7 documents found, page 1 of 1
Supering Apis mellifera (Hymenoptera, Apidae) beehives impairs honey production...
Kadri,Samir Moura; Ribolla,Paulo Eduardo Martins; Alonso,Diego Peres; Jong,David de; Orsi,Ricardo de OliveiraABSTRACT: For honey production, beekeepers add one or more supers to the hives to allow honeybees to store their products. However, the increase in hive space can affect the social and health organization in the colony, promoting stress. This study assessed the management of honey production, physicochemical honey properties, population development, and forages immune system gene expression patterns to be used ...
Energetic supplementation for maintenance or development of Apis mellifera L. c...
Oliveira,Gabriela Pinto de; Kadri,Samir Moura; Benaglia,Bruno Giovane Emilio; Ribolla,Paulo Eduardo Martins; Orsi,Ricardo de OliveiraAbstract Background: The nutritional requirements of honeybees (Apis mellifera) for their complete development need to be supplied through food sources available in the environment, since honeybees are insects that depend directly on blossoming food sources. However, at certain times a food-supply reduction can promote nutritional stress, thus necessitating food supplementation for maintenance or production sti...
Melittin induces in vitro death of Leishmania (Leishmania) infantum by triggeri...
Pereira,Andreia Vieira; Barros,Gustavo de; Pinto,Erika Gracielle; Tempone,Andre Gustavo; Orsi,Ricardo de Oliveira; Santos,Lucilene Delazari dosAbstract Background Apis mellifera venom, which has already been recommended as an alternative anti-inflammatory treatment, may be also considered an important source of candidate molecules for biotechnological and biomedical uses, such as the treatment of parasitic diseases. Methods Africanized honeybee venom from Apis mellifera was fractionated by RP-C18-HPLC and the obtained melittin was incubated with proma...
Produtos naturais para o controle do ácaro Varroa destructor em abelhas african...
Castagnino,Guido Laércio Bragança; Orsi,Ricardo de OliveiraO objetivo deste trabalho foi avaliar os efeitos do ácido oxálico e de óleos essenciais de plantas no controle da infestação pelo ácaro Varroa destructor em colônias de Apis mellifera africanizadas. O experimento foi realizado em delineamento inteiramente casualizado, em 30 colônias, com seis tratamentos e cinco repetições. As colmeias foram tratadas com óleos essenciais de arruda (Ruta graveolens), eucalipto (...
Quality of propolis commercialized in the informal market
Tagliacollo,Victor Alberto; Orsi,Ricardo de OliveiraThe purpose of this research was to evaluate the quality of propolis produced and commercialized informally in São Paulo State through physicochemical analyses of ethanolic extracts of propolis (EEP). Thus, 40 samples of in nature propolis, provided by beekeepers from 32 towns, were analyzed. The EEP were prepared in a proportion of 30% (w/v), and the physicochemical tests were performed according to the Techni...
Estudo de adulteração em méis brasileiros através de razão isotópica do carbono
Souza-Kruliski,Cibele Regina de; Ducatti,Carlos; Venturini Filho,Waldemar Gastoni; Orsi,Ricardo de Oliveira; Silva,Evandro TadeuNeste trabalho, objetivou-se analisar isotopicamente méis comercializados nas regiões Sul e Sudeste do Brasil, para a detecção de fraude. Foram colhidas amostras comerciais com registro no Serviço de Inspeção Federal, Estadual ou Municipal. As amostras foram submetidas à combustão no Analisador Elementar EA 1108 CHN e analisadas no espectrômetro de massas de razão isotópica DELTA-S (Finningan Mat). Os valores i...
Synergistic effect of propolis and antibiotics on the Salmonella Typhi
Orsi,Ricardo de Oliveira; Sforcin,José Maurício; Funari,Silvia Regina Cunha; Fernandes Junior,Ary; Bankova,VassyaThe goal of this work was to investigate a possible synergistic effect between ethanolic extracts of propolis from Brazil and Bulgaria and some antibiotics (Amoxicillin, Ampicillin and Cefalexin) against Salmonella Typhi. Brazilian and Bulgarian propolis showed an antibacterial action, but the sample from Bulgaria was shown to be more efficient. Both samples showed a similar synergistic effect with these antibi...