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Blackberry-leaf silver nanoparticles against plant pathogens
Rubus fruticosus extract reduces Ag+ to 50–120 nm AgNPs (SPR 449 nm) that fully inhibit two phytopathogens at the highest dose.
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How were the AgNPs made?
Rubus fruticosus leaf extract mixed with AgNO3 and incubated 24 h at room temperature.
Source: Biogenic synthesis of silver nanoparticles using <i>Rubus fruticosus</i> extract and their antibacterial efficacy against <i>Erwinia caratovora</i> and <i>Ralstonia solanacearum</i> phytopathogens · DOI · quote verified
What UV-vis peak diagnoses the colloid?
Highest peak at 449 nm, in the usual 400–480 nm Ag SPR window.
Source: Biogenic synthesis of silver nanoparticles using <i>Rubus fruticosus</i> extract and their antibacterial efficacy against <i>Erwinia caratovora</i> and <i>Ralstonia solanacearum</i> phytopathogens · DOI · quote verified
How stable is that SPR?
Unchanged after four months of incubation.
Source: Biogenic synthesis of silver nanoparticles using <i>Rubus fruticosus</i> extract and their antibacterial efficacy against <i>Erwinia caratovora</i> and <i>Ralstonia solanacearum</i> phytopathogens · DOI · quote verified
What TEM size range is reported?
50 nm to 120 nm.
Source: Biogenic synthesis of silver nanoparticles using <i>Rubus fruticosus</i> extract and their antibacterial efficacy against <i>Erwinia caratovora</i> and <i>Ralstonia solanacearum</i> phytopathogens · DOI · quote verified
Which XRD peaks/planes are listed?
38.1°, 44.4°, 54.5°, 77.9° for (111), (200), (142), (311).
Source: Biogenic synthesis of silver nanoparticles using <i>Rubus fruticosus</i> extract and their antibacterial efficacy against <i>Erwinia caratovora</i> and <i>Ralstonia solanacearum</i> phytopathogens · DOI · quote verified
What Ag fraction does EDX give?
About 90%, with a strong 3 keV silver peak.
Source: Biogenic synthesis of silver nanoparticles using <i>Rubus fruticosus</i> extract and their antibacterial efficacy against <i>Erwinia caratovora</i> and <i>Ralstonia solanacearum</i> phytopathogens · DOI · quote verified
What inhibition is seen at the highest NP dose vs Ralstonia?
100% inhibition of the test microbe.
Source: Biogenic synthesis of silver nanoparticles using <i>Rubus fruticosus</i> extract and their antibacterial efficacy against <i>Erwinia caratovora</i> and <i>Ralstonia solanacearum</i> phytopathogens · DOI · quote verified
And versus Erwinia at T1?
The highest concentration of NPs inhibited bacterial growth completely.
Source: Biogenic synthesis of silver nanoparticles using <i>Rubus fruticosus</i> extract and their antibacterial efficacy against <i>Erwinia caratovora</i> and <i>Ralstonia solanacearum</i> phytopathogens · DOI · quote verified
How do NPs compare with extract at the lowest dose T10 vs Erwinia?
NPs and NPs+PE inhibit 40%; extract alone <20%.
Source: Biogenic synthesis of silver nanoparticles using <i>Rubus fruticosus</i> extract and their antibacterial efficacy against <i>Erwinia caratovora</i> and <i>Ralstonia solanacearum</i> phytopathogens · DOI · quote verified
How are particles isolated?
Centrifugation at 13 000 rpm for 15 minutes.
Source: Biogenic synthesis of silver nanoparticles using <i>Rubus fruticosus</i> extract and their antibacterial efficacy against <i>Erwinia caratovora</i> and <i>Ralstonia solanacearum</i> phytopathogens · DOI · quote verified
Typical AgNP SPR window cited?
400 to 480 nm.
Source: Biogenic synthesis of silver nanoparticles using <i>Rubus fruticosus</i> extract and their antibacterial efficacy against <i>Erwinia caratovora</i> and <i>Ralstonia solanacearum</i> phytopathogens · DOI · quote verified