries of South America. An extensive physical characterization of the capsule...
Article
Full-text available
Cryopreservation of mint shoot tips grown in vitro (Mentha x piperita) was performed after encapsulation in alginate beads. Encapsulated shoot tips were first precultured in sucrose enriched medium (0.75 M) and then dried under a sterile air flow (0-6 h). After cooling in liquid nitrogen and warming in a warm water bath, alginate beads were transfe...
Article
Cryopreservation protocols include the use of additives and pre-treatments aimed to reduce the probability of ice nucleation at all temperatures, mainly through micro-viscosity increase. Still, there is a risk of ice formation in the temperature region comprised between the equilibrium freezing (Tf ) and the glass transition (TG ) temperatures. Con...
Article
Corn starch's ability to bind and carry a yerba mate extract with strong antioxidant properties was explored in this paper. The starch was treated by high hydrostatic pressure to increase its loading capacity and scanning electron microscopy revealed that the high pressure treatment altered the shape of starch granules and changed their surface app...
Article
Full-text available
Calcium alginate gel beads readily interchange solutes with the bulk solution and water with the surrounding media. The transfer properties are often critical for its use, either for its stability and preservation or textural modulation, or for the convenient treatment of contained tissues for cryopreservation. Chitosan has been evaluated for vario...
Article
Full-text available
Yerba mate (Ilex paraguariensis) is an indigenous crop which is highly consumed as an infusion in the South American subtropical forest. It has a high concentration of antioxidant substances, providing health benefits and helping to prevent diseases. The objectives of this work were to characterize an aqueous yerba mate extract by spectrophotometri...
Article
Vitrification refers to the physical process by which a liquid supercools to very low temperatures and finally solidifies into a metastable glass, without undergoing crystallization at a practical cooling rate. Thus, vitrification is an effective freeze-avoidance mechanism and living tissue cryopreservation is, in most cases, relying on it. As a gl...
Article
Glass, the state of matter where molecular mobility is so reduced that most physicochemical processes are virtually detained (including ice formation), is basic for cryopreservation. The glass transition temperature (Tg), a temperature range at which supercoooled liquid becomes glass, is characterized by a change in heat capacity (Cp), evaluated at...
Article
Longevity of orthodox (desiccation tolerant) seeds, pollen and fern spores characteristically increases with decreasing storage temperature. We have discovered numerous seed and fern spore species that age faster when stored in the freezer near −20 °C compared to storage at higher or lower temperatures. Seeds exhibiting this temperature anomaly are...
Article
Polycyclic aromatic compounds, such as phenanthrene (PHE), tend to accumulate in the soil compartment, where they may be retained for many years because of their persistency and hydrophobicity. The toxicity and bioaccumulation of these chemicals in soil biota and potential biomagnification along the food chain is an issue of concern. The main goal...
Article
a b s t r a c t Illegal discharges are of great concern among industry activities, since they occur under uncontrolled conditions. In most cases, effluents are acidic and the concentrations of heavy metals are very high. With this in mind, the main goal of this study was to evaluate the sorption on a soil of two of the most toxic heavy metals, Cr(V...
Article
Adsorption of hexavalent chromium [Cr(VI)] onto a loamy sand soil was studied using batch and steady flow tests with contaminant solutions at pH 2, 5 and 7. In all the cases the adsorption of Cr(VI) decreased with increasing pH. The hexavalent chromium speciation and its presence as different oxyanions, according to the solution pH, were the main v...
Article
In this study we evaluated the capacity of a defined microbial consortium (five bacteria: Mycobacterium fortuitum, Bacillus cereus, Microbacterium sp., Gordonia polyisoprenivorans, Microbacteriaceae bacterium, Naphthalene-utilizing bacterium; and a fungus identified as Fusarium oxysporum) isolated from a PAHs contaminated landfarm site to degrade a...
Article
Full-text available
The environmental contamination by organic and inorganic chemicals has been, for a long time, one of the most common problems in soils and sediments. Many organic chemicals, such as polycyclic aromatic hydrocarbons (HPAs) can persistent in soil environment for a long time (Sabljic, 2001). Due to the possibility of ring fusion at different positions...
Article
Full-text available
Soil is a key element in human survival and can be described by various definitions according to its main utility. Nowadays, it is accepted that soil is a very complex heterogeneous medium which consists of solid phases containing minerals and organic matter and soil solution, defined as the fluid phase where soil reactions, transport and adsorptio...

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