Composição centesimal, física e sensorial de carne de búfalos terminados em sistema tradicional e silvipastoril na Amazônia Oriental.

The aim of this study was to evaluate the physical and sensory characteristics of buffalo meat ended Traditional Systems and Silvopastoral. The experiments were performed in the Research Units Animal "Senator Álvaro Adolpho", SSP installed and "Dr. Philibert Camargo "(ST), belonging to Embrapa Amazônia Oriental, Belém-Pará. After this period the animals were slaughtered at a commercial packing plant and their carcasses were identified and cooled for 24 hours. The right side carcass was cut between the 12th and 13th ribs and removed the Longissimus dorsi (kebabs), for analysis of pH, texture and color lenses, weight loss by cooking, ability to retain water, determining the composition proximate and sensory evaluation. The experimental design was completely randomized, the data submitted to analysis of variance and means were compared by 't' test at 5%. There were no differences (p> 0.05) in chemical composition and physical analysis between meat derived from animals of the two systems. Among the evaluated sensory only the "aroma" differed statistically. It is still early to suggest the use of either system, just based on the quality of meat produced, should be considered also the environmental, social and economic

Isolation of a novel Carica papaya alfa-amylase inhibitor with deleterious activity toward Callosobruchus maculatus.

Made available in DSpace on 2018-06-06T01:04:32Z (GMT). No. of bitstreams: 1 ID287071.pdf: 245650 bytes, checksum: 3316fbe729186babcd87d8eba2fcd464 (MD5) Previous issue date: 2008-01-18bitstream/item/178146/1/ID-28707-1.pd

Identification of an alpha-amylase inhibitor from Pterodon pubescens with ability to inhibit Cowpea weevil digestive enzymes.

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Effect of pruning strategy on 'Syrah' bud necrosis and fruitfulness in Brazilian subtropical Southeast

The change of wine grape harvest from wet season (summer) to dry season (winter) by changing the pruning management has improved quality of wines produced in the Brazilian Southeast. However, the vines need to be spur pruned twice a year, i.e. with a 1st pruning in August (winter pruning) for a vegetative cycle during the hot and wet summer, and a 2nd pruning in January (summer pruning) for a productive cycle during the cold and dry season. This double pruning strategy is made necessary by the fact that latent buds developed during the dry season cycle are not fruitful to support a productive cycle in the following year. This histological study, performed in the South of Minas Gerais State (Brazil), showed that annual single pruning done in the wet season (in January) displayed a high rate of necrosis on primary and secondary buds (bud necrosis – BN). In April, 99 days after summer pruning (DASP), the rates of BN were 40 % and 50 % at basal and apical node positions, respectively, reaching 80 % of BN in December (322 DASP). As a consequence of BN, bud potential fertility was drastically reduced from 0.5 inflorescence primordial (IP) per bud (in July) to 0.06 (in December) and bud burst in the next cycle from secondary and tertiary bud axes. Vines managed by double pruning system (submitted to summer and winter pruning) displayed a much higher fruitfulness potential, i.e. 1.46 IP per bud in December (112 days after winter pruning) and limited BN occurrence (20 %). On single pruned vines, we also observed a significant decrease of starch content in canes, trunks and roots. Internal bud anatomy showed that a random cell breakdown started 70 days DASP. At 211 DASP, all buds showed a large starch granule concentration, raphides and crystals of calcium oxalate inside idioblasts of leaf primordia and also in cortical parenchyma of the vegetative axis. The bud starch content was increased and a positive correlation between necrosis and starch accumulation was observed. The impact of carbohydrate availability on bud necrosis development was discussed. This study showed that the necrosis development towards secondary and tertiary axis of the dry season buds is the main reason of unfruitfulness in the vineyards managed by single pruning in the wet season, making the double pruning compulsory

Enhancement of Trichoderma harzianum CFAM-422 for cellulase and hemicellulase production by deletion of the carbon catabolite repressor gene cre1.

Carbon catabolite repression (CCR) is a mechanism by which microorganisms can utilize preferably highly energetic compounds over those of difficult degradation. For Trichoderma reesei, the protein that acts as repressor in the presence of glucose is CRE1. In this project, we aim to delete cre1 gene in Trichoderma harzianum CFAM-422 and obtain mutants with enhanced production of biomass degrading enzymes. Disruption of cre1 in T. harzianum CFAM-422 was performed by gene replacement of cre1 for hph (hygromycin B phosphotransferase) via homologous recombination. Hygromycin resistant mutants and parental strains enzyme production was evaluated in both inductive and repressive conditions in four different carbon sources. Enzymatic indexes (EI) were determined and compared. All genetically stable transformants showed increased enzymatic index under inductive conditions and modest inhibition under repressive conditions for most carbon sources, indicating that the deletion of cre1 in T. harzianum can be beneficial to cellulase and hemicellulase production with reduced product inhibition.SINAFERM; SHEB. 3 a 6 de setembro. Seção Trabalhos. Ref. 59019