2023-01-012024-05-13https://scholars.lib.ntu.edu.tw/handle/123456789/653835稻米不論是經過預熟或發芽處理，都會提高它的營養價值，例如維生素、礦物質和GABA等。預熟是一種水熱加工程序，包含浸漬、蒸煮和乾燥三個步驟。發芽是一種種子生長的生理作用，包含浸漬、發芽和成長。相對於糙米來說，預熟糙米質地較硬且輾白整米率高，反之，發芽糙米則較軟而輾白整米率低。如果將預熟和發芽結合，可以改善彼此質地的優點，同時更可強化雙方的營養價值，生產出一個新的品—預熟發芽米。此外，在浸漬過程中如果加入一些營養物質，如礦物質，可以進一步強化產品的營養價值。在110和111年度的計畫，本團隊成功地開發出發芽預熟稉米的製程和分析相關的物理化學性質。本年度計畫主要分成兩個重點。首先，改善先前所開發出的預熟發芽米製程，於浸漬階段加入鐵、鋅等鹽類，藉以強化產品的礦物質含量，提升其營養價值。其次，將製備好的營養強化預熟發芽糙米，分別以乾磨和濕磨研製成糙米穀粉，探討其穀粉的物化性質及生理性質，藉以評估其應用性。期盼可以更完整的提出一個工業化生產預熟發芽米及其穀粉的工業化製程，作為產業發展的參考。計畫的完成，期能拓展國產稉米更多元的應用。 Whether the rice paddy is parboiled or germinated, its nutrients will be enhanced, such as vitamins, minerals and GABA. Parboiling is a hydrothermal treatment that includes three steps, soaking, steaming and drying. Germination is a physiological phenomenon of seed growth, including three periods of soaking, germination and growth. Compared with brown rice, parboiled brown rice has a harder texture and is resistant to cooking, while germinated brown rice has a weaker structure and resulted in lower-head rice yields. Through the combination of parboiling and germination the rice texture can be improved, and, at the same time, the nutritional values are enhanced. This new rice product is named parboiled-germinated rice (PGR). In addition, the nutritional values of PRG can be further enhanced if some nutrients, such as minerals, are added to the soaking water. In the 110 and 111 projects, our team successfully developed the process to prepare the PGR and analyzed the relevant physicochemical properties. The present project is mainly divided into two parts. Based on the previous results of the development of PGR, ferric and zinc ions are first added to the water during the soaking stage to fortify the mineral content of PGR. Secondly, the nutrient-enhanced PGR will be ground into brown rice flour through dry- and wet-milling, and the physicochemical and physiological properties of the rice flour are investigated to evaluate the applications in the foods. We look forward to proposing a more complete industrial production process for PGR and its flour to assist industrial development. Finally, the completion of this project is expected to expand the diversified application of domestic japonica rice.米穀粉;預熟米;發芽米;稉米;加工適性;rice flour; parboiled rice; germinated rice; japonica; processing evaluation