Enhancing the Quality of Ginseng–Astragalus Medicinal Food Using Twin-Screw Extrusion

Twin-screw extrusion is a promising method to transform medicinal herbs into functional food ingredients. However, limited research has focused on the application of this tech- nique to ginseng–astragalus compounds. In this study, the response surface methodology (RSM) was used to optimize the extrusion process (screw speed, temperature, and mois- ture content). The optimal parameters (208 rpm, 128 ◦C, 29%) significantly increased ginsenoside, polysaccharide, phenolic content, and antioxidant...