Evaluation of antimicrobial and antioxidant activity of essential oil of Trianthema decandra L.

Geethalakshmi, R.; Sarada, Dronamraju V. L.

doi:10.1016/j.jopr.2012.11.022

Cited by 16 publications

(17 citation statements)

References 31 publications

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“…22 The plant has various medicinal properties and has been reported to have antioxidant and antimicrobial properties. 23 In the present study, we describe the biosynthesis of gold and silver nanoparticles from aqueous root extract of T. decandra for the first time. Chloroauric acid and silver nitrate were reduced to metallic gold and metallic silver respectively, on reaction with root extract of T. decandra, resulting in synthesis of gold and silver nanoparticles.…”

Section: Introductionmentioning

confidence: 94%

Gold and silver nanoparticles from Trianthema decandra: synthesis, characterization, and antimicrobial properties

Geethalakshmi

Sarada²

2012

IJN

203

109

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Background:There is an increasing commercial demand for nanoparticles due to their wide applicability in various markets, including medicine, catalysis, electronics, chemistry, and energy. In this report, a simple and ecofriendly chemical reaction for the synthesis of gold and silver nanoparticles from Trianthema decandra (Aizoaceae) has been developed. Methods and results: On treatment of aqueous solutions containing chloroauric acid or silver nitrate with root extract of T. decandra, stable gold or silver nanoparticles were rapidly formed. The kinetics of reduction of gold and silver ions during the reaction was analyzed by ultraviolet-visible spectroscopy. Field emission-scanning electron microscopy showed formation of gold nanoparticles in various shapes, including spherical, cubical, triangular, and hexagonal, while silver nanoparticles were spherical. The size of the gold nanoparticles was 33-65 nm and that of the silver nanoparticles was 36-74 nm. Energy dispersive x-ray and Fourier transform infrared spectroscopy confirmed the presence of metallic gold and metallic silver in the respective nanoparticles. The antimicrobial properties of the synthesized nanoparticles were analyzed using the Kirby-Bauer method. The results show varied susceptibility of microorganisms to the gold and silver nanoparticles. Conclusion: It is believed that phytochemicals present in T. decandra extract reduce the silver and gold ions into metallic nanoparticles. This strategy reduces the cost of production and the environmental impact. The silver and gold nanoparticles formed showed strong activity against all microorganisms tested.

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Section: Introductionmentioning

confidence: 94%

Gold and silver nanoparticles from Trianthema decandra: synthesis, characterization, and antimicrobial properties

Geethalakshmi

Sarada²

2012

IJN

203

109

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“…Many plants are used as medicines because of their antimicrobial nature, which are due to compounds synthesized in the secondary metabolism of the plant. These products are known by their active substances (Geethalakshmi et al, 2010).The present study investigated the antimicrobial activity of A. squamosa the methanol and acetone exhibited statistically insignificant activity against the all tested bacterial strains. Hexane and petroleum ether extracts exhibited statistically significant antimicrobial activity against all bacterial strains.…”

Section: Discussionmentioning

confidence: 84%

Screening of biological actives extracts from Annona squamosa

Babu¹,

Devi²,

Kombiah³

2013

International Journal of Biological Research

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The aim of the present study is to focus on the cytotoxicity and antimicrobial activities from Annona squamosa plant seed extracts. The plant A. squamosa seed was extracted with various solvents like chloroform, methanol, hexane, petroleum ether and acetone. The antimicrobial activities of all these extracts were determined by disc diffusion method against Pseudomonas aeruginosa, Proteius vulgaries, Staphylococcus aureus and Escherichia coli pathogens. Methanol, hexane and acetone extracts of A. squamosa showed highest antimicrobial activity against all pathogens. Cytotoxic activity of A. squamosa seed extract was tested using Artemia salina (Brine shrimp) bioassay. In cytotoxicity study, extract caused 86% mortality of Brine shrimp larvae after 24 h at a concentration of 500 µg/mL.

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“…Plant products are shown to possess good therapeutic potential as anti-inflammatory agents and graduate wound healing, due to the presence of active terpenes, steroids, alkaloids and flavanoids 22 . The cardiac glycosides exhibited antioxidant and antimicrobial properties in various plant studies 23, 24. Steroids have anti-bacterial and antioxidant potential 25,26 . Antioxidant activity favours the regeneration of wounds, because the production of reactive oxygen species during the process of tissue injury aggravates the disorders in the tissue.…”

Section: Resultsmentioning

confidence: 99%

Untitled

2014

IJPSR

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ABSTRACT:The chloroform extracts of S. asoca bark were studied for the wound healing potential. The wound healing activity of S. asoca bark by excision, incision and dead space wound models in albino Wistar rats and antioxidant profile of this bark extract were also studied as there is an increase in the levels of free radicals during the damage of tissue. The parameters like wound contraction, period of epithelialisation, tensile strength and hydroxyproline content were evaluated in three wound models, namely; excision, incision and dead space wound models. Besides, their influences on oxidative stress in three wound models were also estimated. The results obtained were compared with standard drug nitrofurazone and control in terms of wound contraction, period of epithelialisation, tensile strength and hydroxyproline content. The chloroform extract of S. asoca bark showed significant results in all models when compared to standard and control. A subservient study made on the levels of superoxidedismutase, catalase, glutathione, vitamin C and lipid peroxidation are recorded and a significant increase in the levels of these antioxidant enzymes and decrease in the levels of lipid peroxidation was observed. The histopathological studies have shown the well-formed dermis with minimal inflammatory cells. Increased wound contraction, collagen migration, granulation tissue formation is attributed to the phytochemical constituents present in this plant extract. Increased levels of antioxidants favour the regeneration of wounds by quenching free radicals. Phytochemical constituents present in S. asoca may be responsible for the wound healing activity.

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Evaluation of antimicrobial and antioxidant activity of essential oil of Trianthema decandra L.

Cited by 16 publications

References 31 publications

Gold and silver nanoparticles from Trianthema decandra: synthesis, characterization, and antimicrobial properties

Gold and silver nanoparticles from Trianthema decandra: synthesis, characterization, and antimicrobial properties

Screening of biological actives extracts from Annona squamosa

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