Levantamento etnobotânico das plantas medicinais utilizadas pela comunidade de Inhamã, Pernambuco, Nordeste do Brasil / An ethnobotanical survey of medicinal plants used by the rural community of Inhamã, state of Pernambuco, Northeastern Brazil

Avaliou-se o conhecimento, uso, obtenção e indicação terapêutica de plantas utilizadas pela comunidade rural de Inhamã, situada no município de Abreu e Lima, PE, Brasil. Foram realizadas entrevistas semi-estruturadas com 75 moradores. Foram citadas 155 espécies, distribuídas em 112 gêneros e 59 famílias. Conforme a indicação terapêutica, as espécies foram agrupadas em sistemas corporais reconhecidos pela Organização Mundial de Saúde e o índice de importância relativa (IR) foi calculado para cada espécie. Destacaram-se pelo número de espécies, as famílias: Asteraceae, Fabaceae e Lamiaceae. As doenças mais citadas estiveram relacionadas aos sistemas respiratório e gastrointestinal. Ocimum gratissimum, alfavaca, apresentou o maior valor de IR (2,0), seguido por Lippia alba, erva cidreira (1,6), Mentha villosa, hortelã pequena (1,6) e Musa paradisiaca, banana (1,5), indicadas para tratamento de transtornos dos sistemas respiratório, digestório e nervoso. Apenas 11% das espécies citadas tiveram prescrições médicas. Inhamã diferencia-se de outras comunidades próximas a centros urbanos porque os moradores cultivam a maioria das espécies medicinais que consomem.

This study evaluated the extent of knowledge and use and the acquisition of medicinal plants in the rural community of Inhamã, located in the municipality of Abreu e Lima in the state of Pernambuco, Brazil. Medical indications for medicinal plants in this community were also characterized. We conducted semi-structured interviews with 75 community residents. A total of 155 plant species were reported, distributed among 112 genera and 59 families. Species were grouped by body system benefitted according to the code established by the World Health Organization, and relative importance (RI) was calculated for each species. The most represented families were Asteraceae, Fabaceae, and Lamiaceae. The majority of the disease symptoms reported was related to the respiratory and gastrointestinal systems. The Ocimum gratissimum, clove basil, presented the greatest RI value (2.0), followed by Lippia alba, bushy lippia (1.6), Mentha villosa, mint (1.6), and Musa paradisiaca, banana (1.5), all of which are used to treat ailments of the respiratory, gastrointestinal and nervous systems. Of the species reported, only 11% have medical indications. Inhamã differs from other communities located near urban centers, as the local residents cultivate the majority of the medicinal plants they use.

Levantamento etnobotânico de plantas medicinais em área de caatinga no município de São José de Espinharas, Paraíba, Brasil / Ethnobotanical survey of medicinal plants in a caatinga area in São José de Espinharas Municipality, Paraíba State, Brazil

Este trabalho teve como objetivo realizar levantamento das plantas medicinais utilizadas pela comunidade de São José de Espinharas, a fim de registrar e preservar o conhecimento popular. A metodologia usada foi de entrevistas semi-estruturadas, com observações participantes, coleta e identificação do material botânico e preparação de exsicatas, resultando em lista de 82 espécies de 38 famílias diferentes. São fornecidas as informações nomenclatura popular e botânica, uso terapêutico, parte utilizada, forma de uso, modo de preparo e doenças tratadas. As raízes (30 por cento) foram ás partes mais utilizadas e a forma de preparo foi lambedor (32 por cento). O conhecimento sobre os usos e modos de preparo provém em geral, dos familiares (85 por cento). Com esses resultados, verifica-se a interação da população local com a flora e utilização relacionada a aspectos sociais, econômicos, culturais e às mudanças ambientais.

The aim of this study was to perform a survey of medicinal plants used by the community of São José de Espinharas, Paraíba State, Brazil, in order to record and preserve the folk knowledge. The adopted methodology was based on semi-structured interviews, with participating observations, botanical material collection and identification, and voucher preparation, resulting in a list of 82 species of 38 different families. The following information was provided: folk and botanical nomenclature, therapeutic application, used plant part, forms of use, method of preparation and treated diseases. Roots (30 percent) constituted the part most frequently used and syrup (32 percent) was the predominant method of preparation. The knowledge of uses and methods of preparation are generally handed down in the family (85 percent). Based on those results, there is an interaction of the local population with the flora and its use is related to social, economical and cultural aspects and environmental changes.

Intra- and interspecific variation of cuticular hydrocarbon composition in two Ectatomma species (Hymenoptera: Formicidae) based on Fourier transform infrared photoacoustic spectroscopy

We have been able to discriminate different castes and sexes of ants in the same colony by measuring cuticular hydrocarbon levels with Fourier transform infrared photoacoustic spectroscopy, compared by canonical discriminant function analysis. We have now applied this methodology to various colonies of two species of ants of the genus Ectatomma in the Brazilian Cerrado. There were clear interspecific differences in cuticular hydrocarbons of these ants, with a small intraspecific variation. The differences between colonies were greater in E. brunneum than in E. vizottoi. Genetic differences among the colonies and species were well estimated by Fourier transform infrared photoacoustic spectroscopy and statistical analyses.

Comparative study of the cuticular hydrocarbon in queens, workers and males of Ectatomma vizottoi (Hymenoptera, Formicidae) by Fourier transform-infrared photoacoustic spectroscopy

Fourier transform-infrared photoacoustic spectroscopy was applied for the first time, to our knowledge, to distinguish different castes of an ant species. The method was applied directly to the abdomen of queens, workers and males of Ectatomma vizottoi ants, without any special sample preparation. The absorption bands of secondary amide and hydrocarbons were identified; using these as variables in a canonical discriminant analysis we found significant differences between the castes. Queens have a greater hydrocarbon content than do workers and males, which is related to their function in the colony. This technique can be used to analyze and distinguish small chemical differences in biological systems, even in opaque samples.