scholarly journals DETERMINAÇÃO DE UMIDADE, FIBRAS, LIPÍDIOS, CINZAS E SÍLICA EM PLANTAS MEDICINAIS

Author(s):  
MARIA MOZARINA BESERRA ALMEIDA ◽  
MARIA DE FÁTIMA G. LOPES ◽  
PAULO HENRIQUE MACHADO DE SOUSA ◽  
CÉLIA MARIA D. NOGUEIRA ◽  
CARLOS EMANUEL DE CARVALHO MAGALHÃES

Considerando a importância do estudo das plantas medicinais foram realizadas análises físico-químicas de folhas de dez amostras de Alecrim-pimenta (Lippia sidoides Cham.), Alfavaca ( Ocimum gratissimum L.), Cajá-umbu ( Spondias aff . tuberosa), Eucalipto ( Eucalyptus tereticornis Smith), Goiabeira ( Psidium guajava L.), Maracujá (Passiflora edulis Sims.), Mostarda (Brassica integrigolia O. E. Schulz), Quebra-pedra ( Phyllanthus amorus Schum. Et Thorn.), Sabugueiro ( Sambucus australis Cham. & Schlecht.) e Torém ( Cecropia sp.). Constatou-se pouca discrepância entre os teores de cinzas totais e fibra bruta dos vegetais estudados. Apenas a Alfavaca e o Maracujá destacaramse pelas maiores concentrações de cinzas totais, evidenciando a riqueza dessas amostras em elementos minerais. Com relação à fibra bruta deve-se salientar os elevados teores encontrados para Quebra-pedra e Torém, sugerindo-se estudos para utilização dessas plantas como fonte alternativa de fibra na dieta alimentar. Verificou-se sensível variação nos resultados da determinação da gordura, destacando-se os menores percentuais para Alecrim-pimenta e Goiabeira, importante fator a considerar quando ao uso medicinal desses vegetais. AbstractDETERMINATION OF MOISTURE, FIBERS, LIPIDS, ASHES AND SILICA IN MEDICINAL PLANTS Considering the importance of medicinal plants study, physical-chemical analyses of the leaves were accomplished in ten samples of Lippia sidoides Cham., Ocimum gratissimum L., Spondias aff . tuberosa, Eucalyptus tereticornis Smith, Psidium guajava L., Passiflora edulis Sims., Brassica integrigolia O. E. Schulz, Phyllanthus amorus Schum. Et Thorn., Sambucus australis Cham. & Schlecht. and Cecropia sp. Amongst all studied vegetables, it was verified that the levels of total ashes and gross fiber showed only a small discrepancy. Only Ocimum gratissimum L. and Passiflora edulis Sims. showed remarkable concentrations of whole ash, which suggests high levels of mineral elements presented in those samples. With regards to gross fiber, it should be pointed out high levels found in Phyllanthus amorus Schum. Et Thorn., and Cecropia sp., further investigations are recommended for the use of such plants as alternative source of fiber in the daily diet. A sensitive variation of the results of fat determination was observed, revealing its lowest content in Lippia sidoides Cham. and Psidium guajava L., which is an important aspect when medicinal use of those vegetables are taken into account.

2019 ◽  
Vol 24 (1) ◽  
pp. 42-52 ◽  
Author(s):  
Ana Cecilia Romero-Ramirez ◽  
Maira Alejandra Salazar-Cerón ◽  
Javier Orlando Orduz-Rodriguez

La fruticultura es la principal actividad agrícola de la región del Ariari en el departamento del Meta. Los cultivos de guayaba (Psidium guajava L.) y maracuyá (Passiflora edulis Sims) se establecieron en la década de 1990 y actualmente se siembran cerca de 2000 hectáreas de cada cultivo. Con el fin de conocer los principales problemas fitosanitarios y las prácticas de manejo utilizadas por los productores se realizó un estudio con una encuesta a 40 productores de guayaba y a 43 de maracuyá en tres municipios del Meta (Granada, Lejanías y Villavicencio). La información recolectada se socializó con las comunidades y los resultados se validaron en talleres grupales. Los productores no tienen apoyo de servicios de asistencia técnica ni de extensión agrícola. No se tienen criterios técnicos para los niveles críticos para el control de plagas y enfermedades, ni de los productos ni dosis para su control; además de utilizar productos no recomendados para estos cultivos ni para los problemas fitosanitarios. Estos métodos de manejo elevan los costos de producción y las frutas pueden presentar problemas con los residuos químicos. Se requiere la implementación de capacitación de los productores y la evaluación de control biológico de plagas y de prácticas de agricultura limpia y el acompañamiento de programas de extensión especializado en fruticultura   


2019 ◽  
Vol 20 (12) ◽  
pp. 1227-1243
Author(s):  
Hina Qamar ◽  
Sumbul Rehman ◽  
D.K. Chauhan

Cancer is the second leading cause of morbidity and mortality worldwide. Although chemotherapy and radiotherapy enhance the survival rate of cancerous patients but they have several acute toxic effects. Therefore, there is a need to search for new anticancer agents having better efficacy and lesser side effects. In this regard, herbal treatment is found to be a safe method for treating and preventing cancer. Here, an attempt has been made to screen some less explored medicinal plants like Ammania baccifera, Asclepias curassavica, Azadarichta indica, Butea monosperma, Croton tiglium, Hedera nepalensis, Jatropha curcas, Momordica charantia, Moringa oleifera, Psidium guajava, etc. having potent anticancer activity with minimum cytotoxic value (IC50 >3μM) and lesser or negligible toxicity. They are rich in active phytochemicals with a wide range of drug targets. In this study, these medicinal plants were evaluated for dose-dependent cytotoxicological studies via in vitro MTT assay and in vivo tumor models along with some more plants which are reported to have IC50 value in the range of 0.019-0.528 mg/ml. The findings indicate that these plants inhibit tumor growth by their antiproliferative, pro-apoptotic, anti-metastatic and anti-angiogenic molecular targets. They are widely used because of their easy availability, affordable price and having no or sometimes minimal side effects. This review provides a baseline for the discovery of anticancer drugs from medicinal plants having minimum cytotoxic value with minimal side effects and establishment of their analogues for the welfare of mankind.


2019 ◽  
Vol 13 ((03) 2019) ◽  
pp. 465-471 ◽  
Author(s):  
Edilândia Farias Dantas ◽  
Ana Dolores Santiago de Freitas ◽  
Maria do Carmo Catanho Pereira de Lyra ◽  
Carolina Etienne de Rosália e Silva Santos ◽  
Stella Jorge de Carvalho Neta ◽  
...  

Green manures can replace or supplement mineral fertilization and add organic matter to the soils, ensuring greater sustainability to fruit growing in semiarid regions. Biological fixation, transfer and balance of nitrogen were determined on an irrigated yellow passion fruit orchard (Passiflora edulis Sims) intercropped separately with three cover crops: sunn hemp, Crotalaria juncea (L.); pigeon pea, Cajanus cajan (L.) Mill; and jack bean, Canavalia ensiformis (L.) DC. In a fourth treatment, legumes were not planted, but spontaneous vegetation was left to grow freely. The legumes were croped for 90 days in three lines (0.5 m apart) inside the passion fruit plant lines (2.5 m apart). Fixation and transfers were determined by the 15N natural abundance technique, using sunflower as a reference plant. The three planted legumes nodulated abundantly and fixed nitrogen in high proportions (between 50 and 90% of their N), forming symbiosis with bacteria naturally established in the soil. Jack bean produced more biomass than sunn hemp and pigeon pea, and as much as the spontaneous plants, of which 23% were legumes. The amounts of fixed N (150, 43, 30 and 29 kg ha-1) were determined mainly by the biomass of legumes. More than 40% of the N of passion fruit plants came from the biological nitrogen fixation of the intercropped jack bean, which provided an amount of N higher than that exported in the fruits, generating a positive balance of more than 100 kg ha-1. Therefore, it is recommended to intercrop jack bean in irrigated passion fruit orchards.


2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Akinyinka O. Alabi ◽  
Abayomi M. Ajayi ◽  
Osarume Omorogbe ◽  
Solomon Umukoro

Abstract Background To investigate the antinociceptive and anti-inflammatory activities of aqueous extract of a blended mixture of dried leaves of Ocimum gratissimum and Psidium guajava, a traditional analgesic drug polyherbal (TADP) used as a remedy for pain-related conditions. Methods Antinociceptive activity of TADP (100, 200 and 400 mg/kg) was evaluated in the hot plate test and acetic acid-induced nociception in mice while the anti-inflammatory was evaluated in carrageenan-induced paw oedema in rats. Levels of nitrite, myeloperoxidase, glutathione and malondialdehyde were assayed in carrageenan-induced paw tissue. Results TADP (200 and 400 mg/kg) significantly prolong the latency time in the hot-plate test. TADP (100–400 mg/kg) produced a dose-dependent significant inhibition of the acetic-acid induced abdominal constriction. The antinociceptive activity of TADP in the presence of naloxone and atropine was not reversed whereas yohimbine and glibenclamide significantly reversed it. TADP (100, 200 and 400 mg/kg) significantly reduced the swelling in the carrageenan-induced oedema model and also produced a reduction in the nitrite and myeloperoxidase level. TADP (400 mg/kg) significantly reduced malondialdehyde concentration and increase glutathione level in the carrageenan-induced rat paw. TADP significantly decrease the number of cellular infiltrates in the histopathological assessment. Conclusion These results indicate that polyherbal product containing blended leaves of Ocimum gratissimum and Psidium guajava possess antinociceptive and anti-inflammatory properties, hence represents a promising alternative remedy in inflammation-induced pain.


2017 ◽  
Vol 32 (19) ◽  
pp. 2312-2318 ◽  
Author(s):  
Yue Hu ◽  
Lin Jiao ◽  
Min-Hong Jiang ◽  
Sheng Yin ◽  
Pan Dong ◽  
...  

Biotemas ◽  
2018 ◽  
Vol 31 (3) ◽  
pp. 15-23
Author(s):  
Kamilla Pacheco Govêa ◽  
Antônio Rodrigues Cunha Neto ◽  
Natália Martins Resck ◽  
Letícia Leite Moreira ◽  
Valdir Veroneze Júnior ◽  
...  

O alagamento no solo é um fenômeno que reduz a sobrevivência, o crescimento e o desenvolvimento de plantas, podendo ocasionar queda na produtividade quando essas são agricultáveis. O maracujazeiro (Passiflora edulis Sims) é uma frutífera comercial com propriedades medicinais cuja produção incentiva a irrigação; e não são encontrados estudos que apresentem efeitos do excesso de água no solo sobre estas plantas. O objetivo deste trabalho foi verificar alterações morfoanatômicas e fisiológicas no desenvolvimento inicial de plântulas de maracujazeiro expostas a diferentes níveis de água no solo. As plântulas foram organizadas em três tratamentos: solo com capacidade de campo, pré-submergido e alagado. Após sete dias, foram feitas análises de trocas gasosas, potencial hídrico, quantificação de prolina e cortes anatômicos de raízes. O solo alagado influencia as trocas gasosas e afeta negativamente a fotossíntese. Não houve alterações no potencial hídrico nem na quantificação de prolina entre os tratamentos. Os tratamentos pré-submergido e alagado apresentaram aerênquima e aumento no diâmetro das raízes e na espessura das barreiras apoplásticas e do córtex. O maracujazeiro apresentou alterações fisiológicas e anatômicas que permitiram sua sobrevivência em condições pré-submergidas e alagadas, o que significa que plântulas jovens dessa espécie suportam maiores quantidades de água no solo.


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