Publicações - ciências agrárias
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Carlos Eduardo Bortolan Toazza;
Caroline Marques;
Wanderlei do Amaral;
Masson, Maria Lucia
Palavra-chave:
Plant essential oils;
lemongrass;
iron chelation;
antimicrobial potential;
natural antioxidants;
surface coating
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Ciência e Tecnologia de Alimentos; Engenharia de Alimentos; Instalações Industriais de Produção de Alimentos;
CIENCIAS_AGRARIAS; Ciência e Tecnologia de Alimentos; Tecnologia de Alimentos; Tecnologia de Produtos de Origem Vegetal
resumo ...
Elyonurus muticus (Em) is a discarded native grass from South America, and its essential oil recently demonstrated properties comparable to Cymbopogon flexuosus (Cf) and Cymbopogon citratus (Cc) es...
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VILLAVERDE CENDON, FERNANDO;
Andresa Sousa Carvalho;
Regina Maria Matos Jorge;
Alvaro Luiz Mathias
Palavra-chave:
hydrogel;
drying;
pyrolysis;
Alginate;
whey protein
Áreas do conhecimento:
Ciências Biológicas; Biotecnologia; Biotecnologia Vegetal; Tecnologia de Processos e Produtos;
CIENCIAS_AGRARIAS; Ciência e Tecnologia de Alimentos; Tecnologia de Alimentos; Tecnologia de Produtos de Origem Vegetal
resumo ...
Water retention and thermostability of powders and films of whey protein isolate (WPIp, dWPIf), sodium alginate (NaALGp, NaALGf), and their dry hydrospheres were evaluated by thermogravimetric analysis to demonstrate the importance of the gelling cation, for the first time in the case of the protein, and some potential applications. WPIp retained less water (7.1%) than ALGp (20.4%) due to the greater hydrophilicity of the polysaccharide. The difference was smaller for the films (12.3% and 18.8%, respectively) due to the incorporation of water during protein denaturation. Dried ALG beads retained less water than the film and the water content was dependent on the crosslinking cation (CaALGs > ZnALGs > CdALG). Protein films and spheres exhibited water retention very similar to CaALGs. The degradation of ZnALGs (smallest radius cation used and monodentate coordination) began at the lowest temperature (168 °C) and exhibited the highest mass loss as compared to CaALGs (171 °C) or CdALGs (176 °C, both with bidentate coordination). For the protein, Zn2+ also exhibited the lowest degradation peak temperature. Pyrolisis of powders, films and spheres demonstrate that the protein is more stable than the polyssacharide. Therefore, it can act as a better flame retardant agent than alginate. On the other hand, only alginate spheres were suitable for the production of activated carbon (190.0 m2 g−1) and the recovery of metal oxides.
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Diego Moreira de Souza;
Loani Weber Garcia;
Juliana Pereira Fonseca;
Gilson de Mendonça;
Cintia Macedo Costa;
Eduardo Luis Cupertino Ballester;
Ricardo Robaldo
Palavra-chave:
piscicultura;
tilápias
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Aqüicultura;
CIENCIAS_AGRARIAS; Recursos Pesqueiros e Engenharia de Pesca; Aqüicultura; Piscicultura
resumo ...
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Stephany Buba Lucina;
Ana Paula Sarraf Lopes;
Marcela Wolf;
Vinícius Bentivóglio Costa Silva;
Marlos Gonçalves Sousa;
Tilde Rodrigues Froes
Palavra-chave:
cardiologia veterinária;
cardiopatia congênita;
ecocardiografia
Áreas do conhecimento:
Ciências da Saúde; Medicina; Clínica Médica; Cardiologia;
CIENCIAS_AGRARIAS; Medicina Veterinária; Clínica e Cirurgia Animal; Diagnóstico por Imagem
resumo ...
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DE ABREU, ANA CLAUDIA MACHINSKI RANGEL;
WEISS, ROMILDO ROMUALDO;
BUSATO, EDUARDA MACIEL;
Rosangela Locatelli Dittrich;
KOZICKI, LUIZ ERNANDES;
DE LARA, NATÁLIA SANTANA SIQUEIRA;
ASCHENBRENNER, GLÁUCIA APARECIDA
Palavra-chave:
Neospora caninum;
semen
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Patologia Animal; Patologia Clínica Animal
resumo ...
(en)
The objective of the present study was to develop a diluent of bull semen efficient in the control of Neospora caninum. The antimicrobial test (experiment 1) -trimethoprim isolated (TRI) and associated with sulfadiazine (SDT) and sulfamethoxazole (SMT), clarithromycin (CLA), erythromycin (ERI), azithromycin (AZI) and clindamycin (CLI) - was performed using cell culture and evaluated for the presence of free tachyzoites and the cytopathic effect in the monolayer. The antimicrobials that proved effective in controlling the tachyzoites in vitro were used in the preparation of the diluent for the semen. Each antimicrobial was evaluated for sperm toxicity (experiment 2) with 8 groups (7 groups received an antibiotic in the diluent except for 1 group - control group). In relation to the morphological analysis, the SMT and AZI groups showed more acrosomal and tail defects. The SDT, SMT and AZI groups presented lower values of Average Path Velocity. The Straight-line Velocity was lower in the SMT and AZI groups and the Beat/cross Frequency was also lower in the CLI and AZI groups. The Curvilinear Velocity values of the SDT, SMT and CLA groups were lower. The SMT, ERI and AZI groups showed lower values of Total Motility and Progressive Motility. As for flow cytometry, the SDT, SMT and AZI groups presented higher percentages of acrosome reaction and damaged plasma membrane. The antibiotics can be added to the diluent of bull semen were clindamycin, clarithromycin and trimethoprim.
(pt)
O objetivo do presente estudo foi desenvolver um diluente de sêmen de touros eficiente no controle de Neospora caninum. O teste dos antimicrobianos (experimento 1) - trimetoprim isolado (TRI) e associado a sulfadiazina (SDT) e ao sulfametoxazol (SMT), claritromicina (CLA), eritromicina (ERI), azitromicina (AZI) e clindamicina (CLI) - foi realizado utilizando cultivo celular e avaliado quanto à presença de taquizoítas livres e ao efeito citopático na monocamada. Os antimicrobianos que se mostraram eficazes no controle dos taquizoítos in vitro foram utilizados na preparação do diluente para o sêmen. Cada antimicrobiano foi avaliado quanto à toxicidade dos espermatozóides (experimento 2) sendo 8 grupos (7 grupos receberam antibiótico no diluente, exceto 1 grupo- grupo controle). Em relação à análise morfológica, os grupos SMT e AZI apresentaram mais defeitos de acrossoma e de cauda.Os grupos SDT, SMT e AZI apresentaram valores mais baixos da Velocidade de Trajeto. A Velocidade Progressiva foi menor nos grupos SMT e AZI e a Frequência de Batimentos de cauda também foi menor nos grupos CLI e AZI. Os valores de Velocidade Curvilinear dos grupos SDT, SMT e CLA foram menores. Os grupos SMT, ERI e AZI apresentaram valores mais baixos de Motilidade Total e Motilidade Progressiva. Quanto à citometria de fluxo, os grupos SDT, SMT e AZI apresentaram percentagens maiores de reação acrossomal e membrana plasmática lesada. Os antibióticos que podem ser adicionados ao diluente de sêmen bovino foram clindamicina, claritromicina e trimetoprim.
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KOCH, GABRIEL;
LUCIMERIS RUARO SCHUTA;
CALEGARIO, RENATA FAIER;
João Carlos Bespalhok Filho;
Edelclaiton Daros;
Ricardo Augusto de Oliveira;
DUARTE, HENRIQUE DA SILVA SILVEIRA
Palavra-chave:
Cana-de-açúcar;
Fitopatologia
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Agronomia; Fitossanidade; Fitopatologia
resumo ...
Orange rust (OR) and brown rust (BR) are among the most important diseases of sugarcane. The objective of this work was to evaluate the efficiency of fungicides in the control of both rusts. Two experiments, one for each rust, were conducted in the state of Paraná, Brazil, in plant cane and in ratoon. A randomized block design with 8 treatments and three replications was used. The treatments were: control (T1), pyraclostrobin (T2), pyraclostrobin + epoxiconazole (T3), azoxystrobin + cyproconazole (T4), azoxystrobin + tebuconazole (T5), trifloxystrobin + tebuconazole (T6), azoxystrobin + benzovindiflupyr (T7) and pyraclostrobin + fluxapyroxad (T8). The cultivars RB72454 and RB835486 were used for their susceptibility to OR and BR, respectively. Four applications of fungicides were carried out in plant cane and also in ratoon, in a 30-day intervals. With the severity data over time, the relative area under the disease progress curve (rAUDPC) was calculated. After harvest, yield (tons of cane per hectare-TCH), yield recovery compared to the control (YR) (%), pol% cane (PC) and tons of pol per hectare (TPH) were obtained. From rAUDPC results, treatments T3, T4, T5, and T7 were the most efficient for the control of OR and treatments T2, T3, T4, T5, T7 and T8 were the most efficient for controlling BR. Yield was affected by treatments only in ratoon in both experiments. The YR ranged from 18.5% to 31.1% and from 16.1% to 37.7% to OR and BR, respectively. There were no differences between treatments for PC in both experiments and TPH was influenced by treatments in ratoon in the BR experiment.
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Adilson Reidel;
Arcangelo Augusto Signor;
Aldi Feiden;
WILSON ROGERIO BOSCOLO;
Elizabeth Romagosa
RESEARCH, SOCIETY AND DEVELOPMENT,
v. 10,
n. 2,
p. 1-12,
2021
Palavra-chave:
espécies nativas;
nutrição de peixes;
Cultivo intensivo
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Aqüicultura
resumo ...
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DOMINSCHEK, RUBIA;
BARROSO, ARTHUR ARROBAS MARTINS;
Lang, Claudete Reisdorfer;
Aníbal de Moraes;
Reuben Mark Sulc;
SCHUSTER, MAURICIO ZANOVELLO
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Sistemas integrados
resumo ...
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LETTI, LUIZ ALBERTO JÚNIOR;
Soccol, Carlos Ricardo;
Karp, Susan Grace;
Carla Forte Maiolino Molento;
COLONIA, BRIGITTE STHEPANI OROZCO;
BOSCHERO, RAPHAEL APARECIDO;
Soccol, Vanete Thomaz;
HERRMANN, LEONARDO WEDDERHOFF;
PENHA, RAFAELA DE OLIVEIRA;
WOICIECHOWSKI, ADENISE LORENCI
Palavra-chave:
future food;
cultivated meat;
tissue engineering;
food sustainability;
bioeconomy;
recent patents
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Bem-estar animal
resumo ...
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Bruno César Gurski;
Jorge L Moretti de Souza;
Alexandre Cândido Xavier;
Aline Aparecida dos Santos
IRRIGA,
v. 26,
n. 2,
p. 293-314,
2021
Palavra-chave:
Componentes hídricas;
balanço hídrico;
Culturas
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Engenharia Agrícola; Engenharia de Água e Solo
resumo ...
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