Targeting excessive free radicals with peels and juices of citrus fruits: grapefruit, lemon, lime and orange

A comparative study between the antioxidant properties of peel (flavedo and albedo) and juice of some commercially grown citrus fruit (Rutaceae), grapefruit (Citrus paradisi), lemon (Citrus limon), lime (Citrus aurantiifolia) and sweet orange (Citrus sinensis) was performed. Different in vitro assays were applied to the volatile and polar fractions of peels and to crude and polar fraction of juices: 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity, reducing power and inhibition of lipid peroxidation using b-carotene–linoleate model system in liposomes and thiobarbituric acid reactive substances (TBARS) assay in brain homogenates. Reducing sugars and phenolics were the main antioxidant compounds found in all the extracts. Peels polar fractions revealed the highest contents in phenolics, flavonoids, ascorbic acid, carotenoids and reducing sugars, which certainly contribute to the highest antioxidant potential found in these fractions. Peels volatile fractions were clearly separated using discriminant analysis, which is in agreement with their lowest antioxidant potential

Alguns aspectos fundamentais da defesa fitossanitária dos produtos armazenados em Moçambique. I. Inventário faunístico

info:eu-repo/semantics/publishedVersio

Efeito do método de preparação e do tempo de armazenamento na actividade antioxidante de ervas aromáticas

As infusões e decocções de ervas aromáticas estão entre as bebidas mais consumidas a nível mundial. Apesar de a água não ser um bom solvente para alguns dos compostos presentes nas plantas, as preparações aquosas contêm elevadas quantidades de compostos bioactivos nomeadamente antioxidantes, que se reflectem nas propriedades medicinais atribuídas a muitas dessas preparações [1]. Neste trabalho, foram preparadas infusões e decocções aquosas de folhas e partes aéreas de limonete (Aloysia citrodora Palau), funcho (Foeniculum vulgare Mill.), poejo (Mentha pulegium L.) e hortelã-pimenta (Mentha spicata L.) após diferentes períodos de armazenamento (0, 30, 60 e 120 dias). Os efeitos do método de preparação e do período de armazenamento nas propriedades antioxidantes das amostras foram analisados

Coulomb-nuclear interference in the breakup of 11^{11}Be

Within a theory of breakup reactions formulated in the framework of the post form distorted wave Born approximation, we calculate contributions of the pure Coulomb and the pure nuclear breakup as well as those of their interference terms to a variety of cross sections in breakup reactions of the one-neutron halo nucleus $^{11}$Be on a number of target nuclei. In contrast to the assumption often made, the Coulomb-nuclear interference terms are found to be non-negligible in case of exclusive cross sections of the fragments emitted in this reaction on medium mass and heavy target nuclei. The consideration of the nuclear breakup leads to a better description of such data.Comment: 9 pages, latex, 2 figures, to be published in Phys. Rev. C (Rapid Communication

Allometric growth patterns in hatchery-reared larvae of the catfish Lophiosilurus alexandri (Pisces: Pseudopimelodidae)

The aim of the present study was to characterize the relationships that occur between morphometric variables of larvae of Lophiosilurus alexandri Steindachner, 1876 through their allometric growth analysis. Total length, head length and body height were correlated with standard length, head height and body height, as well as eye diameter and head height with head length. The results revealed allometric positive relation during the initial development, where the b coefficient varied between 1.10 and 2.81. The variable pre-anal distance in relation to the standard length and the snout length in relation to the head length revealed an allometric negative relation, where the b coefficient was 0.85 and 0.94, respectively

Tecnologia vitícola para optimização do potencial qualitativo. Manutenção do solo e gestão da folhagem

Programa AGRO Medida 8 - Desenvolvimento Tecnológico e Demonstração Acção 8.1 - Desenvolvimento Experimental e Demonstração (DE&D)Os trabalhos do projecto consistiram fundamentalmente na instalação de várias parcelas de demonstração no âmbito da Tecnologia Vitícola, em duas regiões vitivinícolas, onde se compararam diversas técnicas culturais e se acompanhou a resposta da videira através da colheita de dados ecofisiológicos e agronómicos. Em simultâneo, as parcelas experimentais foram utilizadas para as diversas acções de formação e demonstração previstas no projecto de que se destaca um Curso Aplicado de Tecnologia Vitícola para Vinhos de Qualidade e 34 visitas de grupos de viticultores e/ou técnicosN/

GWAS in Breast Cancer

Breast cancer is the most diagnosed cancer in women, and the second cause of cancer-related deaths among women worldwide. It is expected that more than 240,000 new cases and 40,450 deaths related to the disease will occur in 2016. It is well known that inherited genetic variants are drivers for breast cancer development. There are many mechanisms through which germline genetic variation affects prognosis, such as BRCA1 and BRCA2 genes, which account for approximately 20% of the increased hereditary risks. Therefore, it is evident that the genetic pathways that underlie cancer development are complex in which networks of multiple alleles confer disease susceptibility and risks. Global analyses through genome-wide association studies (GWAS) have revealed several loci across the genome are associated with the breast cancer. This chapter compiles all breast GWAS released since 2007, year of the first article published in this area, and discuss the future directions of this field. Currently, hundreds of genetic markers are linked to breast cancer, and understanding the underlying mechanisms of these variants might lead to the discover of biomarkers and targets for therapy in patients

Gravitational field around a time-like current-carrying screwed cosmic string in scalar-tensor theories

In this paper we obtain the space-time generated by a time-like current-carrying superconducting screwed cosmic string(TCSCS). This gravitational field is obtained in a modified scalar-tensor theory in the sense that torsion is taken into account. We show that this solution is comptible with a torsion field generated by the scalar field $\phi$. The analysis of gravitational effects of a TCSCS shows up that the torsion effects that appear in the physical frame of Jordan-Fierz can be described in a geometric form given by contorsion term plus a symmetric part which contains the scalar gradient. As an important application of this solution, we consider the linear perturbation method developed by Zel'dovich, investigate the accretion of cold dark matter due to the formation of wakes when a TCSCS moves with speed $v$ and discuss the role played by torsion. Our results are compared with those obtained for cosmic strings in the framework of scalar-tensor theories without taking torsion into account.Comment: 21 pages, no figures, Revised Version, presented at the "XXIV- Encontro Nacional de Fisica de Particulas e Campos ", Caxambu, MG, Brazil, to appear in Phys. Rev.