Chicory, as a food with the same origin of food and medicine, has great development potential.Using the extract of chicory leaves as a reducing agent and a stabilizer, a silver nano-bacteriostatic agent was synthesized by one-step method, which provided a new way for the development and utilization of chicory leaves.The effects of AgNO3/Cichorium intybus extract volume ratio, pH and reaction time on the preparation of silver nanoparticles were investigated by single factor experiment.The optimized product was characterized and identified by UV-vis absorption spectrum, transmission electron microscopy, and X-ray diffraction analysis.Results showed that there was an obvious absorption peak at 426 nm, the silver nanoparticles were spherical, the average particle size was 11.22 nm, and had good dispersion, it was face-centered cubic crystal.The anti-oxidation experiment showed that the biosynthetic silver nanoparticles had higher DPPH free radical scavenging activity than the original extract of cichorium intybus leaves.The IC50 value of AgNPs was 0.053 mg/mL.The reaction rate constant of 4-nitrophenol could reach 0.119 8 min-1, methyl orange (0.189 min-1), rhodamine B (0.567 min-1), and methylene blue (0.098 6 min-1), nano-silver synthesized from chicory leaf extract had a certain antioxidant and catalytic activity and was expected to be widely used in clinical and organic wastewater treatment.
CHENG Tiyan
,
ZHANG Zhen
. Characterization and bioactivity of green synthesis nano-silver from chicory leaf extract[J]. Food and Fermentation Industries, 2024
, 50(15)
: 119
-125
.
DOI: 10.13995/j.cnki.11-1802/ts.036575
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