“…Nanoparticles’ features, such as small size, large surface area, biocompatibility, and targeting to specific sites, make them more suited for use in various biochemical functions. , Most studies used biologically derived raw materials (from algae, fungi, bacteria, and mammals) to synthesize organic or inorganic nanoparticles to treat infectious and noninfectious diseases due to their various benefits over chemically synthesized nanoparticles. − We synthesize two different kinds of metallic nanoparticles, such as silver (AgNPs) and gold (AuNPs), using microbial-derived products as raw materials, which have several advantages. According to a recent study, probiotics, particularly lactic acid bacteria (LAB), have drawn much interest from the food and pharmaceutical industries because of their many advantages for human health and well-being. − Several studies have shown that LAB provides biological protection against microbial infections. , As a result, it would be one of the novel approaches to using LAB as an environmentally friendly method of synthesizing biocompatible NPs that can be used to treat a wide variety of microbial infections. , Thus, in the current study, we sought to isolate and characterize the LAB strains from the Kimchi sample as a biological source for the synthesis of AuNPs and AgNPs. In addition, gas chromatography-mass spectroscopy was used to investigate the identified LAB strain C1 for the production of secondary metabolites to determine their various biological functions …”