Impact of hydrothermal processing on the mineral, antinutritional, antioxidant and functional characteristics of proso millet (Panicum miliaceum)
摘要
This study explored the effects of several hydrothermal treatments such as steeping, blanching, steaming, roasting, and pressure cooking on proso millet grain. Both untreated and treated samples were analyzed for nutritional composition and mineral content. Anti-nutritional factors like tannin and phytic acid were also quantified illustrating 46.09% reduction in tannin levels and 31.94% in phytic acid levels after hydrothermal treatments. Antioxidant activity was assessed using various methods, such as 2,2-diphenyl-1-picrylhydrazyl (DPPH%), Total Phenolic Content (TPC), Total Flavonoid Content (TFC), and Ferric Reducing Antioxidant Power (FRAP) assays. The DPPH% and TFC content was enhanced 41.12% and 34.54%, respectively after the hydrothermal treatments. Additionally, the study evaluated the functional and pasting properties of the millet to assess its performance during processing and potential applications in food products. The findings highlight how hydrothermal treatments can optimize the nutritional profile and functional characteristics of proso millet, making it a valuable option for addressing dietary needs.