Possible international directive for quality control of bee pollen

Comunicação oral da qual só está disponível a apresentação.Possible international directive for quality control of bee pollen.Fundação Ciência e Tecnologia de Portugal POCTI (FEDER) & COMPETE, Ciência Viv

Chemical analysis of Greek pollen - Antioxidant, antimicrobial and proteasome activation properties

<p>Abstract</p> <p>Background</p> <p>Pollen is a bee-product known for its medical properties from ancient times. In our days is increasingly used as health food supplement and especially as a tonic primarily with appeal to the elderly to ameliorate the effects of ageing. In order to evaluate the chemical composition and the biological activity of Greek pollen which has never been studied before, one sample with identified botanical origin from sixteen different common plant taxa of Greece has been evaluated.</p> <p>Results</p> <p>Three different extracts of the studied sample of Greek pollen, have been tested, in whether could induce proteasome activities in human fibroblasts. The water extract was found to induce a highly proteasome activity, showing interesting antioxidant properties. Due to this activity the aqueous extract was further subjected to chemical analysis and seven flavonoids have been isolated and identified by modern spectral means. From the methanolic extract, sugars, lipid acids, phenolic acids and their esters have been also identified, which mainly participate to the biosynthetic pathway of pollen phenolics. The total phenolics were estimated with the Folin-Ciocalteau reagent and the total antioxidant activity was determined by the DPPH method while the extracts and the isolated compounds were also tested for their antimicrobial activity by the dilution technique.</p> <p>Conclusions</p> <p>The Greek pollen is rich in flavonoids and phenolic acids which indicate the observed free radical scavenging activity, the effects of pollen on human fibroblasts and the interesting antimicrobial profile.</p

Valor nutricional do mel e pólen de abelhas sem ferrão da região Amazônica

Avaliou-se os constituintes nutricionais de amostras do mel e pólen das espécies Melipona seminigra merrillae (jandaíra), Melipona compressipes manaosensis (jupará), Melipona rufiventris paraensis (uruçu boca de ralo), provenientes do meliponário da Fazenda Poranga no município de Itacoatiara - AM e Meliponário Abelhudo em Manaus - AM. Os resultados demonstraram o potencial do mel como fonte de energia, particularmente a M. rufiventris com 305,3±2,4 kcal em 100g. O pólen da espécie M. compressipes apresentou a maior concentração de proteína 15,7±0,0% e energia 309,8±0,8 kcal. Tais constatações sugerem a implementação de novos estudos visando à incorporação destes produtos na dieta dos amazônidas, possibilitando uma nova fonte alternativa de alimento potencialmente nutritivo e saudável.<br>We evaluated the nutricional constituent of honey and pollen samples of the Melipona species seminigra merrillae (jandaíra) Melipona compressipes manaosensis (jupará), Melipona rufiventris paraensis (uruçu boca de ralo), proceeding from the Poranga Honey Farm in Itacoatiara - AM, and Meliponário Abelhudo in Manaus, AM. The results demonstrated the potencial of honey as a source of energy, particularly the kcal M. rufiventris with 305.3±2.4 kcal in 100g. The compressis pollen of species presented the highest concentration of protein 15.7±0.0 % and energy 309.8±0.8 kcal. Thus we suggest the implementation of new studies aiming at the incorporation of these products in the diet of the Amazon population, making possible a new potentially nutritional and alternative healthful food source

Study of some physicochemical and rheological properties of irradiated honey

Honey is a sweet substance produced by bees, well appreciated in many places and its consumption has been increased either as raw material or as a food ingredient. Its use as food by the consumer, or even for exportation, implies safety inherent in its quality and processing control. Gamma radiation can be applied in food or ingredients for many objectives like pathogens microorganisms’ reduction, disinfestations, and sterilization. The aim of this work was to verify some physicochemical modifications, as well as rheological evaluation of honey submitted to irradiation at 10 kGy. The physicochemical parameters analyzed were: moisture, HMF, free acidity, pH, sugars and ash. The rheological behavior was measured at different temperatures. The results indicated that few changes occurred; the rheological behavior was not impaired and did not present any significant physicochemical alteration

The Botanical Profiles of Dried Bee Pollen Loads Collected by Apis mellifera (Linnaeus) in Brazil

Submitted by sandra infurna ([email protected]) on 2016-02-02T11:32:02Z No. of bitstreams: 1 monica4_barth_etal_IOC_2013.pdf: 570692 bytes, checksum: 7c7ae59dfe217b3cc6d0f0a3c21c58d8 (MD5)Approved for entry into archive by sandra infurna ([email protected]) on 2016-02-02T11:39:21Z (GMT) No. of bitstreams: 1 monica4_barth_etal_IOC_2013.pdf: 570692 bytes, checksum: 7c7ae59dfe217b3cc6d0f0a3c21c58d8 (MD5)Made available in DSpace on 2016-02-02T11:39:21Z (GMT). No. of bitstreams: 1 monica4_barth_etal_IOC_2013.pdf: 570692 bytes, checksum: 7c7ae59dfe217b3cc6d0f0a3c21c58d8 (MD5) Previous issue date: 2013Universidade Federal do Rio de Janeiro. Rio de Janeiro, RJ, Brasil.Universidade de São Paulo. São Paulo, SP, Brasil.Universidade de São Paulo. São Paulo, SP, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz, Rio de Janeiro, RJ, Brasil.A total of 61 dried bee pollen samples collected in four Brazilian macro-regions within 19 municipalities were analyzed aiming to identify the sources used by Apis mellifera (L.) for pollen production and to enable a more accurate product certification. Sample preparation followed the standard methodology, including washing the pollen grains with ethanol, then with water and homogenising the sediment in a water/glycerine solution for microscopic observation. Pollen counts included at least 500 pollen grains per sample. Only six samples, presenting a unique species or pollen type comprising more than 90% of the pollen sum, were considered monofloral, including Ambrosia sp., Cecropia sp., Eucalyptus sp., Fabaceae, Mimosa scabrella (Benth.) spp. and Schinus sp. pollen types. The most frequent pollen types of the heterofloral pollen batches, based on a counting limit of 45%, included Anadenanthera sp., Asteraceae, Brassica sp., Caesalpiniaceae, Cocos nucifera (L.) sp., Mimosa caesalpiniaefolia (Benth.) sp., Mimosa verrucosa (Benth.) sp., and Myrcia sp. pollen types. This result may be related to the great diversity of the Brazilian flora contributing to heterofloral pollen loads and honeys