Botanical Composition
Mostrando 1-12 de 65 artigos, teses e dissertações.
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1. METABOLIC PROFILING AND CYTOTOXIC ACTIVITY OF METHANOL EXTRACTS FROM CHAMAECRISTA DUCKEANA (P. BEZERRA & A. FERN.) H. S. IRWIN & BARNEBY (LEGUMINOSAE, CAESALPINIOIDEAE)
The genus Chamaecrista comprises more than 330 species, with only a few studies on their chemical composition and biologic activities. In this study, the phytochemical profile of leaf, stems, and fruits extracts of the C. duckeana were examined by UPLC ESI HRMS analysis to determine possibly bioactive constituents. The antioxidant activity was carried out th
Química Nova. Publicado em: 2022
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2. Honey sample collection methods influence pollen composition in determining true nectar-foraging bee plants
ABSTRACT This study investigated the suitability of honey sample collection methods for determining the botanical origin of honey through palynological analysis. We used three methods to collect honey samples in three different modes viz. extracted honey using a honey extractor, squeezed honey and pipetted honey (collected by micropipette/dropper from honey
Acta Bot. Bras.. Publicado em: 2020-09
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3. Resorcinolic Lipids from Yucatecan Propolis
Propolis is a material produced by bees from a combination of plant exudates and wax, used to fill out cracks in the beehive and to defend against intruders and pathogenic microorganisms; it is recognized for its many biological activities and its chemical composition depends on the botanical sources close to the beehive. The objective of this investigation
J. Braz. Chem. Soc.. Publicado em: 2020-01
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4. Influência de povoamento de Pinus taeda sobre o banco de sementes na região de Floresta Ombrófila Mista
Resumo Este estudo teve o objetivo de avaliar o efeito de um povoamento de Pinus taeda sobre a composição florística e estrutura do banco de sementes de um remanescente de Floresta Ombrófila Mista (FOM). Para tanto foram coletadas 160 amostras do banco de sementes, 80 de um remanescente de FOM e 80 em um povoamento de P. taeda. As amostras foram colocada
Rodriguésia. Publicado em: 20/12/2019
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5. A floresta é o domus: a importância das evidências arqueobotânicas e arqueológicas das ocupações humanas amazônicas na transição Pleistoceno/Holoceno
Resumo Este artigo discute o papel que as antigas ocupações exerceram na constituição do que se considera como floresta amazônica, tendo como base dados arqueológicos e arqueobotânicos da transição Pleistoceno/Holoceno e partindo das relações entre humanos e ambientes (destacando eixos de heterogeneidade). A ocupação de lugares estratégicos da
Bol. Mus. Para. Emílio Goeldi. Ciênc. hum.. Publicado em: 26/08/2019
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6. Fitossociologia de um fragmento de restinga herbáceo-subarbustiva no sul do Estado de Santa Catarina, Brasil
RESUMO A vegetação de restinga é uma formação típica de ecossistemas costeiros de alta relevância ecológica. Dessa forma, o objetivo do estudo foi descrever a composição florística e estrutural de um fragmento de restinga herbáceo-subarbustiva localizada em Balneário Esplanada, no município de Jaguaruna, sul do Estado de Santa Catarina. Foram i
Hoehnea. Publicado em: 04/07/2019
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7. Canopy structure and forage nutritive value of elephantgrass subjected to different stocking rate and N fertilization in the “Mata Seca” ecoregion of Pernambuco
ABSTRACT The objective was to evaluate the effect of three stocking rates (2, 3.9, and 5.8 animal units ha−1) and three fertilization levels (0, 150, and 300 kg N ha−1 yr−1) on herbage mass and nutritive value of elephantgrass (Pennisetum purpureum Schum.) cv. IRI-381. The experiment was conducted from May to August of 2009 and 2010 in Itambé, PE, Bra
R. Bras. Zootec.. Publicado em: 25/04/2019
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8. Riparian vegetation structure and soil variables in Pandeiros river, Brazil
Resumo Este estudo analisou as variações florísticas, estruturais e suas relações com variáveis do solo em dois trechos de vegetação ripária em uma região ecotonal entre savana e zonas semi-áridas. Propomos a hipótese de que, apesar da proximidade entre as áreas amostradas, as condições do solo são distintas e levam a mudanças na estrutura e
Rodriguésia. Publicado em: 18/03/2019
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9. Phenolic Composition and Leishmanicidal Activity of Red Propolis and Dalbergia ecastaphyllum (L.) Taub (Fabaceae) Extracts from Sergipe, Brazil
ABSTRACT Leishmaniasis is a parasitic disease caused by protozoa of the Leishmania genus. It may manifest in visceral and tegumentary forms, and pentavalent antimonials are the first choice drugs used for the treatment. Frequently these drugs show low efficiency and high toxicity to mammalian host. The present study describes the chemical profile and the in
Braz. arch. biol. technol.. Publicado em: 06/08/2018
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10. Harvesting Season and Botanical Origin Interferes in Production and Nutritional Composition of Bee Pollen
ABSTRACT We aimed to evaluate the frequency of bee pollen production, its botanical origin and chemical composition when collected in different seasons. Our results indicate that higher proteins (22.80 ± 3.09%) and flavonoids (2789.87 ± 1396.00 μg 100g-1) levels were obtained in the winter season, which also showed greater pollen production (134.50 ± 35.
An. Acad. Bras. Ciênc.. Publicado em: 01/02/2018
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11. Anatomical characterization of ultra-structures, biominerals and histolocalization of metabolites in leaves of Genipa americana
Abstract Inserted in one of the largest families among the Angiosperms, Genipa americana L., Rubiaceae, can be found in all Brazilian territory, presenting great medicinal importance, where several uses have been attributed. In view of this, this work has the purpose of analyzing the ultrastructural, biomineral, phytochemical and histochemical characteristic
Rev. bras. farmacogn.. Publicado em: 2017-10
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12. PRODUCTIVITY AND NUTRITIVE VALUE OF TIFTON 85 IN SUMMER, WITH AND WITHOUT IRRIGATION UNDER DIFFERENT NITROGEN DOSES
ABSTRACT The pasture irrigation has expanded, mostly in small areas in order to boost the production system, along with the use of soil improvement techniques and high-productivity grasses. Thus, this study, carried out on a small dairy farm property, aimed to evaluate the productivity, botanical composition and nutritive value of Tifton 85 with different ni
Eng. Agríc.. Publicado em: 2017-04