12 research outputs found
Simultaneous high performance liquid chromatographic analysis of vitamins B1, B2 and B6 in royal jelly
Royal jelly is used as a food supplement, popularly known as rich in B vitamins. The present work has two objectives: firstly, to apply simultaneous quantitative determination by High Performance Liquid Chromatography of thiamin (vitamin B1), riboflavin (vitamin B2) and pyridoxine (vitamin B6) and secondly to compare the obtained data with the Dietary Reference Intake (DRI) values. The values obtained showed no thiamin, a range from 20 to 171 ng g-1 of riboflavin and from 408 to 2 188 ng g-1 of pyridoxine in royal jelly. According to the Food and Nutrition Board (2000), the DRI of these vitamins varies from 0.2-1.4 mg for thiamin; 0.3-1.6 mg for riboflavin and 0.1-2.0 mg for pyridoxine, depending on age and sex. According to these recommendations, royal jelly is not a good source of vitamins B1, B2 or B6 as these vitamins appear only on order of ng g-1. The proposed method can be used in routine analysis for royal jelly, having the advantage of being simple, fast and reliable
Palynological analysis of Brazilian stingless bee pot-honey
Scientific investigation of meliponine honey quality provides detailed information on where the bees go
for food and also as pollinator agents. Palynological analysis of 22 stingless bee honeys, obtained in
several localities of Brazil, showed that ~75% of the samples were monofloral (at least 45% of pollen
grains were of one species). Botanical origin was in agreement with regional vegetation, and pollen
suggests Meliponini maintain activity on a single plant species when nectar is [email protected]
Simultaneous high performance liquid chromatographic analysis of vitamins B1, B2 and B6 in royal jelly
Need for quality control of stingless bee honeys.
Importancia de la revista medula y su política no escrita.Importance of MedULA journal and its non-witten policy.Salinas, Pedro JoséBúsqueda y recuperación de información científica de la base de datos MedLine®.Information storage and retrieval from MedLine databases.Espinoza, NorelkysRincón G., Ángel GabrielEl humor como medio para enfrentar el estrés y su relación con la salud física.Humor as a coping mechanism and physical health.D'Anello Koch, SilvanaNiños con amibiasis, giardiasis y blastocistosis. Respuesta clínica ante tres medicamentos.Children with amibiasis, giardiasis and blastocistosis. Clinical answer to three medicaments.Dávila de Campagnaro, EvilaOlivo Cuesta, CarlaMéndez Camacho, María AlejandraColecistectomía laparoscópica en pacientes mayores de sesenta años.Laparoscopic cholecystectomy in patients 60 years and older.Lucena Olavarrieta, Jorge R.Coronel, PaúlDrenaje subcutáneo profiláctico en obesas sometidas a cesárea.Prophylactic subcutaneous drainage in obeses submitted to cesarean.Reyna Villasmil, EduardoGuerra Velásquez, MeryMejia Montilla, JorlyReyna VIllasmil, NadiaTorres Cepeda, DulySabatini Sáez, IsabelNecesidad del control de calidad de la miel de abejas sin aguijón.Need for quality control of stingless bee honeys.Vit Olivier, PatriciaEnríquez, EuniceBarth, Monika O.Matsuda, Adriana HitomiAlmeida Muradian, Ligia B.Comparación entre electropuntura y compresión isquémica local en el síndrome doloroso miofascial.Comparison between electropuncture and local ischaemic compression in the myofascial pain syndrome.Salinas, Pedro JoséCho Cheng, RosaMonzón de Briceño, YolandaFe de errata al Vol. 15 Nº 1.Corrections to Vol. 15 Nº 1.89 - [email protected][email protected]@[email protected] analíticosemestra
Physicochemical analyses indicated to the quality control of royal jelly with honey Análises físico-químicas indicadas para o controle de qualidade mel com geléia real
Royal jelly (RJ) is used as a revitalizing tonic. In order to avoid rejection to its acid taste, it is added to honey. There are regulations for honey and for royal jelly separately but not for the mixture. The objective of this work is, therefore, to verify if the same methods used for pure honey quality control can be used for honey mixed with royal jelly and also the presence of RJ through 10-HDA determination. The methods used were: moisture, reducing sugars, apparent sucrose, ash, hydroxymethylfurfural, insoluble solids, diastase activity, acidity and 10-HDA. Samples were prepared by adding 0-100% of RJ in honey. The results showed that the ash method was the only suitable one to all the samples. The acidity analysis (direct titration) was suitable to 0-30%RJ samples; the reducing sugar analysis was suitable to 0-20% RJ samples. Concerning moisture analysis the refractometric method is suitable to 0-10% RJ and the Infra Red method is suggested to be used for samples with more than 10% RJ. The methods for diastase activity, HMF, apparent sucrose and insoluble solids were inadequate for all samples with RJ. The presence of RJ in the samples was confirmed by the 10-HDA analyses.<br>A geléia real (GR) é utilizada como produto revitalizante com sabor ácido e adstringente. Para evitar rejeição a este sabor, existem misturas de mel com GR. Existe legislação específica para o mel e para a GR separadamente, mas não para a mistura. Os objetivos do trabalho são: verificar se os métodos usados para o controle de qualidade do mel puro podem ser utilizados no controle do mel com GR e verificar a presença de GR pela determinação do 10-HDA. As análises incluíram: umidade, açúcares redutores, sacarose aparente, cinzas, hydroxymethylfurfural, sólidos insolúveis, atividade diastásica, acidez e 10-HDA. As amostras foram preparadas com 0-100% de GR no mel. Os resultados obtidos sugerem que dos métodos citados na legislação do mel somente o de cinzas foi adequado para todas as amostras. A análise de acidez (titulação direta) foi adequada de 0-30%GR; açúcares redutores 0-20%GR; umidade (método refratométrico) 0-10%GR e sugere-se o método de secagem por IV para as demais amostras. Os métodos para as análises da atividade diastásica, HMF, sacarose aparente e sólidos insolúveis foram inadequados para as amostras com GR. A presença de GR nas amostras foi comprovada pela análise do 10-HDA
Relationship between botanical origin and antioxidants vitamins of bee-collected pollen
This study quantified vitamin C, E and β-carotene in samples of fresh bee-collected pollen and correlating them with the botanical origin. Vitamin content varied between 13.5 and 42.5 µg/g for vitamin E; 56.3 and 198.9 µg/g for β-carotene and 273.9 and 560.3 µg/g for vitamin C. It was concluded that the botanical origin and collecting season influenced the vitamin contents. There is a relationship between the vitamins and its botanical origin: Raphanus sp and Macroptilium sp, Mimosa caesalpineafolia with β-carotene; Raphanus sp, Eucalyptus sp, Macroptilium sp, Mimosa caesalpineafolia with vitamin E and Anadenanthera sp, Arecaceae type and Philodendron sp with vitamin C
Composición de la miel de abejas sin aguijón: estableciendo requisitos de calidad.
Composition of stingless bee honey: setting quality standards
(Almeida Souza, Bruno; Enríquez, Eunice; Roubik, David; Barth, Ortrud; Heard, Tim Ashley; Carvalho, Carlos; Villas Bôas, Jerônimo Khan; Marchini, Luis Carlos; Locatelli, Jean; Persano Oddo, Livia; Almeida Muradian, Ligia B.; Bogdanov, Stefan y Vit Olivier, Patricia)
Abstract
Compositional data from 152 stingless bee (Meliponini) honey
samples were compiled from studies since 1964, and evaluated
to propose a quality standard for this product. Since stingless
bee honey has a different composition than Apis mellifera honey,
some physicochemical parameters are presented according to
stingless bee species. The entomological origin of the honey was
known for 17 species of Meliponini from Brazil, one from Costa
Rica, six from Mexico, 27 from Panama, one from Surinam,
two from Trinidad & Tobago, and seven from Venezuela, most
from the genus Melipona. The results varied as follows: moisture
(19.9-41.9g/100g), pH (3.15-4.66), free acidity (5.9-109.0meq/
Kg), ash (0.01-1.18g/100g), diastase activity (0.9-23.0DN), electrical
conductivity (0.49-8.77mS/cm), HMF (0.4-78.4mg/Kg), invertase
activity (19.8-90.1IU), nitrogen (14.34-144.00mg/100g),
reducing sugars (58.0-75.7g/100g) and sucrose (1.1-4.8g/100g).
Moisture content of stingless bee honey is generally higher than the 20% maximum established for A. mellifera honey. Guidelines
for further contributions would help make the physicochemical
database of meliponine honey more objective, in order to use
such data to set quality standards. Pollen analysis should be directed
towards the recognition of unifloral honeys produced by
stingless bees, in order to obtain standard products from botanical
species. A honey quality control campaign directed to both
stingless beekeepers and stingless bee honey hunters is needed,
as is harmonization of analytical methods.
Composição do mel de abelhas sem ferrão: estabelecendo requisitos de qualidade
(Almeida Souza, Bruno; Enríquez, Eunice; Roubik, David; Barth, Ortrud; Heard, Tim Ashley; Carvalho, Carlos; Villas Bôas, Jerônimo Khan; Marchini, Luis Carlos; Locatelli, Jean; Persano Oddo, Livia; Almeida Muradian, Ligia B.; Bogdanov, Stefan y Vit Olivier, Patricia)
Resumo
Dados de composição de 152 amostras de mel de abelhas sem
ferrão foram compilados de estudos realizados desde 1964, e sendo
avaliados para propor requisitos de qualidade para este produto.
Considerando que o mel de abelhas sem ferrão apresenta
uma composição distinta ao de Apis mellifera, alguns parâmetros
físico-químicos foram apresentados de acordo com a espécie de
abelha sem ferrão. A origem entomológica do mel correspondeu
a 17 espécies de Meliponini do Brasil, uma da Costa Rica, seis
do México, 27 do Panamá, uma do Suriname, duas de Trinidad
& Tobago, e sete da Venezuela, a maioria do gênero Melipona.
Os resultados variaram como segue: umidade (19,9-41,9 g/100g),
pH (3,15-4,66), acidez livre (5,9-109,0 meq/Kg), cinzas (0,01-1,18
g/100g), atividade diastásica (0,9-23,0 DN), condutividade elétrica
(0,49-8,77 mS/cm), HMF (0.4-78.4 mg/Kg), atividade da
invertase (19,8-90,1 IU), nitrogênio (14,34-144,00 mg/100g), açúcares
redutores (58,0-75,7 g/100g) e sacarose (1,1-4,8 g/100g).
O conteúdo de umidade dos méis de abelhas sem ferrão é geralmente
superior ao máximo de 20% estabelecido para o mel
de A. mellifera. As diretrizes oferecidas podem ajudar a expansão
consistente da base de dados físico-químicos de mel de abelhas
sem ferrão, para estabelecer seus requisitos de qualidade.
A análise polínica deve ser direcionada para o reconhecimento
dos méis uniflorais produzidos pelas abelhas sem ferrão, a fim
de obter produtos padronizados de acordo com sua origem botânica.
É necessária uma campanha de controle de qualidade do
mel tanto para os coletores de mel de abelhas sem ferrão, como
para os meliponicultores, juntamentente com a harmonização dos
métodos analíticos.
Composición de la miel de abejas sin aguijón: estableciendo requisitos de calidad
(Almeida Souza, Bruno; Enríquez, Eunice; Roubik, David; Barth, Ortrud; Heard, Tim Ashley; Carvalho, Carlos; Villas Bôas, Jerônimo Khan; Marchini, Luis Carlos; Locatelli, Jean; Persano Oddo, Livia; Almeida Muradian, Ligia B.; Bogdanov, Stefan y Vit Olivier, Patricia)
Resumen
Se compilaron datos de composición de 152 mieles de abejas sin
aguijón (Meliponini) en estudios realizados desde 1964, y se evaluaron
para proponer requisitos de calidad para este producto. Dado
que la miel de abejas sin aguijón tienen una composición distinta a
la de Apis mellifera, algunos parámetros físico-químicos fueron presentados
según la especie abejas sin aguijón. El origen entomológico
de la miel se asignó a 17 especies de Meliponini de Brasil, una de
Costa Rica, seis de México, 27 de Panamá, una de Surinam, dos
de Trinidad & Tobago, y siete de Venezuela, mayormente del género
Melipona. Los resultados variaron así: humedad (19,9-41,9g/100g),
pH (3,15-4,66), acidez libre (5,9-109,0meq/Kg), cenizas (0,01-
1,18g/100g), actividad de la diastasa (0,9-23,0DN), conductividad
eléctrica (0,49-8,77mS/cm), HMF (0,9-78,4mg/Kg), actividad de la
invertasa (19,8-90,1IU), nitrógeno (14,34-144,00mg/100g), azúcares
reductores (58,0-75,7g/100g) y sacarosa (1,1-4,8g/100g), El contenido
de humedad de las mieles de abejas sin aguijón es generalmente
superior al máximo de 20% establecido para la miel de A. mellifera.
Las directrices ofrecidas pueden ayudar a la expansión consistente
de la base de datos físico-químicos de miel de abejas sin aguijón,
para establecer sus requisitos de calidad en un futuro. El análisis
de polen debería dirigirse hacia el reconocimiento de las mieles uniflorales
producidas por las abejas sin aguijón, a fin de obtener productos
estandarizados según las especies botánicas. Se necesita una
campaña de control de calidad de miel tanto para los recolectores
de miel de abejas sin aguijón como para los meliponicultores, junto
con la armonización de los métodos analíticos.
Artículo publicado en Interciencia. Revista de Ciencia y Tecnología de América. Vol. 31, Nº. 12, p. 867-875, [email protected][email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected] monográfic