Phenolics from natural sources can replace use of hazardous synthetic antioxidants.
Microbial fermentation is a powerful method for production/extraction of phenolics.
Phenolics are either produced by microorganisms or released from the substrate.
We reviewed production of antioxidant phenolics by SmF and SSF processes.
Antioxidant activity improvement of cereals & legumes by SSF is thoroughly discussed.