4 results on '"Giarola, Leila Regina"'
Search Results
2. Pterodon pubescens Benth (sucupira) microencapsulation influence on formulation stability outcome compared to non-encapsulated extract
- Author
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Giarola, Leila Regina, primary, Coco, Julia Cedran, additional, Maria de Oliveira Sousa, Ilza, additional, Cefali, Letícia Caramori, additional, Ataide, Janaína Artem, additional, Tavares, Guilherme Diniz, additional, Ferreira Rodrigues, Rodney Alexandre, additional, Foglio, Mary Ann, additional, and Mazzola, Priscila Gava, additional
- Published
- 2021
- Full Text
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3. Exploring the Brazilian biodiversity and folk medicine : development of topical formulation using extract of Pterodon pubescens Benth. (Sucupira)
- Author
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Giarola, Leila Regina, 1983, Mazzola, Priscila Gava, 1979, Foglio, Mary Ann, 1960, Leonardi, Gislaine Ricci, Tavares, Guilherme Diniz, Universidade Estadual de Campinas. Instituto de Biologia, Programa de Pós-Graduação em Biociências e Tecnologia de Produtos Bioativos, and UNIVERSIDADE ESTADUAL DE CAMPINAS
- Subjects
Uso tópico ,Goma do cajueiro ,Formulation ,Formulação ,Pterodon pubescens ,Cashew gum ,Microencapsulation ,Topical use ,Microencapsulação - Abstract
Orientadores: Priscila Gava Mazzola, Mary Ann Foglio Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia Resumo: Plantas medicinais são utilizadas de acordo com a sabedoria popular, inseridas num contexto histórico. Sua utilização no preparo de fitoterápicos apresenta grande importância nos diversos estágios de desenvolvimento da sociedade, sempre fazendo parte da prática farmacêutica o interesse por fitoterápicos é renovado nos dias de hoje. O manejo do material vegetal requer uma série de cuidados, uma das alternativas utilizadas para preservar suas características durante o processamento é a utilização de técnicas de encapsulação, que protegem das condições adversas do meio e prolongam a vida útil do extrato vegetal. A espécie Pterodon pubescens Benth. (Leguminosae), conhecida popularmente como sucupira, é nativa do cerrado brasileiro, utilizada na medicina popular, administrada geralmente através da via oral, tem suas ações anti-proliferativa, anti-inflamatória e analgésica, cientificamente comprovadas. Diante de tais propriedades torna-se interessante a veiculação deste extrato em uma formulação de uso tópico, o que pode resultar em maior facilidade de aplicação, melhor aceitação do paciente, maior adesão ao tratamento e menor risco de efeitos adversos. O objetivo desse trabalho foi o desenvolvimento de uma formulação de uso tópico contendo extrato de Pterodon pubescens Benth., avaliar suas condições de estabilidade e determinar seu prazo de validade. Para isso realizou-se o processo de seleção dos frutos, obtenção do extrato bruto diclorometano e sua caracterização. Parte desse material foi microencapsulado por atomização, utilizando a goma do cajueiro como material de parede. As microcápsulas obtidas foram avaliadas quanto ao rendimento do processo, eficiência de encapsulação, morfologia por Microscopia Eletrônica de Varredura (MEV) e análise de sua distribuição granulométrica. Em seguida, o extrato bruto microencapsulado e o extrato bruto livre foram veiculados em bases semissólidas, emulsões e géis, os produtos obtidos foram avaliados em teste de estabilidade de 180 dias. A base de gel de Carbopol contendo 2,5% de extrato bruto livre foi a formulação que apresentou melhores resultados. As formulações semissólidas contendo o extrato microencapsulado se mostraram instáveis, contudo, as microcápsulas obtidas foram avaliadas em modelo experimental de úlcera induzida por etanol e apresentaram atividade anti-ulcerogênica, indicando, portanto, a possibilidade de serem veiculadas em formas farmacêuticas de uso oral. Deste modo sugere-se que a formulação desenvolvida pode ser utilizada como base para o desenvolvimento de um produto fitoterápico inovador Abstract: Medicinal plants are used according to popular wisdom, inserted in a historical context. Its use, in the herbal medicines preparation is quite important in various society development stages, it has always been part of the pharmaceutical practice and today the interest in medicinal plants is renewed. Handling the plant material requires a lot of care and one of the alternatives used to preserve their characteristics during all processing steps is the use of encapsulation techniques, which protects from adverse environmental conditions and prolong its shelf life. The species Pterodon pubescens Benth. (Leguminosae), commonly known as sucupira, is native to the Brazilian cerrado and is used in folk medicine and generally administered through the oral route, with its anti-proliferative, anti-inflammatory and analgesic actions scientifically proven. Given such properties the use of this extract in a topical formulation becomes interesting, which can result in easier application, better patient compliance and smaller risk of adverse effects. The aim of this study was the development of a topical formulation containing Pterodon pubescens extract, and to evaluate of their stability conditions and to determine its shelf life. For that, the fruit selection process, crude extract dichloromethane production and its characterization were done. Part of this material has been microencapsulated by spray-drying using cashew gum as wall material. Microcapsules obtained were evaluated for process yield, encapsulation efficiency, morphology by Scanning Electron Microscopy (SEM) and analysis of its particle size distribution. Then the crude extract microencapsulated and free crude extract were used on semisolid bases, emulsions and gels, and the obtained products were evaluated in 180-day stability study. The Carbopol-based gel containing 2.5% free crude extract was the formulation that showed the best results. The semisolid formulations containing microencapsulated extract were unstable. However, the obtained microcapsules were evaluated in an experimental ulcers model induced by ethanol and showed anti-ulcerogenic activity, thus indicating the possibility of being applied in pharmaceutical forms for oral use. Thus the developed formulation can be used as a basis for an innovative herbal medicine development Mestrado Fármacos, Medicamentos e Insumos para Saúde Mestra em Ciências FAPESP 2013/06384-5 CNPQ CAPES
- Published
- 2015
4. Pterodon pubescensBenth (sucupira) microencapsulation influence on formulation stability outcome compared to non-encapsulated extract
- Author
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Giarola, Leila Regina, Coco, Julia Cedran, Maria de Oliveira Sousa, Ilza, Cefali, Letícia Caramori, Ataide, Janaína Artem, Tavares, Guilherme Diniz, Ferreira Rodrigues, Rodney Alexandre, Foglio, Mary Ann, and Mazzola, Priscila Gava
- Abstract
Pterodon pubescensBenth is a Brazilian native species, used in folk medicine for chronic pain relief. The anti-inflammatory, antinociceptive, and antiproliferative activities attributed to the species have a straight relationship with vouacapans (furanditerpenes) and geranylgeraniol (acyclic diterpenes), identified in P. pubescensextracts. Nevertheless, scarce reports are found on product development and stability studies containing this species. This gap prompted the stability outcome evaluation of carbomer-940 gel-based formulations containing P. pubescensmicroencapsulated extract compared to non-encapsulated extract reported herein. Seeds were extracted with dichloromethane providing 46.6% (w/w) crude extract yield. Phytochemical markers were monitored by High Pressure Liquid Chromatography with Diode Array Detector (HPLC-DAD) and Gas Chromatography coupled to Mass Detection (GC-MS) using the vouacapans 1:1 ratio isomers 6α-hydroxy-7β-acetoxy-vouacapan-17β-oate methyl ester and 6α-acetoxy-7β-hydroxy-vouacapan-17β-oate methyl ester for quantification and identification purposes. Spray-dried microcapsules were produced with cashew gum as wall material with structure confirmed by scanning electron microscopy (SEM) and size distribution by light scattering parameters. The particles presented a bimodal size distribution ranging from 0.2 to 500 μm, vouacapans content and encapsulation efficiency of 55.6% and 44.4% respectively, with an overall spray-drying yield of 82.6% (w/w). The formulation containing microencapsulated extract did not achieve an acceptable outcome under test condition, with further studies needed for optimization. Nevertheless, the gel containing 2.5% (w/v) of non-encapsulated extract stored at 25 °C protected from light presented the best results within 180 days in stability study. P. pubescensincorporation maintained rheological properties with better performance when exposed to light during storage time compared to the gel base formulation. The formulation delivered vouacapans throughout a synthetic membrane. This formulation is the first step to achieve a novel topical gel-based product containing P. pubescensbeneficial activities.
- Published
- 2021
- Full Text
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