dodonaea viscosa
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2022 ◽  
Vol 7 (1) ◽  
pp. 61
Author(s):  
Rodrigo Otávio Schneider Souza ◽  
Laura Hoffmann de Oliveira ◽  
Luciane Gorski ◽  
Guilherme Valcorte ◽  
Roberta Rodrigues Roubuste ◽  
...  
Keyword(s):  

O uso da madeira de espécies nativas pode ser visto como alternativa de renda para produtores rurais, no entanto ainda existe uma grande lacuna a ser preenchida pelas instituições de pesquisa a respeito das características dessa a fim de embasar sua utilização. Neste sentido, o presente estudo objetivou caracterizar as propriedades físico-mecânicas da madeira de Dodonaea viscosa Jacq. Para tanto, foram utilizadas neste estudo exemplares da espécie Dodanaea viscosa, conhecida popularmente como faxina vermelha ou vassoura-vermelha, com aproximadamente quinze anos de idade. Os corpos de prova foram confeccionados seguindo as dimensões descritas nas respectivas normas de cada ensaio. Após a confecção, os mesmos foram acondicionados em câmara climatizada a uma temperatura de 20°C e 65% de umidade relativa, onde permaneceram até atingirem umidade de equilíbrio de 12%.  Posteriormente, foram avaliados: massa específica aparente, flexão estática, flexão dinâmica e dureza Janka.  A partir dos resultados obtidos neste estudo, pode-se perceber que a madeira de Dodonaea viscosa pode ser classificada como de alta densidade, possui bom desempenho nas propriedades mecânicas, como módulo de ruptura, módulo de elasticidade, dureza Janka e resistência ao impacto. Além disso, apresenta alto valor de cota dinâmica, caracterizando-a como uma madeira resiliente.


2022 ◽  
pp. 103688
Author(s):  
Marya Nawaz Malik ◽  
Ihsan ul-Haq ◽  
Humaira Fatima ◽  
Madiha Ahmad ◽  
Iffat Naz ◽  
...  

PLoS ONE ◽  
2021 ◽  
Vol 16 (11) ◽  
pp. e0260337
Author(s):  
Genzhu Wang ◽  
Guoyong Tang ◽  
Danbo Pang ◽  
Yuguo Liu ◽  
Long Wan ◽  
...  

Biomass and carbon (C) distribution are suggested as strategies of plant responses to resource stress. Understanding the distribution patterns of biomass and C is the key to vegetation restoration in fragile ecosystems, however, there is limited understanding of the intraspecific biomass and C distributions of shrubs resulting from plant interactions in karst areas. In this study, three vegetation restoration types, a Dodonaea viscosa monoculture (DM), a Eucalyptus maideni and D. viscosa mixed-species plantation (EDP) and a Pinus massoniana and D. viscosa mixed-species plantation (PDP), were selected to determine the effects of plant interactions on the variations in the C distributions of D. viscosa among the three vegetation restoration types following 7 years of restoration. The results showed that: (1) plant interactions decreased the leaf biomass fraction. The interaction of P. massoniana and D. viscosa decreased the branch biomass fraction and increased the stem and root biomass fraction, but not the interaction of E. maideni and D. viscosa. Plant interactions changed the C concentrations of stems and roots rather than those of leaves and branches. (2) Plant interactions affected the soil nutrients and forest characteristics significantly. Meanwhile, the biomass distribution was affected by soil total nitrogen, clumping index and gap fraction; the C concentrations were influenced by the leaf area index and soil total phosphorus. (3) The C storage proportions of all the components correlated significantly with the proportion of biomass. Our results suggested that both the biomass distribution and C concentration of D. viscosa were affected by plant interactions, however, the biomass fraction not the C concentration determines the C storage fraction characteristics for D. viscosa.


Author(s):  
V. Thamil Priya ◽  
Balasubramanian N. ◽  
Shanmugaiah V. ◽  
Sathishkumar P. ◽  
Kannan N.D. ◽  
...  

2021 ◽  
Vol 34 (2) ◽  
pp. 42-59
Author(s):  
Zainab F. H. Al-Musawi ◽  
Narjis H. M. Al-Saadi

Biosynthesis of silver nanoparticles (AgNPs) from plant extracts is considered one of the green chemistry methods, as this method is characterized by ease, fast and low cost to manipulate. Interestingly, AgNPs have an important role, especially in nano-medicine.  Using AgNPs for cancer therapy are an affordable way to control tumor growth and constitute a choice strategy to fight cancer cells. First type of conventional cancer treatment is surgical treatment then radiation and chemotherapy. However, these treatments may work for some cancer subtypes, and have various side effects, in most cases, with high doses. In this study, silver nanoparticles (AgNPs) were biosynthesized using Dodonaea viscosa leaves extract. The formation of these particles was confirmed through the color change, UV-Visible Spectrophotometer displaying at 463nm.While the particles characterization was done by Surface Plasmon Resonance (SPR) band and Fourier Transform Infra-Red (FT-IR) spectroscopy which revealed the effective functional groups that have ability to bio-reduction silver ion Ag+. In addition, X-ray diffraction (XRD) determined the crystal structure of silver nanoparticles, as shown by the peaks at 2θ values of 38.1874, 46.2491, 57.5409 and76. 8313ο.The atomic force microscopy (AFM) analysis showed the size and the surface properties of biosynthesized nanoparticles, and the silver nanoparticles had an average size of 60.22 nm. Finally, scanning electron microscopy (SEM) showed spherical shape of AgNPs and having different average diameter D1 (21.10), D2 (21.39) and D3 (11.86) nm. In vitro, the synthesized AgNPs exhibited potential anti-tumor activities against human lung cancer (A549) and ovarian cancer (SK-OV-3) carcinoma cell lines in a dose-dependent manner with IC50 of 1.73 and 2.23µg.ml-1, respectively. Our results showed the promising use of AgNPs as an alternative treatment for cancer cells directly and selectively on A549 cell line at concentrations (2.000, 1.699, 1.398 and 1.301 μg /mL).


INDIAN DRUGS ◽  
2021 ◽  
Vol 58 (08) ◽  
pp. 79-83
Author(s):  
Maisa R. Shoriqi ◽  
Salem S. Touby ◽  
Mohammad A. Hossain ◽  

Nowadays, effective medications as antioxidant agents are mandatory for a safe and sustainable environment. Dodonaea viscosa (D. viscosa) is used traditionally by the Omani people to treat rheumatism, toothaches, fever, cold, malaria, headaches, indigestion, ulcers, diarrhea, and constipation, dysmenorrheal and irregular menstruation. This study was carried out to prepare leaf extracts by different solvents and to determine their antioxidant activity and total phenols content. The selected plant was collected locally near the University Campus, Nizwa, Oman. The dried coarse powder was used for the extraction with methanol and it was defatted with water and successively partitioned with different polarity solvents with increasing solvent polarity. The total phenols content and antioxidant activity of the prepared different extracts were assessed by Folin-Ciocalteu reagent (FCR) and 2,2-diphenyl-1-picryl-hydrazyl (DPPH) methods. The total phenols content of different extracts was in the range of 3.02-249.93 mg gallic acid/g dry extract. The chloroform extract showed the maximum amount of total phenol compounds (249.93 mg GAE acid/g dry extract) and the minimum content was found in water extract (3.02 mg GAE acid/g dry extract). The leaf crude extracts were obtained to significant levels of antioxidant activity that ranged from percentage of inhibition from 33-85.92 %. The water extract and n-butanol extracts showed significant levels of antioxidant activity (85.92 % and 84.99 %) against the DPPH free radical method. In conclusion, this study showed that different polarities crude extracts of D. viscosa comprise a significant amount of phenols plus antioxidant properties and have possibilities of being potential use of the selected species for a natural source of antioxidants.


Plant Ecology ◽  
2021 ◽  
Vol 222 (11) ◽  
pp. 1209-1224
Author(s):  
Xuemei Wang ◽  
Bangguo Yan ◽  
Liangtao Shi ◽  
Gangcai Liu

Author(s):  
R. Ramkumar ◽  
S. K. Periyasamy ◽  
B. R. Venkatraman ◽  
K. G. Sekar

Background: The current investigation was done to assess the in vitro anticancer property of Dodonaea viscosa (D. viscosa) in three malignant growth cell lines and mitigating impact in RAW 264.7 macrophages. Methods: The hydroalcoholic remove D. viscosa was ready and tried against HCT-116 colon malignancy, MCF-7 bosom disease HeLa cervical disease cell lines. The cytotoxicity of concentrate was affirmed by MTT cheeky. The calming movement of concentrate was assessed utilizing LPS invigorated RAW 264.7 macrophages and the degree of incendiary middle people was estimated. Results: The anticancer impact of D. viscosa onHCT-116, MCF-7 and HeLa cell line with the IC50 worth of 60.43 ± 0.76 μg/ml,75.26 ± 0.45 μg/ml and 72.12 ± 0.87μg/ml individually. Further, in LPS stimulatedRAW264.7 macrophage cells, treatment with D. viscosa extract altogether decreased the raised level of NO, TNF-α and PGE2. Conclusion: This examination gave the proof to D. viscosa an anticancer and mitigating specialist. Further bioactive confinement and atomic examinations are needed to prove the impact of plant remove.


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