ISOLATION AND CHARACTERIZATION OF NATURAL HERBICIDAL COMPOUND FROM Drechslera rostrata

Akbar, Muhammad; Iqbal, Mohammad S.; Khalil, Tayyaba

doi:10.1590/s0100-83582017350100056

Cited by 4 publications

(3 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The resulting fractionated extracts were evaporated under vacuum as in case of methanolic extract to get solvent free fractionated extracts. This procedure was done in order to fractionate secondary metabolites contained in the methanolic extracts of A. viridis leaf, seed, shoot and root (Akbar et al, 2017).…”

Section: Extraction From Plant Materialsmentioning

confidence: 99%

Antibacterial and Antioxidant Activities of Slender Amaranth Weed

et al. 2020

Self Cite

View full text Add to dashboard Cite

In the present study, antibacterial and antioxidant [1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity] activities of a weed, slender amaranth (Amaranthus viridis L.) were investigated. Extracts of different plant parts were prepared in n-hexane, chloroform and ethyl acetate. Antibacterial activity was measured by using 100 mg mL-1 concentration extracts against 4 deadly phytopathogenic bacterial species viz. Pseudomonas syringae Van Hall, Ralstonia solanacearum Smith, Erwinia carotovora (Jones), Holland and Xanthomonas axonopodis Hasse. In antioxidants assays, 10, 20 and 30 mg mL-1 extracts were used keeping DPPH as control. In these bioassays, ethyl acetate fraction of A. viridis leaf exhibited the best antibacterial and antioxidants activity. Ethyl acetate leaf fraction showed the highest inhibition zone diameter (IZD) where it caused 21 mm IZD against P. syringae and 19 mm IZD against E. carotovora. This extract also showed 22, 52 and 84% antioxidant activity at 10, 20 and 30 mg mL-1 concentrations, respectively. Previously there is no report available that describes antibacterial activity of root extract of A. viridis against P. syringae. Moreover, antioxidant activity of stem and root extracts in n-hexane, chloroform and ethyl acetate was investigated first time in the world. It was concluded that the biological activities observed during the present investigation may be due to the presence of bioactive constituents that can be harnessed as natural antibacterials and antioxidants.

show abstract

Section: Extraction From Plant Materialsmentioning

confidence: 99%

Antibacterial and Antioxidant Activities of Slender Amaranth Weed

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…The resulting fractionated metabolites were evaporated under vacuum as in case of methanolic extract to get solvent free fractionated metabolites. This procedure was done in order to fractionate secondary metabolites in the methanolic extracts of A. viridis leaves (Akbar et al, 2014(Akbar et al, , 2017.…”

Section: Plant Description and Extraction Of Metabolitesmentioning

confidence: 99%

Identification of antifungal compounds from slender amaranth

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Organic solvents were evaporated under vacuum in rotary evaporator as above to obtain organic solvent extracts. Resulting extracts were stored at 4 °C for further use (Akbar et al, 2017).…”

Section: Preparations Of Mushroom Extractsmentioning

confidence: 99%

Identification of Natural Antifungal Constituents From Agaricus Bisporus (J. E. Lange) Imbach

Waqas¹,

Akbar²,

Khalil³

et al. 2018

Appl. Ecol. Env. Res.

View full text Add to dashboard Cite

In agriculture, fungal invasions cause heavy loss and affect food security and food safety. Chemical pesticides are available to control these pathogens but these are associated with environmental and public health concerns. In recent years, there is a growing trend towards nature friendly methods of pathogen control. Use of allelochemicals from mushrooms is a promising field. In the present study, antifungal activity of an edible mushroom, Agaricus bisporus was investigated. For this purpose, different organic solvent extracts of A. bisporus, were evaluated against plant pathogenic fungal species viz. Macrophomina phaseolina, Aspergillus flavus, Fusarium oxysporum, Drechslera australiensis and Alternaria alternata. To check the antifungal activity of A. bisporus, serial dilution method was used. Six levels of treatments of each n-hexane, chloroform and ethyl acetate (0, 5, 10, 15, 20 and 25 mg/ml) were applied against all fungal species. Generally, all organic solvent extracts reduced the fungal biomass significantly with the increase in concentration but, ethyl acetate fraction exhibited better results and reduced the fungal growth in some species up to 50% in D. australiensis and 44% each in A. alternata and F. oxysporum. From Gas Chromatography Mass Spectrometry (GCMS) analysis of ethyl acetate fraction, 10 compounds were identified. Out of these 10 compounds, only one compound [1,2-Benzenedicarboxylic acid, mono (2-ethylhexyl) ester], molecular formula = C16H22O4 and molecular weight = 278, showed 91.31% peak value. It was concluded that this compound being in the highest concentration in the ethyl acetate fraction of A. bisporus mushroom was responsible for its antifungal activity, recorded in the present study. The present investigation concluded that A. bisporus has bioactive compounds that can be exploited to develop ecofriendly fungicides against a number of plant pathogens.

show abstract

ISOLATION AND CHARACTERIZATION OF NATURAL HERBICIDAL COMPOUND FROM Drechslera rostrata

Cited by 4 publications

References 22 publications

Antibacterial and Antioxidant Activities of Slender Amaranth Weed

Antibacterial and Antioxidant Activities of Slender Amaranth Weed

Identification of antifungal compounds from slender amaranth

Identification of Natural Antifungal Constituents From Agaricus Bisporus (J. E. Lange) Imbach

Contact Info

Product

Resources

About