Isolation and characterisation of methanol-soluble fraction of <i>Alternanthera philoxeroides</i> (Mart.) – evaluation of their antioxidant, α-glucosidase inhibitory and antimicrobial activity in <i>in vitro</i> systems

Bhattacherjee, Abhishek; Ghosh, Tanushree; Sil, Rajarshi; Datta, Abhijit

doi:10.1080/14786419.2014.930857

Cited by 20 publications

(33 citation statements)

References 5 publications

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“…The synthetic allelopathic index (SE) was calculated as the average of RI (-1 < RI < 1) [23]. A positive value (+) indicates stimulation by the treatment and a negative value (-) indicates inhibition by the treatment (with zero indicating no significant difference from the control) [24].…”

Section: Effects Of Extracts On the Biomass And Enzymementioning

confidence: 99%

Allelopathic Effects of Aqueous Extracts of Alternanthera philoxeroides on the Growth of Zoysia matrella

Huang¹,

YanYan²,

Wang³

et al. 2017

Pol. J. Environ. Stud.

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Alternanthera philoxeroides is a perennial invasive species worldwide which can greatly affect native ecosystems and agricultural production. Our research studied the allelopathic effects of aqueous extracts of A. philoxeroides on the growth and antioxidant enzyme activities of Zoysia matrella, and isolated and analyzed the dominant allelochemicals in root extracts of A. philoxeroides. The overall allelopathic effects of A. philoxeroides extracts on the growth and antioxidant enzyme activities of Z. matrella were found to be slightly stimulatory (concentrations ≤10 g L -1) and highly inhibitory (≥40 g L -1). Malondialdehyde contents were significantly enhanced with increasing concentrations of A. philoxeroides extracts. The strength of the allelopathic effects of three extracts of A. philoxeroides on Z. matrella followed the order: roots > leaves > stems. The dominant substance was extracted and identified to be ethyl propionate by gas chromatographymass spectrometry (GC-MS). Pot experiment results show that the effects of ethyl propionate on growth and enzyme activities of Z. matrella also ranged from slightly stimulating to highly inhibiting in a similar fashion to the effects of A. philoxeroide extracts on Z. matrella. The overall allelopathic effects of A. philoxeroides on Z. matrella ranged from slightly stimulating to highly inhibiting. The most abundant allelochemical component of root extracts was identified as ethyl propionate, which also exhibited inhibitory effects similar to A. philoxeroides extracts on Z. matrella.

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Section: Effects Of Extracts On the Biomass And Enzymementioning

confidence: 99%

Allelopathic Effects of Aqueous Extracts of Alternanthera philoxeroides on the Growth of Zoysia matrella

Huang¹,

YanYan²,

Wang³

et al. 2017

Pol. J. Environ. Stud.

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“…Plants were verified with their taxonomic classification and their herbarium specimens were also prepared. Specimen data is available in our previous article [21]. Leaves were detached and dried in oven at 60 C for 30 min.…”

Section: Preparation Of Leaf Extractmentioning

confidence: 99%

“…The weed is commonly known as alligator weed and found on the upper surface of water (lake or pond). In our previous study we have thoroughly characterised the methanol soluble fraction of A. philoxeroides leaves [21]. We have reported the presence of five major phenolics viz.…”

Section: Introductionmentioning

confidence: 99%

“…We have reported the presence of five major phenolics viz. kaempferol, ferulic acid, salicylic acid, syringic acid, chlorogenic acid, one monoterpene (safrole) and one phenylpropane (myrcene) in the methanol soluble fraction called fraction-X [21]. These purified methanolic fractions also possess antimicrobial, antioxidant and as well as a-glucosidase inhibitory activities [21].…”

Section: Introductionmentioning

confidence: 99%

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Green synthesis and characterisation of antioxidant-tagged gold nanoparticle (X-GNP) and studies on its potent antimicrobial activity

Bhattacherjee

Ghosh

Datta

2017

Journal of Experimental Nanoscience

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Alternanthera philoxeroides (Mart.), a weed, mainly from tropical origin and easily available worldwide. People used to eat it as a food mainly in South Africa. In our previous report we have thoroughly characterise several important phenolics, monoterpene and phenylpropane from methanol soluble fraction of Alternenthera leaves (fraction X) and also reported their a-glucosidase inhibitory, antimicrobial and antioxidant activities. All these isolated natural compounds are well characterised and widely studied. In our present study we try to use this beneficial fraction (named fraction X) in green synthesis of gold nanoparticles (X-GNP). We also try to explore the beneficial aspects of green synthesis in comparison with commonly used chemical synthesis method (GNP) in context with their antimicrobial activity. UV/Vis spectroscopy, DLS, Zeta potential, FT-IR, EDAX and other microscopic techniques namely: SEM, AFM were used to characterise the synthesised nanoparticles. Different important microbial strains were used to evaluate the antimicrobial activity of prepared nanoparticles. Overall the studies suggest successful synthesis of green nanoparticles (X-GNP) and also showed the improvement in antimicrobial activity of X-GNP nanoparticles.

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“…Due to its prevalence, it shades the aquatic vegetation from sunlight and reduces water flow (Buckingham 1996). Alligator weed can also cause the death of fish and native plants and provides a favorable habitat for mosquitoes (Bhattacherjee et al 2014). The control and elimination of AP includes biological (Sun et al 2010;Wei et al 2015), chemical, and physical methods (Schooler et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Activated Carbon Prepared from Alternanthera philoxeroides Biomass by One-step K2CO3 Activation

Chen

Dou

2017

BioResources

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Activated carbons (ACs) were prepared from Alternanthera philoxeroides (AP) by K2CO3 one-step mixing activation. The effects of the mixing mass ratio of K2CO3 to AP, activation temperature, N2 flow rate, and period on the yield and specific surface area of ACs were investigated. The results showed that the surface area and pore volume of ACs were closely related to activation conditions and that the activation temperature was the main factor influencing the surface area and pore volume. The activation conditions only had a slight effect on the yield of ACs, which varied between 13.5% and 19.5%. The surface area of 1799.8 m 2 /g was obtained at a K2CO3 to AP mass ratio of 2:1, activation temperature of 900 °C, activation time of 2 h, and N2 flow rate of 60 cm 3 /min. The surface morphology of ACs were characterized with scanning electron microscopy (SEM), and the recovered K2CO3 was characterized with powder X-ray diffractometry (XRD). The SEM images of the ACs also showed that the activation temperature had an obvious effect on the porous structure.

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Isolation and characterisation of methanol-soluble fraction of Alternanthera philoxeroides (Mart.) – evaluation of their antioxidant, α-glucosidase inhibitory and antimicrobial activity in in vitro systems

Cited by 20 publications

References 5 publications

Allelopathic Effects of Aqueous Extracts of Alternanthera philoxeroides on the Growth of Zoysia matrella

Allelopathic Effects of Aqueous Extracts of Alternanthera philoxeroides on the Growth of Zoysia matrella

Green synthesis and characterisation of antioxidant-tagged gold nanoparticle (X-GNP) and studies on its potent antimicrobial activity

Activated Carbon Prepared from Alternanthera philoxeroides Biomass by One-step K2CO3 Activation

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