Qualidade de amostras de mel comercializadas em feiras livres do município de Mossoró, RN / Quality of honey samples marketed in the municipal district of Mossoró, RN, Brazil

O trabalho teve como objetivo avaliar a qualidade de amostras de mel comercializadas em feiras livres do município de Mossoró, RN. Foram realizadas análises físico-químicas e microbiológicas. Nas análises físico-químicas observou-se umidade (12 amostras) e acidez (14 amostras). Na microbiológica foram avaliadas 13 amostras para determinação do Número Mais Provável (NMP) de coliformes a 45°C. As análises de umidade variaram de 17,45 a 18,95 % de acordo com a legislação. A acidez variou de 11 a 42 meq. Kg-1 seguindo o determinado pela legislação. Na análise microbiológica uma amostra (7,7%) foi positiva para a presença de coliformes termotolerantes (45°C). O mel comercializado sem inspeção deve ser evitado, pois esse não apresenta garantia de qualidade ao consumidor, podendo causar transtornos à saúde.

The study aimed to evaluate the quality of honey samples sold in street markets in the city of Mossoró, RN, Brazil. Were carried out physical-chemical and microbiological. The physical and chemical analysis showed humidity (12 samples) and acidity (14 samples). In 13 microbiological samples were evaluated to determine the most probable number (MPN) of coliforms at 45 ° C. The humidity ranged from 17.45 to 18.95% in accordance with the law. Acidity ranged from 11 to 42 meq. Kg-1 determined by following the law. In a microbiological sample (7.7%) was positive for the presence of fecal coliforms (45 ° C). Honey sold without inspection should be avoided, as this does not have assurance to the consumer, may cause health disorders.

Toxicidade do pólen de Mimosa tenuiflora para abelhas (Apis mellifera L) africanizadas / Toxicity of Mimosa tenuiflora pollen to Africanized honey bees (Apis mellifera L)

Mimosa tenuiflora (Willd.) Poir. (Mimosaceae) is a xerophilous plant which is very common in degraded areas in the Brazilian semi-arid region, including areas of beekeeping. The ingestion of leaves from M. tenuiflora by ruminants is responsible for malformations. Chemical analyses of this plant revealed that it contains several secondary compounds including three triterpenoidal saponins, designated Mimonosides A–C, four flavones, five flavanones and four chalcones. Several plant species contain secondary compounds in nectar and pollen that could be toxic to pollinators, including bees. Experimental approaches are necessary to identify plant species that produce pollen that is toxic to bees. The present study aimed to determine the toxic potential of M. tenuiflora (Willd.) Poir. (Mimosaceae) pollen to Africanized honey bees (Apis mellifera L.).(AU)

Qualidade de amostras de mel comercializadas em feiras livres do município de mossoró, RN / Quality of honey samples marketed in the municipal district of Mossoró, RN Brazil

O trabalho teve como objetivo avaliar a qualidade de amostras de mel comercializadas em feiras livres do município de Mossoró, RN. Foram realizadas análises físico-químicas e microbiológicas. Nas análises físico-químicas observou-se umidade (12 amostras) e acidez (14 amostras). Na microbiológica foram avaliadas 13 amostras para determinação do Número Mais Provável (NMP) de coliformes a 45°C. As análises de umidade variaram de 17,45 a 18,95 % de acordo com a legislação. A acidez variou de 11 a 42 meq. Kg-1 seguindo o determinado pela legislação. Na análise microbiológica uma amostra (7,7%) foi positiva para a presença de coliformes termotolerantes (45°C). O mel comercializado sem inspeção deve ser evitado, pois esse não apresenta garantia de qualidade ao consumidor, podendo causar transtornos à saúde.(AU)

The study aimed to evaluate the quality of honey samples sold in street markets in the city of Mossoró, RN, Brazil. Were carried out physical-chemical and microbiological. The physical and chemical analysis showed humidity (12 samples) and acidity (14 samples). In 13 microbiological samples were evaluated to determine the most probable number (MPN) of coliforms at 45 ° C. The humidity ranged from 17.45 to 18.95% in accordance with the law. Acidity ranged from 11 to 42 meq. Kg-1 determined by following the law. In a microbiological sample (7.7%) was positive for the presence of fecal coliforms (45 ° C). Honey sold without inspection should be avoided, as this does not have assurance to the consumer, may cause health disorders.(AU)

Toxicidade do pólen de Mimosa tenuiflora para abelhas (Apis mellifera L) africanizadas / Toxicity of Mimosa tenuiflora pollen to Africanized honey bees (Apis mellifera L)

Mimosa tenuiflora (Willd.) Poir. (Mimosaceae) is a xerophilous plant which is very common in degraded areas in the Brazilian semi-arid region, including areas of beekeeping. The ingestion of leaves from M. tenuiflora by ruminants is responsible for malformations. Chemical analyses of this plant revealed that it contains several secondary compounds including three triterpenoidal saponins, designated Mimonosides A–C, four flavones, five flavanones and four chalcones. Several plant species contain secondary compounds in nectar and pollen that could be toxic to pollinators, including bees. Experimental approaches are necessary to identify plant species that produce pollen that is toxic to bees. The present study aimed to determine the toxic potential of M. tenuiflora (Willd.) Poir. (Mimosaceae) pollen to Africanized honey bees (Apis mellifera L.).