Fig. 9
Free radical scavenging of AgNCs in MRSB and WBM compared to ascorbic acid A The free radical scavenging activity is expressed as a percentage of the ascorbic acid content of AgNCs and is represented as an equivalent of ascorbic acid according to the DPPH reducing assay. B Percentage of DPPH reduction using AgNCs. C EC50 concentrations (µg/mL) of D the antiradical power of AgNCs from Lactobacillus strains in MRSB and WBM compared to that of ascorbic acid. ASC: Ascorbic acid concentration as a positive control Whey-del-AgNCs: Synthesized using Lb delbrueckii grown in whey medium with an initial concentration of 4 mmol AgNO3 MRS-del-AgNCs: Synthesized using Lb delbrueckii grown in MRS broth medium with an initial concentration of 4 mmol AgNO3 Whey-ac-AgNCs: Synthesized using Lb acidophilus grown in whey medium with an initial concentration of 4 mmol AgNO3 MRS-ac-AgNCs: Synthesized using L. acidophilus grown in MRS broth medium with an initial concentration of 4 mmol AgNO3