158
S. Sahithya and C. Krishnaveni
Fig. 1 FTIR analysis of the ethanol extract
N–S Stretching, band at 703.08 corresponds to C–C Deformation and the band at
400.25 corresponds to S–S Stretching (Fig. 1) (Thakur et al. 2014).
3.3 Anti-bacterial Activity
The anti-bacterial activity of the Acetone, Ethanol and Dist. water extracts of Prosopis
juliflora was tested against bacteria such as Bacillus subtilis and Pseudomonas putida.
Acetone extract showed good anti-bacterial activity against both the organisms tested
than ethanol and dist. water extracts. The zone of inhibition was higher against
Pseudomonas putida. The inhibitory effect increased with increase in concentration
of the extract. The positive control Streptomycin showed the inhibitory effect against
the bacteria (Patil et al. 2012). The measured results of the Zone of inhibition are
given in the Table 1.
3.4 Dye Degradation
Photocatalytic degradation of methylene blue was carried out by using Prosopis
juliflora leaf extract silver nanoparticles under solar light. Dye degradation was identified by color change (also measured via spectrophotometer at 660 nm). Initially,
the color of dye (blue color) changed after 1 h of exposure to sunlight with silver
nanoparticles and the intensity decreased with prolonged exposure to light. Finally,
S. Sahithya and C. Krishnaveni
Fig. 1 FTIR analysis of the ethanol extract
N–S Stretching, band at 703.08 corresponds to C–C Deformation and the band at
400.25 corresponds to S–S Stretching (Fig. 1) (Thakur et al. 2014).
3.3 Anti-bacterial Activity
The anti-bacterial activity of the Acetone, Ethanol and Dist. water extracts of Prosopis
juliflora was tested against bacteria such as Bacillus subtilis and Pseudomonas putida.
Acetone extract showed good anti-bacterial activity against both the organisms tested
than ethanol and dist. water extracts. The zone of inhibition was higher against
Pseudomonas putida. The inhibitory effect increased with increase in concentration
of the extract. The positive control Streptomycin showed the inhibitory effect against
the bacteria (Patil et al. 2012). The measured results of the Zone of inhibition are
given in the Table 1.
3.4 Dye Degradation
Photocatalytic degradation of methylene blue was carried out by using Prosopis
juliflora leaf extract silver nanoparticles under solar light. Dye degradation was identified by color change (also measured via spectrophotometer at 660 nm). Initially,
the color of dye (blue color) changed after 1 h of exposure to sunlight with silver
nanoparticles and the intensity decreased with prolonged exposure to light. Finally,