10 research outputs found

    An Acidic Thermostable Recombinant Aspergillus nidulans Endoglucanase Is Active towards Distinct Agriculture Residues

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    Aspergillus nidulans is poorly exploited as a source of enzymes for lignocellulosic residues degradation for biotechnological purposes. This work describes the A. nidulans Endoglucanase A heterologous expression in Pichia pastoris, the purification and biochemical characterization of the recombinant enzyme. Active recombinant endoglucanase A (rEG A) was efficiently secreted as a 35 kDa protein which was purified through a two-step chromatography procedure. The highest enzyme activity was detected at 50 ∘ C/pH 4. rEG A retained 100% of activity when incubated at 45 and 55 ∘ C for 72 h. Purified rEG A kinetic parameters towards CMC were determined as = 27.5 ± 4.33 mg/mL, max = 1.185 ± 0.11 mmol/min, and 55.8 IU (international units)/mg specific activity. Recombinant P. pastoris supernatant presented hydrolytic activity towards lignocellulosic residues such as banana stalk, sugarcane bagasse, soybean residues, and corn straw. These data indicate that rEG A is suitable for plant biomass conversion into products of commercial importance, such as second-generation fuel ethanol

    Intraoperative and early postoperative pain in cats that underwent ovariohysterectomy using a spay hook: a randomised, masked, experimental study

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    Abstract Background This study aimed to compare the feasibility and practicality of the ovariohysterectomy (OHE) technique in cats with or without a spay hook with respect to the incision size, surgical time, surgical variables, and intra- and postoperative pain. Twenty-nine female cats underwent OHE using a spay hook (spay hook group [SHG], n = 15) or without using a spay hook (control group [CG], n = 14) to achieve the ovaries and cervix. Physiological parameters were monitored during the intraoperative period, and postoperative pain was assessed using a multidimensional composite and visual analogue pain scales. Results The SHG had a significantly shorter operative time than the CG. The variables in the intraoperative period showed no statistically significant difference between both groups, as well as the early postoperative pain. Conclusions Less invasive OHE using a spay hook could potentially be a viable and feasible technique when performed by an inexperienced surgeon with appropriate training, especially in sterilisation campaigns, reducing the time to perform the procedure and increasing the number of animals spayed per time

    Extensão universitária em ortopedia veterinária

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    The aim of this project is to collaborate in the development and theoretical-practical training of students and professionals, besides that to promote integration and implementation of acts with the population, through internships, promoting contact between professionals, students and owners. In this aspect, production of didactic materials, programs to prevent diseases and data gathering for presentations and publications were performed. In this study, orthopedic conditions of companion animals were characterized in order to inform general public, collect information for learning and for preventive veterinary medicine. With this purpose, a retrospective study of musculoskeletal system affections at the Veterinary Hospital "Governador Laudo Natel", Faculty of Agricultural and Veterinary Sciences, campus Jaboticabal, from May 2014 to June 2015 was conducted. During this period, 585 patient were selected. From those, 557 were dogs (95,21%) and 28 (4,79%) were cats. It was observed in both cases a higher prevalence of 0-4-year-old (45,4% and 92,8%, respectively) patients. It was found that the most prevalent orthopedic cases included fractures (33,69% in dogs and 92,86% in cats) and cranial cruciate ligament rupture (16,84% in dogs). Thus, the achievement of the extension project enabled the integration of several people, allowing further information and knowledge about veterinary orthopedics.O objetivo deste projeto é colaborar no desenvolvimento e capacitação teórico-prático de alunos e profissionais, além de promover uma integração e implementação de medidas junto à população, por meio de estágios, favorecendo, assim, o contato entre profissionais, alunos e proprietários. Neste aspecto, ocorreu a realização de programas de prevenção das doenças e coleta de dados para apresentação de trabalhos e publicações. Na presente apresentação buscou-se caracterizar as afecções ortopédicas em animais de companhia, visando obter informações que sirvam de instrumento para o aprendizado e medicina veterinária preventiva. Para isto, realizouse o estudo retrospectivo dos casos envolvendo alterações no sistema osteomuscular atendidos no Hospital Veterinário “Governador Laudo Natel”, da Faculdade de Ciências Agrárias e Veterinárias, Campus de Jaboticabal, ocorridos no período de maio de 2014 a junho de 2015. Neste intervalo foram selecionados 585 animais, sendo 557 cães (95,21%) e 28 gatos (4,79%), em ambos observouse uma prevalência maior de animais entre 0-4 anos (45,4% e 92,8%, respectivamente). Constatou-se que os casos ortopédicos de maior prevalência incluíam as fraturas (33,69% em caninos e 92,86% em felinos) e a ruptura do ligamento cruzado cranial do joelho (16,84% em caninos). Desta forma, a realização do Projeto de Extensão possibilitou a integração de diversas pessoas, permitindo a propagação de informações e conhecimento a respeito da ortopedia veterinária

    Characterisation of microbial attack on archaeological bone

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    As part of an EU funded project to investigate the factors influencing bone preservation in the archaeological record, more than 250 bones from 41 archaeological sites in five countries spanning four climatic regions were studied for diagenetic alteration. Sites were selected to cover a range of environmental conditions and archaeological contexts. Microscopic and physical (mercury intrusion porosimetry) analyses of these bones revealed that the majority (68%) had suffered microbial attack. Furthermore, significant differences were found between animal and human bone in both the state of preservation and the type of microbial attack present. These differences in preservation might result from differences in early taphonomy of the bones. © 2003 Elsevier Science Ltd. All rights reserved
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