scholarly journals ANÁLISE SENSORIAL DE MÉIS DE APIS MELLIFERA E MELIPONA SUBNITIDA NA REGIÃO OESTE DO RIO GRANDE DO NORTE

Author(s):  
Tasyely Daylhany Freire de Lima ◽  
Daiana da Silva Sombra ◽  
Daniel de Oliveira Souza ◽  
Kaliane Alessandra Rodrigues de Paiva ◽  
Patrícia de Oliveira Lima
Author(s):  
Patricia Argemira Costa ◽  
Izabel Cristina Freitas Moraes ◽  
Ana Mônica Q.B. Bittante ◽  
Paulo José do Amaral Sobral ◽  
Catarina A. Gomide ◽  
...  

The aim of this work was to study the rheological, thermal and some other physical-chemical properties of selected honeys produced in the Northeast of Brazil. Two samples were produced by native “Jandaira” bees (Melipona subnitida) and ten other samples by Africanized bees (Apis mellifera). The samples were analyzed for pH, water activity (aW), soluble solids and water content. Viscosity flow curves were obtained using a rheometer (25ºC, 0-100s-1). Thermal analyses were performed on a differential scanning calorimeter, with heating rate of 10ºC/min (-100 to 100ºC). The water content and the pH of the honey samples varied from 17.2 to 27.9% and from 3.2 to 4.2, respectively, and, the aW of the samples varied from 0.57 to 0.74. Two samples were out of specification with respect to water content, according to Brazilian laws. In relation to rheology, all honey samples showed Newtonian behaviour with no thixotropy or dilatancy. The viscosity varied as an exponential function of the water content. The highest viscosity was obtained for the sample with lower values of water content and aW. Thermograms showed a glass transition (Tg) occurring between -52.4 and -42.6ºC, in the samples produced by Apis mellifera and -67.6 and -57.0ºC for the other samples. A linear relationship was obtained between Tg and water content. In conclusion, the honey viscosity depended on the water content of the product. The higher the water value and therefore the greater the aw, the lower viscosity and Tg of the samples.


Author(s):  
Daniel Santiago Pereira ◽  
Maria Rociene Abrantes ◽  
Wesley Adson Costa Coelho ◽  
Marinalva Oliveira Freitas ◽  
Carlos Iberê Alves Freitas ◽  
...  

<p>A Própolis de abelhas africanizadas (<em>Apis mellifera</em> L.) é um produto da colmeia, elaborado a partir de exsudações de resinas que as abelhas recolhem de determinadas plantas. A composição química da própolis é complexa e relacionada à diversidade vegetal encontrada em torno da colmeia. Estudos recentes demonstram que a própolis possui uma série de propriedades biológicas, essas propriedades têm feito da própolis uma importante matéria-prima para as indústrias farmacêutica, alimentícia e de cosméticos. O estudo dessas propriedades é, portanto, necessário, a fim de se obter um produto com alto padrão de qualidade e valor agregado. Este trabalho tem como objetivo a avaliação do efeito de sete diferentes extratos alcoólicos da própolis (EAP) apícola Potiguar no desenvolvimento de quatro microrganismos de importância veterinária. As colmeias habitadas com enxames de abelhas africanizadas (<em>Apis mellifera</em> L.) selecionados para coleta da própolis estavam organizadas em apiários, distribuídos em região de vegetação distinta no estado do Rio Grande do Norte, Brasil. As coletas de material no campo ocorreram no período dos meses de outubro a dezembro de 2013, a obtenção dos extratos e os ensaios do potencial antibiótico ocorreram durante o ano de 2014.  Foi identificado que os EAP 1, 6 e 7 foram ativos nos quatro microrganismos testados, e os EAP 3 e 4 não demonstraram-se ativos para nenhum microrganismo. Os resultados encontrados evidenciam a superioridade da própolis vermelha do mangue Potiguar quando comparados aos resultados citados em outros estudos para os mesmos microrganismos.</p><p align="center"><strong><em>Antibiotic potential of the Potiguar bee propolis on the bacteria of veterinary importance</em></strong></p><p><strong>Abstract: </strong>Propolis Africanized bees (Apis mellifera L.) is a product of the bee hive, elaborated based on exudates resins that bees collect from certain plants. The chemical composition of propolis is complex and related to plant diversity found around the bee hive. Recent studies have shown that propolis has a number of biological properties, these properties have made from propolis an important raw material for the pharmaceutical, food and cosmetic industries. The study of the properties is therefore necessary in order to obtain a product with a high standard of quality and value. This study aims to evaluate seven different alcoholic extracts of propolis (AEP), of Potiguar honey bees, in the development of four microorganisms of great veterinary importance. The bee hives inhabited by swarms of Africanized bees (<em>Apis mellifera</em> L.) selected for the collection of propolis were organized in apiary distributed in different vegetation region in the state of Rio Grande do Norte, Brazil. The material collected in the field occurred in the period from October to December 2013, obtaining the extracts and antibiotic potential of the trials took place during the year 2014. It was identified that the EAP 1, 6 and 7 were active in all four tested microorganisms, and the EAP 3 and 4 are not demonstrated to be active for any microorganism. The results show the superiority of red propolis Potiguar of mangrove when compared to the results cited in other studies for the same microorganisms.</p>


2011 ◽  
Vol 68 (2) ◽  
pp. 255-259 ◽  
Author(s):  
Annelise de Souza Rosa ◽  
Betina Blochtein ◽  
Diego Kweco Lima

Although canola, (Brassica napus L.), is considered a self-pollinating crop, researchers have indicated that crop productivity increases as a result of honey bee Apis mellifera L. pollination. Given this crop's growing importance in Rio Grande do Sul State, Brazil, this work evaluated the increase in pod and seed productivity with respect to interactions with anthophilous insects and manual pollination tests. The visiting frequency of A. mellifera was correlated with the crop's blooming progression, and productivity comparisons were made between plants visited by insects, manually pollinated plants (geitonogamy and xenogamy) and plants without pollination induction. Pod set and seed production per plant were determined for each treatment. Among the 8,624 recorded flower-visiting insects, Hymenoptera representatives were the most prevalent (92.3%), among which 99.8% were A. mellifera. The correlation between these bees and blooming progression was positive (r = 0.87; p = 0.002). Pollination induction increased seed productivity from 28.4% (autogamy) to 50.4% with insect visitations, as well as to 48.7 (geitonogamy) and to 55.1% (xenogamy) through manual pollination.


Author(s):  
Manuela Costa de Menezes ◽  
Bruna C. Cesário ◽  
Natanael S. Félix ◽  
Renato L. B. Silva ◽  
Daniela R. F. Sousa ◽  
...  

2018 ◽  
Vol 31 (3) ◽  
pp. 773-778
Author(s):  
LUCAS DE ALMEIDA BIZOTTO ◽  
REGIS SIVORI SILVA DOS SANTOS ◽  
MARI INÊS CARISSIMI BOFF

ABSTRACT The apple tree depends on cross-pollination for adequate fruiting. The objective of this study was to evaluate the rate of parasitism by Varroa destructor mites and the infection rate of Nosema sp. in hives of Apis mellifera (Linnaeus) used in pollinating services in apple orchards in the municipality of Vacaria, Rio Grande do Sul state, Brazil. The study evaluated the sanitation of beehives before, during, and after apple orchard pollination. Natural parasitism by V. destructor and the presence of Nosema sp. spores were evaluated in hives from areas of forest and canola cultivation (in the 2014/2015 harvest), and from areas of forest and eucalyptus reforestation (2015/2016 harvest). In both harvests, the average rate of parasitism in the hives by V. destructor ranged from 3.0 to 6.7%. The levels of parasitism increased during the pollination period in hives from canola-cultivated areas (2014/2015 harvest), but not in those from the forest and eucalyptus reforestation areas. Spores of Nosema sp. were observed in hives in the 2014/2015 harvest but not in the 2015/2016 harvest. The levels of natural parasitism by V. destructor in A. mellifera hives used in pollination services remained low, and was within the levels reported for the southern region of Brazil. Additionally, the levels of Nosema sp. infection in the hives was low.


2020 ◽  
Vol 43 ◽  
pp. e50383
Author(s):  
Wedson de Lima Tôrres ◽  
João Claudio Vilvert ◽  
Airton Torres Carvalho ◽  
Ricardo Henrique de Lima Leite ◽  
Francisco Klebson Gomes dos Santos ◽  
...  

The aim of this study was to evaluate the physicochemical quality and bioactive compounds of Apis mellifera honey as well as the alterations in the quality of A. mellifera honey after being used in the feeding of Melipona subnitida colonies. A. mellifera honeys were collected in apiaries, homogenised and used as feed for M. subnitida bees for 30 days. Every five days, honey samples were collected and evaluated for physicochemical characteristics and bioactive compounds. The treatments consisted of natural honeys of A. mellifera and M. subnitida and honey of M. subnitida bee after being fed with A. mellifera honey (modified honey). M. subnitida bees, when fed with honey from A. mellifera, modified some of its characteristics, such as moisture, reducing sugars, diastase activity, colour and flavonoid content. Natural and modified honeys of A. mellifera were similar to each other and different from M. subnitida honey in terms of minerals, free acidity, electrical conductivity, phenolic content and antioxidant activity. Treatments were similar in terms of sucrose, insoluble matter, hydroxymethylfurfural and water activity. In general, the quality attributes of the modified honey were closer to the honey of A. mellifera than to the natural M. subnitida honey.


2020 ◽  
Vol 6 (7) ◽  
pp. 50633-50646
Author(s):  
Maria da Conceição Tavares Cavalcanti Liberato ◽  
Kamila de Lima Barbosa ◽  
Amanda Batista Nascimento ◽  
Kananda Lara Santos Sales ◽  
Sarah Geysa de Oliveira Ribeiro ◽  
...  

Author(s):  
Kananda Lara Santos Sales ◽  
Kamila de Lima Barbosa ◽  
Amanda Batista Nascimento ◽  
Geovana Costa Aguiar ◽  
Álvaro Ventorini Vasconcelos ◽  
...  

2018 ◽  
Vol 11 (3) ◽  
pp. 191-200
Author(s):  
Alexandre Somavilla ◽  
Karine Schoeninger ◽  
David Silva Nogueira ◽  
Andreas Kohler

Resumo. A grande riqueza de abelhas está atrelada à grande diversidade de plantas com flores, que possuem certas atratividades para garantir a visita às flores, e consequente polinização. No Rio Grande do Sul, estudos sobre a fauna de abelhas e a flora apícola associada já foram realizados, porém ainda são escassos. Desta forma, correlacionamos os táxons de abelhas e espécies de plantas coletados em uma área florestal urbana e verificamos as relações ecológicas e tróficas entre elas, especialmente ao nicho da abelha exótica Apis mellifera Linnaeus, sobre as abelhas silvestres. Coletamos nas flores um total de 2.772 abelhas determinadas em cinco famílias, 54 gêneros e 88 táxons. Apidae foi a família melhor representada com 35 espécies e 2.047 indivíduos. As abelhas foram coletadas em 43 espécies de plantas classificadas em 19 famílias botânicas sendo Asteraceae a mais visitada. A planta com o maior número de abelhas coletadas foi Citrus sinensis (L.), 30% do total, tendo A. mellifera a mais representativa. 34% dos táxons de abelhas estão correlacionados às espécies de plantas visitadas, contudo, quando verificamos esta correlação excluindo a espécie A. mellifera,ocorre um aumento significativo, atingindo 93%. A manutenção deste fragmento vegetal a suas flores é importante para conservação da biodiversidade apifauna local.Diversity of bees (Hymenoptera: Apoidea) and floral visitation in an Atlantic Forest area in southern BrazilAbstract. The high bees’ richness is associated to the great diversity of flowering plants, which have some attractiveness to ensure flowers visiting and the consequent pollination. In Rio Grande do Sul state, studies on the bee fauna associated with bee flora have already been made but are uncommon. In this way, the taxa of bees and plants species visited were correlated, and the ecological and trophic relations between them, particularly in relation to the niche of the exotic bee Apis mellifera Linnaeus on wild bees were analyzed, in an urban forest area. We collected 2,772 bees from the flowers, determined in five families, 54 genera and 88 taxa. Apidae was the best family represented with 35 species and 2,047 individuals. The bees were collected from 43 plants species, classified in 19 botanical families, Asteraceae are the most visited. The plant with the largest number of bees collected was Citrus sinensis (L.), 30% of the bees, and the A. mellifera the most representative. 34% of the taxa of bees are correlated to the species of plants visited, however, when we see this correlation excluding A. mellifera, there is a significant increase, reaching 93%. The maintenance of this plant fragment and the flowers is important for preserving the bees’ biodiversity in this site.


2013 ◽  
Vol 2 (1) ◽  
Author(s):  
Patricia Argemira Costa ◽  
Izabel Cristina Freitas Moraes ◽  
Ana Mônica Q.B. Bittante ◽  
Paulo José do Amaral Sobral ◽  
Catarina A. Gomide ◽  
...  

The aim of this work was to study the rheological, thermal and some other physical-chemical properties of selected honeys produced in the Northeast of Brazil. Two samples were produced by native “Jandaira” bees (Melipona subnitida) and ten other samples by Africanized bees (Apis mellifera). The samples were analyzed for pH, water activity (aW), soluble solids and water content. Viscosity flow curves were obtained using a rheometer (25ºC, 0-100s-1). Thermal analyses were performed on a differential scanning calorimeter, with heating rate of 10ºC/min (-100 to 100ºC). The water content and the pH of the honey samples varied from 17.2 to 27.9% and from 3.2 to 4.2, respectively, and, the aW of the samples varied from 0.57 to 0.74. Two samples were out of specification with respect to water content, according to Brazilian laws. In relation to rheology, all honey samples showed Newtonian behaviour with no thixotropy or dilatancy. The viscosity varied as an exponential function of the water content. The highest viscosity was obtained for the sample with lower values of water content and aW. Thermograms showed a glass transition (Tg) occurring between -52.4 and -42.6ºC, in the samples produced by Apis mellifera and -67.6 and -57.0ºC for the other samples. A linear relationship was obtained between Tg and water content. In conclusion, the honey viscosity depended on the water content of the product. The higher the water value and therefore the greater the aw, the lower viscosity and Tg of the samples.


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