RESUMO

Since the composition of honey varies with the species of bee as well as flowering and geographical aspects, this study aimed to evaluate the physicochemical and bioactive properties of Apisand stingless bees'honey from the Brazilian Caatinga. Samples of different species of Apis mellifera L.Meliponini (Melipona subnitida, Frieseomellita varia, Melipona mandacaia, Plebeia sp.) and Apis mellifera L.werecollected from honey producersin the state of Rio Grande do Norte. Honey from A. mellifera and stingless bees showed physicochemical differences in some parameters, especially in moisture, free acidity, HMF, water activity, sugars and electric conductivity. There were no differences in color between honeys from A. mellifera and stingless bees. Honeys fromPlebeia sp., F. varia and A. mellifera showed higher antioxidant capacity followed by honeys fromM. mandacaia and M. subnitida. Flavonoids had little influence on the differentiation of antioxidant activities of stingless bees, while the opposite occurred with the phenolic content, where honeys with the highest levels of phenolic also showed higher antioxidant capacity.(AU)

Assuntos

RESUMO

Worldwide, Brazil holds the fifth position in melon fruits exportation, further expanding its products to provide for the growing demand. This expansion is the result of the development and application of new technologies, including the management of the use of biostimulants. However, for melon crops, the information in the literature on the use of biostimulants remains limited to the effects of different doses on fruit quality at the time of harvest. Therefore, this study aimed to evaluate the influence of different methods of pre-harvest application of two biostimulants on the production and postharvest conservation of fruits of yellow melon cv. Iracema. The treatments consisted of a combination of three factors: two plant biostimulants (Crop Set® and Spray Dunger®), two application methods of the products (fertigation and spraying), and five times of postharvest storage (0, 14, 21, 28 and 35 days). An additional control treatment corresponded to plants without biostimulant application. The fruits were evaluated for production and physicochemical attributes: average mass, yield, flesh firmness, titratable acidity, soluble solids content, SSC/TA ratio, pH, total soluble sugars, and weight loss. Fertigation is the recommended application method of biostimulants for yellow melon due to its effect on the increase of average mass, yield, flesh firmness, soluble solids content, and total soluble sugars of the fruits in relation to the spraying method.

Assuntos

RESUMO

The consumption of turkey ham has been increasing considerably. This product can be marketed sliced, and thus, it is subjected to intense manipulation and presents a high microbial load, which compromises its quality and safety. The objective of this study was to characterize microbiologically vacuum-packed and conventionally packed sliced turkey hams marketed in Mossoró, state of Rio Grande do Norte, Brazil. The analyses consisted of mold and yeast, viable aerobic mesophilic microorganism, and coagulase positive Staphylococcus counts, determination of the most probable number of total coliforms and thermotolerant coliforms, and presence of Salmonella spp. Turkey hams present high microbiological counts regardless of their packaging, but conformity for coliforms at 45 C. Some samples had low quality, denoting that a greater care in the manipulation and conservation of this product is necessary to ensure the safety and absence of risks of this product to public health.

O consumo de presunto de peru tem aumentado consideravelmente. Esse produto pode ser comercializado fatiado e, portanto, é submetido à intensa manipulação e apresenta alta carga microbiana, o que compromete sua qualidade e segurança. O objetivo desse trabalho foi caracterizar microbiologicamente presuntos de peru embalados a vácuo e em embalagens convencionais comercializados em Mossoró, Rio Grande do Norte, Brasil. As análises consistiram em contagem de bolores e leveduras, microrganismos aeróbios mesófilos viáveis e Staphylococcus coagulase positiva, determinação do número mais provável de coliformes totais e coliformes termotolerantes e presença de Salmonella spp. Presuntos de peru apresentaram altas contagens microbiológicas, independentemente de suas embalagens, mas conformidade quanto aos coliformes a 45° C. Algumas amostras apresentaram baixa qualidade, denotando que um maior cuidado na manipulação e conservação deste produto é necessário para garantir a segurança e ausência de riscos deste produto para a saúde pública.

Assuntos

RESUMO

The consumption of turkey ham has been increasing considerably. This product can be marketed sliced, and thus, it is subjected to intense manipulation and presents a high microbial load, which compromises its quality and safety. The objective of this study was to characterize microbiologically vacuum-packed and conventionally packed sliced turkey hams marketed in Mossoró, state of Rio Grande do Norte, Brazil. The analyses consisted of mold and yeast, viable aerobic mesophilic microorganism, and coagulase positive Staphylococcus counts, determination of the most probable number of total coliforms and thermotolerant coliforms, and presence of Salmonella spp. Turkey hams present high microbiological counts regardless of their packaging, but conformity for coliforms at 45 C. Some samples had low quality, denoting that a greater care in the manipulation and conservation of this product is necessary to ensure the safety and absence of risks of this product to public health.(AU)

O consumo de presunto de peru tem aumentado consideravelmente. Esse produto pode ser comercializado fatiado e, portanto, é submetido à intensa manipulação e apresenta alta carga microbiana, o que compromete sua qualidade e segurança. O objetivo desse trabalho foi caracterizar microbiologicamente presuntos de peru embalados a vácuo e em embalagens convencionais comercializados em Mossoró, Rio Grande do Norte, Brasil. As análises consistiram em contagem de bolores e leveduras, microrganismos aeróbios mesófilos viáveis e Staphylococcus coagulase positiva, determinação do número mais provável de coliformes totais e coliformes termotolerantes e presença de Salmonella spp. Presuntos de peru apresentaram altas contagens microbiológicas, independentemente de suas embalagens, mas conformidade quanto aos coliformes a 45° C. Algumas amostras apresentaram baixa qualidade, denotando que um maior cuidado na manipulação e conservação deste produto é necessário para garantir a segurança e ausência de riscos deste produto para a saúde pública.(AU)

Assuntos