Patricia Vit

Patricia Vit
University of the Andes (Venezuela) | ULA · Foood Science

Retired Professor

About

130
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Publications

Publications (130)
Preprint
The biodiversity of Ecuadorian stingless bees is almost 200 species. Traditional pot-honey harvest in Ecuador is mostly done from nests of the three genera selected here Geotrigona Moure, 1942, Melipona , Illiger, 1806 and Scaptotrigona , Moure 1943. The 20 pot-honey samples collected from cerumen pots and three ethnic honeys “abeja de tierra”, “be...
Book
This book covers pot-pollen-the other product, besides honey, stored in cerumen pots by Meliponini. Critical assessment is given of stingless bee and pot-pollen biodiversity in the Americas, Africa, Asia and Oceania. Topics addressed include historical biogeography, cultural knowledge, bee foraging behavior, pollination, ecological interactions, he...
Article
Full-text available
Pastaza is the largest and least populated province in Ecuador, with seven native indigenous nationalities. The Kichwas from the Rio Chico community live near to the capital city Puyo, are recognized for their knowledge on stingless honey bees. From the 400 species of Neotropical Meliponini that make honey in cerumen pots, almost 100 thrive in Sout...
Article
Full-text available
En Ecuador la megabiodiversidad está presente también en las mieles producidas en potes de cerumen, las cuales no están incluidas en las normas técnicas de calidad del Instituto Ecuatoriano de Normalización NET INEN 1572. Las normas de miel sólo se refieren a la miel producida por la abeja comercial Apis mellifera. “Angelita” es el nombre étnico de...
Article
Full-text available
The chemical composition and bioactivity indicators (flavonoids, polyphenols, and antioxidant activity) of bee pollen produced by two Meliponini bee genera (Melipona and Scaptotrigona) in Paria Grande, Amazonas state, Venezuela, were compared. Proximal analyses were performed in triplicate following standard methods. Moisture, ash, and crude fat we...
Article
Full-text available
Ecuadorian stingless bees (Apidae, Meliponini) have ethnomedicinal interest because their products are used in healing. Diverse remedies consist on pot-honey alone or mixed with infusions. This set of medicinal uses were informed in El Oro province by Ecuadorian stingless bee keepers -known as meliponicultors-in Latin America: Bruises, tumors, ocul...
Article
RationaleTetragonula carbonaria pot-honeys are highly valued as a food source and for their biological activities in Australia, and there is a growing interest to know its composition. Phenolic metabolites, which could be related to their beneficial properties, have not been studied in depth yet.Methods Mass spectrometry (MS) coupled to liquid chro...
Article
Full-text available
Interest to develop new anticancer drugs and to design combination treatments with little or no secondary effects provides new scope for traditional phytochemicals in chemoprevention and therapy. Propolis is a known source of polyphenols, and flavonoids found in them have been widely studied as biochemical markers for botanical origin and in exp...
Article
Full-text available
International honey standards are specified in a European Honey Directive and in the Codex Alimentarius Standard for Honey, both of which are presently under revision. In this article, present knowledge on the different quality criteria is reviewed. The standard drafts include standards and methods for the determination of the following quality fac...
Article
Full-text available
A total of 16 geopropolis samples from Brazil, Bolivia and Venezuela were analysed in the present study. Samples were submitted to the standard procedure used to obtain pollen grains and additional structured elements. At least 300 pollen grains per sample were counted; five samples did not reach 300 grains. The pollen types of Brazilian samples di...
Chapter
Full-text available
The present study aims to review palynological analysis of geopropolis and propolis obtained from stingless bees in South America. Such studies are scarce and most analyzed samples are from Brazil, with a few from Bolivia and Venezuela. High diversity in pollen types, along with plant tissue fragments, hyphae, fungal spores, and amorphous organic m...
Article
Full-text available
El análisis polínico de las mieles proporciona información sobre las preferencias de las abejas y permiten determinar su origen botánico y geográfico. Por esta razón, el polen apícola por ser el segundo producto más consumido proveniente de la colmena, puede contener oligoelementos cuyas cantidades varían de una planta a otra, permitiéndole actuar...
Article
Soursop Annona muricata L. is a tropical fruit of current interest for its medicinal properties. The compared proximal composition and antioxidant activity of the pulp, fresh and dried leaves, and seeds of soursop were compared. The highest contents of protein (14.77g/100g) and fat (25.75g/100g) were found in seeds. The pulp showed the highest mois...
Article
Full-text available
Apis mellifera bees obtain propolis by adding wax and salivary secretions to resinous, gummy or balsamic materials collected from various plant sources. Its chemical composition depends on many factors (type of bee, flora accessed, environment, management, season, vegetation and geographical area of collection). In the hive, the bees use propolis t...
Chapter
Full-text available
There is abundant information about the antioxidant activity of honey, pollen and propolis, but antioxidant activity of stingless bee nest products is less well known. In this work in vitro total antioxidant activity (TAA), flavonoid and polyphenol contents of ethanolic extracts of Tetragonisca angustula nest products were assessed. The highest TAA...
Chapter
Full-text available
Information obtained from traditional use and scientific studies can help establish the value of honey in cancer treatment. Animal models and clinical trials with honey administered alone or in combination with other natural products or targeted therapy, are often difficult to interpret because honey contains major sugary and watery plant component...
Book
The stingless bees are one of the most diverse, attractive, fascinating, conspicuous and useful of all the insect groups of the tropical world. This is a formidable and contentious claim but I believe it can be backed up. They are fifty times more species rich than the honey bees, the other tribe of highly eusocial bees. They are ubiquitous in the...
Data
Full-text available
Honey components (sugars, aminoacids, lactic acid) may behave as humectants and also enhance humectant properties in a formulation. Active principles of functional properties in honey vary according to visited flora, type of bee and localities where honey is produced. Studies of honey in dermo-cosmetic applications are scarce. In this work we revie...
Chapter
Full-text available
Sensory analysis uses the five human senses to evaluate products like stingless bee pot honey. The sensory characteristics of pot honey are presented and discussed, and comparisons between honeys produced by the bees in combs or in pots are considered, as well as the sensory evaluation of fermented honey. Sensory results based on descriptive techni...
Chapter
A meliponiculture project in Amboró National Park, Southeast Bolivia, uses six species of stingless bees: “erereú choca” Melipona brachychaeta, “erereú barcina” Melipona grandis, “obobosí” Scaptotrigona depilis, “suro negro” Scaptotrigona polysticta, “suro choco” Scaptotrigona near to xanthotricha, and “señorita” Tetragonisca fiebrigi. The annual y...
Chapter
The stingless bee Melipona favosa lives in the plains and coastal areas of Venezuela. It is a gentle bee known locally as “erica” and “maba.” This bee commonly nests in trees, walls, fence posts, and is kept in hives by traditional stingless beekeepers. Its honey can ferment inside sealed storage pots of the nest. Therefore, the sensory attribute f...
Article
Full-text available
Bee pollen has been reported to show antioxidant and radical scavenging activities; contributing to anti-inflammatory and gastroprotective properties. Venezuelan honeybee pollen has been little studied, but is consumed because its properties are known from other countries reports. On the basis of these reports, water, ethanol and methanol soluble f...
Article
Full-text available
Diverse species of stingless bees produce por honey in Vene-zuela,which is not included in the Venezuelan regulations of honey quality. One of these species , the Melipona favosa, lives in the Paraguaná Peninsula, where it is known as erica or maba. In order to know the honeys of M. favosa, the botanical origin was determined, their physicochemical...
Article
Full-text available
Pot honey is the most abundant honey in the forest, produced by many species of stingless bees (Meliponini) of the Huottuja (Piaroa) community in Paria Grande, Venezuela. However, the commercialization of this honey is low, and false honeys, which are sold in labelled bottles, are easily found in the market. This study has investigated the ability...
Article
Full-text available
Five types of pot honeys produced in Australia, Bolivia, Brazil, Mexico and Venezuela by Melipona, Scaptotrigona and Tetragonula species were described by a Spanish untrained sensory panel. The free-choice profile (FCP) method consents consumers to use their own words to describe and to quantify the sensory attributes of the product: Appearance, od...
Article
The analysis of the phytochemicals present in stingless bee honey samples has been a difficult task due to the small amounts of samples available and to the complexity of the phytochemical composition that often combines flavonoid glycosides and aglycones. Honey samples produced in Venezuela from Melipona species were analyzed using a combination o...
Article
Full-text available
Besides honey, bee pollen is the beehive product best known by the public for nutritional and medicinal purposes. Ten samples of fresh bee pollen loads were collected using pollen traps during ten months from December 2004 to October 2005 in the Páramo of Misintá, Mérida, Venezuela. They were evaluated in the present study using two techniques, one...
Article
Honey is the most popular bee product used by man, with nutritional and medicinal purposes. Its great diversity is attributed to numerous factors (bee type, visited flora, environment, and management). The quality of honey is controlled with routine parameters (free acidity, diastase activity, reducing sugars, ash, water, hydroxymethyfurfural, and...
Article
The entomologist, naturalist and artist João Maria Franco de Camargo was a scientist who studied stingless bees (Me li ponini) with singular interest. The enormous biodiversity of these first bees in the planet, was for him an inexhaus tible mine of inspiration, curiosity and intelectual work. Acade mic lecturer, researcher and privileged drawer. A...
Article
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Resumen. Las normas venezolanas para calidad de miel de abejas elaboradas en el año 1984 sólo se refieren a Apis mellifera L. introducida por los europeos, pero no existen estándares oficiales para la calidad de las mieles precolombinas de abejas sin aguijón (Meliponini). Se comparó la composición físico-química de mieles comerciales y de referenci...
Article
Honeys produced by stingless bees (Meliponini) have a different composition from Apis mellifera honey. However, their standards have not been included in norms of quality for this product of the hive. In this work Venezuelan honeys produced by six species of stingless bees, were studied: Frie - seomelitta paupera (Provancher, 1888), Scaura aff. lat...
Article
Full-text available
Honey produced by ten stingless bee species (Melipona crinita, M. eburnea, M. grandis, M. illota, Nannotrigona melanocera, Partamona epiphytophila, Ptilotrigona lurida, Scaptotrigona polystica, Scaura latitarsis, and Tetragonisca angustula) from Peru has been characterized according to traditional physicochemical standards (color and moisture), bio...
Article
Full-text available
Stingless bee honeys were extracted from 27 nests in the West and South of Venezuela and analysed by HPLC for sugar content. The concentration and ratios of the three frequently occurring sugars, fructose, glucose and maltose, were related to the entomological origin of the samples. The fact that an unusual high maltose content was characteristic f...
Article
Summary Hive samples from seven Venezuelan states were studied to determine the quality of honeys from the naturalized tropical honey bee Apis mellifera, submitted for a national honey competition. The physicochemical composition varied as follows: antibacterial activity as minimal inhibitory concentration for each of S. aureus and E. coli was 25.0...
Article
Full-text available
Tetragonisca fiebrigi Schwarz 1938 es una abeja sin aguijón conocida como yateí en Argentina y Paraguay. Al igual que otras especies de Meliponini, esta abeja nativa produce miel en botijas, con acidez y humedad más elevadas que los requisitos en mieles de Apis mellifera L. Se compararon 16 muestras de miel de T. fiebrigi producidas en la provincia...
Article
Full-text available
The essential oil isolated by hydrodistillation from the aerial parts of Hydrocotyle umbellata L. (Apiaceae) yielded 0.025% of oil which was analyzed by capillary GC-FID and GC/MS. Twenty-one constituents were characterized making up 92.1% of the oil. The major compounds were germacrene D (26.0%), β-sesquiphellandrene (17.5%) and β-bisabolene (16.5...
Article
Tetragonisca f iebrigi Schwarz 1938 is a stingless bee named yateí in Argentina and Paraguay. As well as other Meliponini species, this native bee stores honey in pots with acidity and moisture higher than the Apis mellifera L. honey standards. Sixteen T. fiebrigi honey samples produced in the county of Misiones, Argentina, and Itapuá department, P...
Article
Full-text available
Venezuelan bee pollen has not been characterized, and marketing is not regulated. Pollen is consumed for apitherapeutical purposes for its nutritional and medicinal properties. This product of the hive is the most popular after honey; therefore it is necessary to characterize and to value it to initiate a database to support the proposal of a norm...
Preprint
Honey is a sweet and viscous fluid produced by bees from nectar and honeydew. It is an ancient natural medicine mainly used to treat wounds, ulcers and burns. In this study we have assessed the antibacterial activity against E. coli and S. aureus of nine Venezuelan honeys participating in the national honey contest year 2005, compared with a contro...
Article
Full-text available
Hive samples from seven Venezuelan states were studied to determine the quality of honeys from the naturalized tropical honey bee Apis mellifera, submitted for a national honey competition. The physicochemical composition varied as follows: antibacterial activity as minimal inhibitory concentration for each of S. aureus and E. coli was 25.0-50.0 g/...
Article
Full-text available
Honey is a sweet and viscous fluid produced by bees from nectar and honeydew. It is an ancient natural medicine mainly used to treat wounds, ulcers and burns. In this study we have assessed the antibacterial activity against E. coli and S. aureus of nine Venezuelan honeys participating in the national honey contest year 2005, compared with a contro...
Article
Full-text available
Stingless bees (Tribe Meliponini) are a diverse group of highly eusocial bees distributed throughout the tropics and subtropics. Trigona carbonaria honey, from Australia, was characterized by traditional physicochemical parameters (acidity, sugars, diastase, electrical conductivity, hydroxymethylfurfural, invertase, nitrogen, and water content) and...
Article
El polen apícola venezolano no ha sido caracterizado, y su comercialización no está normalizada. El polen es consumido con fines de apiterapia por sus propiedades nutricionales y medicinales. Este producto de la colmena es el más popular después de la miel de abejas; por eso es necesario caracterizarlo y valorizarlo para iniciar una base de datos q...
Article
Bee pollen is the second product of the comb most consumed, after honey; however, there are no regulations for its quality control in Venezuela. In this work, fresh bee pollen collected in Cacute, Rangel County, Mérida state from Venezuela, was separated manually into fours colors. These pollen grains were observed with the microscope for its botan...
Article
Full-text available
Stingless bee (Meliponini) honey is a bioresource used to treat cataracts in traditional medicine. The anti-cataract activity of twenty flavonoids was explored in an osmotic cataract model, to find a probable link between the putative anti-cataract properties of stingless bee honey eyedrops and their flavonoids. Osmotic cataracts were induced in ov...
Article
Full-text available
La bioactividad de la miel de abejas ha sido aplicada en apiterapia tradicional y moderna. El origen botánico ocasiona variaciones en los principios activos y en el color de este producto, desde incoloro y blanquecino hasta marrón oscuro en la escala ámbar. Se evaluó la actividad antioxidante total (AAT) de 50 mieles enviadas al servicio de Análisi...
Article
The bioactivity of honey has been used in traditional and modern apitherapy. The botanical origin of honey causes variations in this product's active principles and color, from almost colorless whitish to dark brown in the amber scale. The total antioxidant activity (TAA) of 50 honeys sent to the service of Chemical Analysis of the Institute of Api...
Article
Full-text available
Guava (Psidium guajava L.) is a tropical fruit widely relished in the tropics, consumed fresh and processed. In this work, free acidity, pH, ash, nitrogen and water contents were measured, besides the total polyphenol content and the antioxidant capacity of the peel, the shell and the pulp of the fresh fruit and the processed guava pulp and jam. Th...
Article
The use of honey in traditional and complementary/alternative medicine needs evidence to explain the bioactive properties of this product from the hive. The analytical techniques of the Codex Alimentarius Commission for safety and trading quality control purposes, are not sufficient to differentiate this apparently homogeneus but complex bee produc...
Article
Bee pollen is the second product of the comb most consu- med, after honey; however, there are no regulations for its quality control in Venezuela. The oligoelements of pollen have been studied for their nutritional, medicinal or toxic functions, and also, as indicators of environmental pollution by the analysis of heavy metals. In this work, the co...
Article
Full-text available
SUMMARY 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 hon- ey, some physicochemical parameters are presented according to stingless bee species. The ent...