Ethylene Scavenging Films Based on Ecofriendly Plastic Materials and Nano-TiO: Preparation, Characterization, and In Vivo Evaluation.

It is known that ethylene plays an important role in the quality characteristics of fruits, especially in storage. To avoid the deterioration of fruits caused by ethylene, titanium dioxide (TiO) has been used due to its photocatalytic capacity. The aim of this study was to develop films based on two types of biopolymers, Mater-Bi (MB) and poly-lactic acid (PLA), with nanoparticles of TiO and to determine their ethylene removal capacity and its application in bananas.

Study of Ethylene-Removing Materials Based on Eco-Friendly Composites with Nano-TiO.

Ethylene is a phytohormone that is responsible of fruit and vegetable ripening. TiO has been studied as a possible solution to slowing down unwanted ripening processes, due to its photocatalytic capacity which enables it to remove ethylene. Thus, the objective of this study was to develop nanocomposites based on two types of eco-friendly materials: Mater-Bi (MB) and poly(lactic acid) (PLA) combined with nano-TiO for ethylene removal and to determine their ethylene-removal capacity.

Characterization and genomic analysis of two novel psychrotolerant strains from polar and subpolar environments.

The bioleaching process is carried out by aerobic acidophilic iron-oxidizing bacteria that are mainly mesophilic or moderately thermophilic. However, many mining sites are located in areas where the mean temperature is lower than the optimal growth temperature of these microorganisms. In this work, we report the obtaining and characterization of two psychrotolerant bioleaching bacterial strains from low-temperature sites that included an abandoned mine site in Chilean Patagonia (PG05) and an acid rock drainage in Marian Cove, King George Island in Antarctic (MC2.

Effect of Organic Modifier Types on the Physical-Mechanical Properties and Overall Migration of Post-Consumer Polypropylene/Clay Nanocomposites for Food Packaging.

The deterioration of the physical-mechanical properties and loss of the chemical safety of plastics after consumption are topics of concern for food packaging applications. Incorporating nanoclays is an alternative to improve the performance of recycled plastics. However, properties and overall migration from polymer/clay nanocomposites to food require to be evaluated case-by-case.

Modeling the release of antimicrobial agents (thymol and carvacrol) from two different encapsulation materials.

The release of microencapsulated natural antimicrobial (AM) agents (thymol and carvacrol) from two encapsulating matrixes [maltodextrin (MD) and soy protein (SP)] were evaluated for possible use in food packaging coatings. Microcapsules were prepared by oil-in-water (O/W) emulsions at different concentrations (10, 20% for MD and 2, 5% for SP). High encapsulation efficiency ranged from 96 to 99.

Chilean berry Ugni molinae Turcz. fruit and leaves extracts with interesting antioxidant, antimicrobial and tyrosinase inhibitory properties.

The knowledge of the biological properties of fruits and leaves of murta (Ugni molinae Turcz.) has been owned by native Chilean culture. The present study investigated the phenolic content, the antioxidant, antimicrobial and anti-tyrosinase activities of different murta fruit and leaves extracts to approach their uses on future food, pharmaceutical and cosmetic applications.

Supercritical impregnation of cinnamaldehyde into polylactic acid as a route to develop antibacterial food packaging materials.

Supercritical impregnation was used to incorporate a natural compound with antibacterial activity into biopolymer-based films to develop active food packaging materials. Impregnation tests were carried out under two pressure conditions (9 and 12MPa), and three depressurization rates (0.1, 1 and 10MPamin) in a high-pressure cell at a constant temperature equal to 40°C.

[Intima-media thickness in obese adolescents and their relation with metabolic syndrome].

Introduction: Obese adolescents have higher cardiovascular risk (CVR). Intima-media thickness (IMT) detects early arterial vascular compromise.

Objective: To evaluate whether obese adolescents have higher vascular compromise measured by IMT than nonobese adolescents, and if this is greater in those with metabolic syndrome (MS).

Endofacial competitive inhibition of the glucose transporter 1 activity by gossypol.

Gossypol is a natural disesquiterpene that blocks the activity of the mammalian facilitative hexose transporter GLUT1. In human HL-60 cells, which express GLUT1, Chinese hamster ovary cells overexpressing GLUT1, and human erythrocytes, gossypol inhibited hexose transport in a concentration-dependent fashion, indicating that blocking of GLUT1 activity is independent of cellular context. With the exception of red blood cells, the inhibition of cellular transport was instantaneous.

Bone mineral density in children with celiac disease. Effect of a Gluten-free diet.

Objective: To assess the degree of osteopenia in children with celiac disease (CD) at the time of diagnosis and the effect of a gluten-free diet (GFD).

Design: Longitudinal and prospective study.

Subjects: In total, 24 children (18 girls, six boys) diagnosed with CD by means of an intestinal biopsy were included in the study.

Extracellular conserved cysteine forms an intersubunit disulphide bridge in the KCNK5 (TASK-2) K+ channel without having an essential effect upon activity.

The functional channel unit of K(+) channels with two pore regions in tandem is thought to be a homodimer and it has been suggested that this dimeric structure occurs by interaction of an extracellular domain, the self-interacting domain. Interaction and functional assembly have been studied in some detail for KCNK1. It is proposed that a disulphide bond between highly conserved C69 residues of the self-interacting domain is formed which is essential for channel activity.

Greater efficacy of preweaning than postweaning environmental enrichment on maze learning in adult rats.

In order to assess the behavioural effects of environmental stimulation at different stages of development, two groups of rats were exposed to multisensory enrichment on days 10-24 (preweaning) or 25-39 (postweaning). Both groups had four 25-min sessions per day in a large cage with a variety of stimuli, in addition to 3 min of handling before each session. The mother of the preweaning group remained in the home cage during the stimulation sessions.